The number of bookshelves needed if each bookshelves contain 5 books is 10.
How to find the number of shelves will hold the books?She has 47 books. . She wants to put them all on bookshelves.
Therefore, the number of bookshelves she will need if each shelf holds 5 books can be calculated as follows:
The total number of books she has in her possession is 47 books.
All the books must have a place in the bookshelves.
Each bookshelves can only contain 5 books.
Hence,
let
x = number of bookshelves
Therefore, the equation to find the number of bookshelves is as follows:
5x = 47
divide both sides by 5
x = 47 / 5
x = 9.4
Therefore, Shiloh will require 10 book shelves.
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A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and test 42 tablets, then accept the whole batch if there is only one or none that doesn't meet the required specifications. If one shipment of 3000 aspirin tablets actually has a 6% rate of defects, what is the probability that this whole shipment will be accepted? Will almost all such shipments be accepted, or will many be rejected?
The probability that the entire cargo will be approved is 0.078 = 7.8% using the Binomial probability distribution, while 92.2% will be refused. As a result, many will be rejected.
By Binomial probability distribution,
P(X = x) = [tex]C_{n,x}[/tex] × [tex]p^{x}[/tex] × [tex](1-p)^{n-x}[/tex]
[tex]C_{n,x}[/tex] , various combinations of x items from a collection of n elements given by,
[tex]C_{n,x}[/tex] = n! ÷ x! (n - x)!
n=42, as 42 tablets are tested.
p=0.06 as 6% is defective.
If at most there is 1 defective piece then it will be accepted.
Therefore,
P(X ≤ 1) = P(X = 0) + P(X = 1)
P(X = x) = [tex]C_{n,x}[/tex] × [tex]p^{x}[/tex] × [tex](1-p)^{n-x}[/tex]
P(X = 0) = [tex]C_{42,0}[/tex] × [tex](0.06)^{0}[/tex] × [tex](0.94)^{42}[/tex] = 0.074
P(X = 1) = [tex]C_{42,1}[/tex] × [tex](0.06)^{1}[/tex] × [tex](0.94)^{41}[/tex] = 0.0047
Thus,
P(X ≤ 1) = P(X = 0) + P(X = 1)
P(X ≤ 1) = 0.074 + 0.0047
P(X ≤ 1) = 0.0787
The probability that the entire shipment will be approved is 0.078 = 7.8%, while 92.2% will be refused.
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one step equations b+0.25=1.15
You will need to make b the subject of the formula:
This you do by subtracting 0.25 from both sides of the equation:
b + 0.25 = 1.15 becomes:
[tex]\begin{gathered} b+0.25-0.25=1.15-0.25\text{ which turns to become:} \\ b=1.15-0.25 \\ b=0.9 \end{gathered}[/tex]Function g is a transformation of the parent function f(x) = x2. The graph of fis reflected across the x-axis, and then translated left 4 units anddown 2 units to form the graph of gWrite the equation for g in the form y = ax2 + bx + cO A. y = -x2 + 8x + 14O B. y = -x2 - 8x - 18O C. y = x2 - 8x + 18O D. y = -x2 - 8x + 14
The parent function is given as:
f(x) = x²
y = x²
The graph is reflected across the x - axis
The x axis remains the same but the y axis is negated
g(x) = -x²
It is translated 4 units left
The function g(x) becomes
g(x) = -(x - 4)²
It is the translated 2 units down
g(x) = -(x - 4)² - 2
Simplifying the above equation:
g(x) = - (x² - 8x + 16) - 2
g(x) = -x² + 8x - 16 - 2
g(x) = -x² + 8x - 18
A manufacturer knows that their items have a lengths that are skewed right, with a mean of 17.6 inches, andstandard deviation of 3.3 inches.If 37 items are chosen at random, what is the probability that their mean length is greater than 18.9 inches?(Round answer to four decimal places)Question Help: D VideoSubmit Question
The probability is 0.9999
Explanation:Given that the mean is 17.6 inches
standard deviation is 3.3/37 = 0.089
We have:
z(18.9)
[tex]z=\frac{x-\mu}{\sigma}[/tex][tex]\frac{18.9-17.6}{0.089}=14.6067[/tex]Now, we have
P(x > 18.9) = P(z > 14.6067)
= 0.9999
z(0.394) = 0.6532
what is the derivative of sqrt(9x^2-1)
Answer:
900
Step-by-step explanation:
because I know answer
A bird is flying above a tree. You are standing 40 feet away from the tree. The angle of elevation to the top of the tree is 32°, and the angle of elevation to the bird is 42°. What is the distance from the bird to the top of the tree?
A bird is flying above a tree. You are standing 40 feet away from the tree. The angle of elevation to the top of the tree is 32°, and the angle of elevation to the bird is 42°. What is the distance from the bird to the top of the tree?
Let
A -----> you
B-----> a bird
C-----> top of the tree
see the following image
step 1
In the right triangle ABD
tan(42)=BD/AD
substitute given values
tan(42)=BD/40
BD=40*tan(42)
BD=36 ft
step 2
In the right triangle ACD
tan(32)=CD/AD
CD=AD*tan(32)
CD=40*tan(32)
CD=25 ft
step 3
Find the difference BD-CD
36-25=11 ft
therefore
the answer is 11 ftGiven a pair of points on each line. use the slope formula to determine whether AB and CD are para el perpendicular, or neither. GH: G(14, 13) and H(-11,0) RS: R(-3, 7) and S(-4,-5)
1) Picking points G( 14,13) , H (-11, 0) and R(-3,7) , S(-4,-5) let's find their slopes using the slope formula
And R(-3,7) , S(-4,-5)
Since the condition to be parallel is share the same slope, and to be perpendicular one line must have the reciprocal and opposite slope in comparison to the first one. We can state that neither that line is parallel nor perpendicular.
3) So the answer is GH is not parallel nor perpendicular.
On a recent trip, Carol's car used 7/8 of a tank of gasoline. Which decimal and percentrepresents this amount?
The fraction of gasoline used is:
[tex]\frac{7}{8}[/tex]We need to convert this fraction to decimal and to percentage to find the answer.
Converting 7/8 to decimal:
For this we have to do the division between 7 and 8:
Thus, the decimal form of 7/8 is 0.875
Converting 7/8 to percentage:
we use the result that we previously get of 7/8 as a decimal: 0.875, and to convert it to percentage we multiply it by 100:
[tex]0.875\times100=87.5[/tex]7/8 to percentage is equal to 87.5%
Answer: 0.875 and 87.5%
MATHEMATICAL PHRASES_____5. the quatient of y and seven is eight_____6. thrice a number is eighteen_____7. the sum of twice a number and five is nine_____8. a number decreased by seven is twenty-eight
Explanation
Part A: The quotient of y and seven is eight.
Answer: y/7 =8
Part B: Thrice a number is eighteen
Answer: 3x = 18
Part C: The sum of twice a number and five is nine
Answer: 2x+5 =9
Part D: A number decreased by seven is twenty- eight
Answer: x-7 =28
Type the correct answer in type the answer in the box.Consider functions fand g.f(x)=(x+1)^3g(x) = 3sqrtx + 1Evaluate the function composition.(fg)(-64) = _
f(x) = (x + 1)^3
g(x) = cubic root x + 1
f(g)(x) =
[tex]\begin{gathered} f(g(x))\text{ = (3}\sqrt[]{x}+2)^3 \\ f(g(x))\text{ = x + 6(3}\sqrt[]{x})^2\text{ + 12(3}\sqrt[]{x})\text{ + 8} \\ f(g(-64))\text{ = -64 + 6(3}\sqrt[]{-64})^2\text{ + 12(3}\sqrt[]{-64})\text{ + 8} \\ f(g(-64))\text{ = -64 + 6(16) - 48 + 8} \\ f(g(-64))\text{ = -64 + 96 - 48 + 8} \\ f(g(-64))\text{ = 104 - 112} \\ f(g(-64))\text{ = -8} \end{gathered}[/tex]result
f(g(-64)) = -8
can somebody please help me with this question
Answer:
U'(12, 15)
Step-by-step explanation:
Given point U(4, 5) is part of figure STUVW that is dilated by a factor of 3 about the origin, you want the coordinates of U'.
DilationDilation about the origin multiplies each coordinate value by the scale factor:
U' = 3U
U' = 3(4, 5) = (12, 15)
The coordinates of U' are (12, 15).
What is the measure of a?
In the figure below, C D bisects ∠A C B
AB=B C
∠ B E C=90° and
∠D C E=42°
Find the measure of ∠A
The measure of "a" in the above-given right-angled triangle is 32°
What is a triangle?Note that a triangle is a three-sided polygon that is sometimes (but not always) referred to as the trigon. Every triangle has three sides and three angles, which may or may not be the same.
Key properties of a right-angled triangle to note are:
One angle is always 90° or a right angle.The side opposite angle of 90° is the hypotenuse.The hypotenuse is always the longest side.The sum of the other two interior angles is equal to 90°.The other two sides adjacent to the right angle are called base and perpendicular.The Sum of all three interior angles is equal to 180°To solve for "a" recall the following. It is given that:
AB = BC
∠BEC=90°
∠DCE=42°
Because CD bisects ∠ACB, Hence,
∠ACD = ∠DCB = x.............................1
∠DCE= ∠BCE + ∠DCB .....................2
= ∠BCE + x = 42° ................................3
To find ∠A, we use deductive reasoning to state:
∠A +∠E +∠ACD + ∠DCB + ∠BCE = 180° (Sum of Interior Angles)
Recall equation 1 hence, replacing ∠ACD with ∠DCB we have:
∠A +∠E +∠DCB + ∠DCB + ∠BCE = 180°
Recall equation 2, where ∠DCB = x, hence
∠A +∠E +x + x + ∠BCE = 180°
Recall equation three where 3 where ∠BCE + x = 42°, hence
∠A +∠E +x + (x + ∠BCE) = 180°
⇒ ∠A +∠E + x + 42° = 180°
Recall that ∠E = 90° so
⇒ ∠A +90° + x + 42° = 180° (Collect like terms)
⇒ ∠A + x = 180° - 90° - 42° = 48°; Hence
∠A + x = 48°...........................4
Recall that in Δ ABC
AB = BC (given)
Hence, ABC is an Isosceles triangle. Since this is true, then
⇒ ∠A = ∠ACB = 2x ...........................5 (Two angles opposite the equal sides are equal)
Substituting 2x in equation 5 into equation 4, we have
2x + x = 48°
3x = 48
x = 48/3
x = 16°
Recall that
∠A = 2x...........equation 5, hence,
∠A = 2 * 16
∠A = 32°
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A model of Spaceship Earth, a major tourist attraction at Epcot Center in Florida, is a sphere whose diameter is approximately 5 inches.The volume of the model sphere is approximately ___ cubic inches.Use 3.14 for pi. Round only your final answer to the nearest hundredth.
The Volume of the model sphere is given as
[tex]V_{\text{sphere}}=\frac{4}{3}\pi r^3[/tex]Given that the diameter is 5inches, the radius will be
[tex]\begin{gathered} \text{diameter,d}=2\times radius \\ r=\frac{d}{2}=\frac{5}{2}\text{inches} \\ r=2.5\text{inches} \end{gathered}[/tex]substituting r in the formula will give
[tex]\begin{gathered} V_{\text{sphere}}=\frac{4}{3}\times3.14\times(2.5)^3 \\ =\frac{4}{3}\times3.14\times76.765625 \\ =\frac{964.17625}{3} \\ =321.3922\text{cubic inches} \end{gathered}[/tex][tex]V_{\text{sphere}}=321.39\text{cubic inches}[/tex]Hence, the volume of the model sphere is approximately 321.39 cubic inches
The line of best fit is given as y = 9 - 3x. Find the value of y when x = -3.091827
Solution
We are given the equation
[tex]y=9-3x[/tex]We want to find y when x = -3. We only need to put x = -3
[tex]\begin{gathered} y=9-3x \\ y=9-3(-3) \\ y=9+9 \\ y=18 \end{gathered}[/tex]Therefore, the answer is
[tex]\begin{equation*} 18 \end{equation*}[/tex]dentashboard/home
Town policy requires that a certain number of trees be planted for every tree that is cut down.
For example, if 8 trees are cut down, 48 trees will be planted. A homeowner is going to cut down
5 trees on his property.
Solve Problems with Ratios and Unit Rates-Instruction-Level F
How many trees will be planted when 5 are cut down?
Trees Planted
Trees Cut Down
48
8
5
This can be solved using ratio and proportions.
What is ratio?
A ratio in mathematics illustrates how many times one number contains another. For example, if a dish of fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six (that is, 8:6, which is equivalent to the ratio 4:3). Similarly, the proportion of lemons to oranges is 6:8 (or 3:4), while the proportion of oranges to overall fruit is 8:14. (or 4:7). A ratio's numbers can be any quantity, such as a count of persons or things, or measures of lengths, weights, time, and so forth. In most situations, both numbers must be positive. A ratio in mathematics illustrates how many times one number contains another.
First, we find the ratio of trees planted to trees cut
= 48/8 = 6
So, no. of trees to be planted when 5 trees are cut = 5x6 = 30
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Find all X such that -13 < 5x - 3 ≤ 17.
Answer:
-5 < x < 17/5
Step-by-step explanation:
add three onto all sides -10 < 5x < 17
then divide all sides by -5 < x < 17/5
(4b) If you know that you can drive 230 miles withthat much gas, how many miles per gallon doesyour bus get?Round your answer to the nearest tenth of a mile.The bus gets miles per gallon,
Given the following question:
Part A:
75 dollars to spend on gaS
Gas per gallon costs $2.80
[tex]\begin{gathered} 75\div2.80=26.7857143 \\ 26.7857143 \\ 8>5 \\ 26.8\text{ gallons of gas} \end{gathered}[/tex]With 75 dollars you can buy "26.8 gallons of gas."
Part B:
We know we can travel 230 miles with 26.8 gallons of gas, now we have to find out how many miles can we travel PER gallon of gas.
[tex]\begin{gathered} 230\div26.8=10.4477612 \\ 10.4477612 \\ 4<5 \\ 10.4\text{ miles per gallons} \end{gathered}[/tex]"10.4 miles" per gallon
diagram 10 shows a straight line PQ with point P(-4,9) and Q(12,1).
We have a line defined by two points, P(-4,9) and Q(12,1).
Knowing two points of the line, we can calculate the slope with the formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]In this case, the slope will be:
[tex]\begin{gathered} m=\frac{y_Q-y_P}{x_Q-x_P} \\ m=\frac{1-9}{12-(-4)}=\frac{-8}{12+4}=-\frac{8}{16}=-\frac{1}{2} \end{gathered}[/tex]With the slope and one point we can express the equation in slope-point form:
[tex]\begin{gathered} y-y_0=m(x-x_0) \\ y-y_Q=m(x-x_Q) \\ y-1=-\frac{1}{2}(x-12) \\ y=-\frac{1}{2}x+\frac{12\cdot1}{2}+1 \\ y=-\frac{1}{2}x+6+1 \\ y=-\frac{1}{2}x+7 \end{gathered}[/tex]The x-intercept is the value of x that makes the function f(x) become 0.
In this case, we have to find x so that y = 0.
We can replace y in the equation and calculate x as:
[tex]\begin{gathered} y=0 \\ -\frac{1}{2}x+7=0 \\ -\frac{1}{2}x=-7 \\ x=-7\cdot(-2) \\ x=14 \end{gathered}[/tex]Then, for the x-intercept is x = 14.
Answer:
a) The equation of the line is y = (-1/2)*x+7
b) The x-intercept is x = 14.
Part A find the value of each variable
x=14, y=15
x=14, y=-5
x=24, y=-10
x=24, y-5
Part B
the angle measures?
100°
50°
80°
130°
Answer:
Part A:
Option 1
3x + 8 = 5x - 20 (vertically opposite angles)
2x = 28
x = 14
3x + 8 + 5x + 4y = 180° (adjacent angles on a straight line)
8x + 4y = 172
Substitute x = 14 into equation to find y.
8(14) + 4y = 172
4y = 60
y = 15
Hence, x = 14 and y = 15.
Part B:
Option 4
Unlabeled angle = 5x + 4y (vertically opposite angles)
Substitute x and y to find angle measure.
5(14) + 4(15) = 130°
Hence, measure of unlabeled angle is 130°.
customer account “numbers” for a certain company consists of 4 letters followed by 2 single digit numbers. how many different account numbers are possible if repetitions of letters and digits are allowed?
Two motorcycle dealers sell the same motorcycle for the same original price. Dealer A advertises that the motorcycle is on sale for 7.5% off the original price. Dealer B advertises that it is reducing the motorcycle’s price by $599. When Bonnie compares the sale prices of the motorcycles in both dealers, she concludes that the sale prices are equal.
Let p represent the motorcycle’s original price.
Which equation models this situation?
0.075p = p − 599
0.925p = p + 599
0.075(p−599) = p
0.925p =
AND NO SPAM I WILL REPORT YOU AND BAN YOU IMMEADIATLEY AND HELP THIS IS DUE TODAY!! SO FAST PLS
Considering the definition of an equation, the equation 0.925p= p - 599 models the following situation: the sale prices of the motorcycles in both dealers are equal.
Definition of equationAn equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values appear in addition to certain known data.
The solution of a equation means determining the value that satisfies it and the equality is true. To solve an equation, keep in mind:
When a value that is adding, when passing to the other member of the equation, it will subtract.If a value you are subtracting goes to the other side of the equation by adding.When a value you are dividing goes to another side of the equation, it will multiply whatever is on the other side.If a value is multiplying it passes to the other side of the equation, it will pass by dividing everything on the other side.Equation in this caseBeing "p" the motorcycle’s original price, you know that:
Dealer A advertises that the motorcycle is on sale for 7.5% off the original price → Sale price A= 100%×p - 7.5%×p → Sale price A= (100% - 7.5%)× p → Sale price A= 92.5%p → Sale Price A= 0.925p (expressed as decimals)Dealer B advertises that it is reducing the motorcycle’s price by $599. → Sale price B=p - 599If the sale prices are equal, the equation in this case is:
Sale price A= Sale price B
0.925p= p - 599
Finally, the equation 0.925p= p - 599 represent the situation.
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Colleen truman earns 5% commission on all sales in june her sales totaled 54,000$ how much did she earn in commission?
The amount earned as commission in the month of June is $2700
How to determine the amount earned as commission?From the question, we have the following parameters that can be used in our computation:
Commission percentage = 5%
Total sales in the month of June = $54000
The amount earned as commission in the month of June is then calculated as
Amount = Commission percentage x Total sales in the month of June
Substitute the known values in the above equation
So, we have
Amount = 5% x 54000
Evaluate
Amount = 2700
Hence, the commission amount is $2700
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Henry purchased compact disks for $112. The compact discs cost $16 each.Which of the following equations could you use to find how many compact disks, x, Henry purchased?$16 = $112xO $112 = $16xXO $112=16$112 = x - $16
Problem
Henry purchased compact disks for $112. The compact discs cost $16 each.
Which of the following equations could you use to find how many compact disks, x, Henry purchased?
Solution
We can set up the following notation:
x= number of disks
total cost = (number of disks)* (unitary price)
Total cost = $112
number of disks =x
unitary price = $16
Replacing we got:
112 = x*16
For this case the correct equation would be given by:
$112 = $16x
True or false?
Raising prices is the quickest way to resolve excess demand.
Answer:
this is true
Step-by-step explanation:
A committee of 6 is to be chosen from the 28 students in a class. If there are 10 males and 18 females in the class, in how many ways can this be done if there must be at least three females on the committee? A: 339864B: 816720C: 3060D: 18564
Hello! First, let's write some important information contained in the exercise:
committee = 6 students
class: 28 students:
- 10 males
- 18 females
Let's consider the rule: At least three females must be on the committee, so we have some cases, look:
_F_ * _F_ * _F_ * __ * __ * __
1st option:
3 females and 3 males
_F_ * _F_ * _F_ * _M_ * _M_ * _M_
2nd option:4 females and 2 males
_F_ * _F_ * _F_ * _F_ * _M_ * _M_
3rd option:5 females and 1 male
_F_ * _F_ * _F_ * _F_ * _F_ * _M_
4th option:6 females and 0 male
_F_ * _F_ * _F_ * _F_ * _F_ * _F_
Now, we have to use the formula below and find the number of possible combinations:
[tex]C_{n,p}=\frac{n!}{p!\cdot(n-p)!}[/tex]Let's calculate each option below:
1st:3 females:
[tex]C_{18,3}=\frac{18!}{3!\cdot(18-3)!}=\frac{18\cdot17\cdot16\cdot15!}{3\cdot2\cdot1\cdot15!}=\frac{4896}{6}=816[/tex]3 males:
[tex]C_{10,3}=\frac{10!}{3!\cdot(10-3)!}=\frac{10\cdot9\cdot8\cdot7!}{3\cdot2\cdot1\cdot7!}=\frac{720}{6}=120[/tex]3 females and 3 males: 816 * 120 = 97920
2nd option:4 females:
[tex]C_{18,4}=\frac{18!}{4!\cdot(18-4)!}=\frac{18\cdot17\cdot16\cdot15\cdot14!}{4\cdot3\cdot2\cdot1\cdot14!}=\frac{73440}{24}=3060[/tex]2 males:
[tex]C2=\frac{10!}{2!\cdot(10-2)!}=\frac{10\cdot9\cdot8!}{2\cdot1\cdot8!}=\frac{90}{2}=45[/tex]4 females and 2 males: 3060* 45 = 137700
3rd option:5 females:
[tex]C_{18,5}=\frac{18!}{5!\cdot(18-5)!}=\frac{18\cdot17\cdot16\cdot15\cdot14\cdot13!}{5\cdot4\cdot3\cdot2\cdot1\cdot13!}=\frac{1028160}{120}=8568[/tex]1 male:
[tex]C_{10,1}=\frac{10!}{1!\cdot(10-1)!}=\frac{10!}{1\cdot9!}=\frac{3628800}{362880}=10[/tex]5 females and 1 male = 8568 * 10 = 85680
4th option:6 females and 0 male:
[tex]C_{18,6}=\frac{18!}{6!\cdot(18-6)!}=\frac{18\cdot17\cdot16\cdot15\cdot14\cdot13\cdot12!}{6\cdot5\cdot4\cdot3\cdot2\cdot1\cdot12!}=\frac{13366080}{720}=18564[/tex][tex]C_{10,0}=\frac{10!}{0!\cdot(10-0)!}=\frac{10!}{10!}=1[/tex]6 females and 0 male: 18564 * 1 = 18564
To finish the exercise, we have to sum the four options:
97920 + 137700 + 85680 + 18564 = 339864
So, right answer A: 339864.
The table and graph show the population or Oregon
From the given table, it is found that:
a. The average population decline was of 2,250 deer a year.
b. The population would have reached 225 thousand deer during the years of 2017 and 2018.
What is the average rate of change of a function?The average rate of change of a function is given by the change in the output divided by the change in the input of the function. Hence, over an interval [a,b], the average rate of change is given as follows:
[tex]r = \frac{f(b) - f(a)}{b - a}[/tex]
In 1984 and 2018, the populations are given as follows:
1984: 250 thousand.2018: 173.5 thousand.Hence the rate of change is given as follows:
r = (173.5 - 250)/34 = -2.25.
(2.25 thousand = 2,250).
For item b, the following linear function is built:
y = 230.5 - 1.45x.
The amount would be of 225 when:
230.5 - 1.45x = 225
1.45x = 5.5.
x = 5.5/1.45
x = 3.79.
Hence between the years of 2017 and 2018.
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Vector vector v equals vector RS has points R(−2, 12) and S(−7, 6). What are the magnitude and direction of vector RS question mark Round the answers to the thousandths place.
Take into account that vector v can be written as follow:
[tex]\vec{v}=(x-x_o)\hat{i}+(y-y_o)\hat{j}[/tex]where (x,y) and (xo,yo) are two points on the vector.
In this case, we can use (xo,yo) = R(-2,12) and (x,y) = S(-7,6). By replacing these values into the expression for vector v, we obtain:
[tex]\begin{gathered} \vec{v}=(-7-(-2))\hat{i}+(6-12)\hat{j} \\ \vec{v}=-5\hat{i}-6\hat{j} \end{gathered}[/tex]Now, consider that the magnitude of v is the square root of the sum of the squares of the components. Then, we have for the magnitud of v:
[tex]v=\sqrt[]{(-5)^2+(-6)^2}=\sqrt[]{25+36}=\sqrt[]{61}\approx7.810[/tex]Hence, the magnitude of v is approximately 7.810.
Now, consider that the tangent of the angle of the direction of the vector is equal to the quotient between the y component over the x component of the vector:
[tex]\begin{gathered} \tan \theta=\frac{-6}{-5} \\ \theta=\tan ^{-1}(\frac{-6}{-5})\approx230.194 \end{gathered}[/tex]Hence, the direction of vector v is approximately 230.194 degrees.
Identify which method for solving systems is being described by this fact:
The intersection point of the two lines is an ordered pair (x, y) and determines the value of the solution to the system of equations.
For the description "The intersection point of the two lines is an ordered pair (x, y) and determines the value of the solution to the system of equations." Graphing method for solving systems is in play. Option A
This is further explained below.
What is Graphing method for solving systems?Generally, Construct a graph using the first equation.
Create a graph using the same rectangular coordinate system for the second equation.
Find out whether the lines overlap, if they run parallel to one another, or if they are the same line.
In conclusion, Find a solution to the problem that we are having. In the event that the lines meet, locate the location where they do so.
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CQ.
Identify which method for solving systems is being described by this fact:
The intersection point of the two lines is an ordered pair (x, y) and determines the value of the solution to the system of equations.
answer choices
Graphing
Substitution
Elimination (adding or multiplying)
The sides of a scalene triangle have measures that are consecutive even integers. If the perimeter of this
triangle is 60 inches, what is the length of the longest side of the triangle?
Answer: 22
Step-by-step explanation:
Let the sides have lengths [tex]x-4, x-2, x[/tex]. Since the perimeter is 60,
[tex]x-4+x-2+x=60\\\\3x-6=60\\\\3x=66\\\\x=22[/tex]
So, the length of the longest side is 22 units.
The formula for the volume of a cylinder is V=²2h. The cylinder to the right has an exact volume of 480 cubic meters. Find its height.
The height of the cylinder is
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The height of cylinder when volume of 480 cubic meters is 480/r^2.
What is volume?Volume serves as a measure for an object's storage capacity. For instance, a cup's volume is said to be 100 ml if it can hold 100 ml of water when filled to the brim. The amount of space a three-dimensional object occupies is another way to define volume.
A solid's volume can be calculated by counting how many unit cubes it contains, such as in the case of a cube or cuboid. The best way to understand volume is to think of it as the area surrounded or occupied by any solid object or object with three dimensions. This can be seen by performing the following easy exercise at home:
volume of cylinder V is = πr²h
where, r = radius of cylinder
h = height of cylinder
V = 480π cubic meters
Now, calculate its height in terms of cylinder radius using the volume of cylinder formula:
V = πr²h
480π = πr²h
h = 480π/ πr²2
h = 480/r²
Therefore, The height of cylinder when volume of 480π is 480/r².
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