Answer:
Projected height = (85 *21) / 35 = 51 cm
Step-by-step explanation:
Since the images are similar, we can set up the proportional equation like this:
Slide width / Slide height = Projected width / Projected height
35 mm / 21 mm = 85 cm / Projected height (in cm)
Projected height = (85 *21) / 35 = 51 cm
Given the following information, determine which lines, if any, are parallel. State the
postulate or theorem that justifies your answer.
1. Lines a and b are parallel by the converse of alternate interior angles theorem
2. l║m by the converse of consecutive interior angles theorem.
What is the Converse of Alternate Interior Angles Theorem?Given that the interior angles, ∠3 ≅ ∠7, according to the converse of alternate interior angles theorem, the lines they are found on, lines a and b would be parallel.
1. Lines a and b are parallel.
What is the Converse of Consecutive Interior Angles Theorem?Given that the interior angles, m∠5 + m∠12 = 180, according to the converse of consecutive interior angles theorem, the lines they are found on, lines l and m would be parallel.
2. Lines l and m are parallel.
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A bird sits at the top of a 24 ft tall tree. A cat, 12 ft away from the base of the tree, sees the bird. To the nearest degree, what is the angle of elevation from the cat to the bird?
Answer:
https://brainly.com/question/14172055?referrer=searchResults
Step-by-step explanation:
Your question has already been answered.
Here is the link to the answer:
https://brainly.com/question/14172055?referrer=searchResults
Hope this helps!
If not, I am sorry.
A rectangular container with a square base, an open top, and a volume of 1,372 cm3 is to be made. What is the minimum surface area for the container
The minimum surface area for the rectangular container is [tex]588cm^{2}[/tex].
How to find the surface area?A solid object's surface area is a measurement of the overall space that the object's surface takes up. Compared to the definition of the arc length of a one-dimensional curve or the definition of the surface area for polyhedra (i.e., objects with flat polygonal faces), where the surface area is equal to the sum of the areas of its faces, the mathematical definition of surface area in the presence of curved surfaces is much more complex.
Let s be the side of the square base and h be the height.
Surface Area=[tex]s^{2}+4sh[/tex]
Volume=[tex]s^{2}h[/tex]
According to the question,
[tex]s^{2}h=1372\\ h=\frac{1372}{s^{2} }[/tex]
So, surface area=[tex]s^{2} +4s(\frac{1372}{s^{2} })[/tex]
=[tex]s^{2}+\frac{5488}{s}[/tex]
Differentiate with respect to s,
Surface area=[tex]2s-\frac{5488}{s^{2} }[/tex]
Now, [tex]2s-\frac{5488}{s^{2} }=0[/tex]
[tex]2s=\frac{5488}{s^{2} } \\2s^{3}=5488\\ s^{3}=2744\\ s=14[/tex]
Find the value of h from the volume.
[tex]14*14*h=1372\\h=\frac{1372}{14*14}\\ h=7[/tex]
Thus, the minimum surface area=[tex]14^{2}+4*14*7[/tex]
=[tex]588cm^{2}[/tex]
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Eden just bought a trough in the shape of a rectangular prism for her horses. She needs to know what volume of water to add to the trough. She knows that the height of the trough is 13 inches shorter than the width, and that the length is 33 inches longer than the width.
The volume of the trough, V(w), can be modeled by a polynomial function, where w is the width of the trough. Which of the following correctly models the situation and gives the rate of change of the volume over a width of 38 inches to 53 inches?
A. V(w)= w^3 + 20w^2 - 429w
Rate of Change: 2167 cubic inches per inch
B. V(w)= w^3 + 20w^2 - 429w
Rate of Change: 7658 cubic inches per inch
C. V(w)=w^2 + 429w
Rate of Change: 520 cubic inches per inch
D. v(w) = w^2 + 20w - 429
Rate of Change: 111 cubic inches per inch
The volume of the trough is V(w) = w³ + 20w² - 429w and the rate of change of the volume over a width of 38 inches to 53 inches is 4695 in³/in
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
Let w represent the width, hence:
length = w + 33, height = w - 13
Volume (V) = w(w + 33)(w - 13) = w³ + 20w² - 429w
V(w) = w³ + 20w² - 429w
Rate of change = dV/dw = 3w² + 40w - 429
When w = 38, dV/dw = 3(38)² + 40(38) - 429 = 5423
When w = 53, dV/dw = 3(53)² + 40(53) - 429 = 10118
Rate = 10118 - 5423 = 4695 in³/in
The volume of the trough is V(w) = w³ + 20w² - 429w and the rate of change of the volume over a width of 38 inches to 53 inches is 4695 in³/in
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Use matrix method to find the point of intersection between the lines:
5x+3y-35=0 and 3x-4y=-8
Hello !
[tex]\begin{cases} 5x+3y - 35&=0 \\ 3x - 4y &= - 8 \end{cases}[/tex]
[tex]\Leftrightarrow\begin{cases} 5x+3y &=35 \\ 3x - 4y &= - 8 \end{cases}[/tex]
[tex]\Leftrightarrow AX = B [/tex]
With
[tex]A=\left[\begin{array}{ccc}5&3\\3& - 4\end{array}\right] [/tex]
[tex]X=\left[\begin{array}{ccc}x\\y\\\end{array}\right] [/tex]
[tex]B=\left[\begin{array}{ccc}35\\ - 8\\\end{array}\right] [/tex]
The solution is given by [tex]X=A^{-1}B[/tex].
[tex]X= {\left[\begin{array}{ccc}5&3\\3& - 4\end{array}\right] }^{ - 1} \left[\begin{array}{ccc}35\\ - 8\\\end{array}\right] [/tex]
[tex]X=\left[\begin{array}{ccc}4\\ 5\\\end{array}\right] [/tex]
The point of intersection between the lines is (4;5).
Have a nice day
Answer:
Point of intersection (4,5)
Step-by-step explanation:
5x + 3y - 35 = 0
3x - 4y = -8
⇒ 5x + 3y = 35
3x - 4y = -8
Matrix A will be formed by the coefficient of x and y. Matrix B will be formed by the constants.
[tex]\sf A = \left[\begin{array}{cc}5&3\\3&-4\end{array}\right][/tex]
[tex]\sf B = \left[\begin{array}{c}35&-8\end{array}\right][/tex]
AX = B
[tex]\sf X =A^{-1}B[/tex]
[tex]Now ,\ we \ have \ to \ find \ A^{-1}[/tex],
Find the workout in the document attached.
Which phrase best describes the translation from the graph y = 6x2 to the graph of y = 6(x + 1)2?
The statement which best describes the translation from the graph y= 6x² to the graph of y = 6(x+1)² is; The translation represents a unit shift rightward.
Which phrase best describes the translation from the graph?The translation involved in the transformation of the graph as given in the task content represents a rightward shift of the graph y = 6x² by 1 unit.
On this note, it follows that the translation involved between the two graphs is; a unit shift to the right.
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Answer:
Step-by-step explanation:
one unit to the right
Jarom is working for a landscaping company and is responsible for building the stone border around a rectangular pond. The pond measures 6 meters by 15 meters. The manager told Jarom that the budget only allowed enough stone for 46 square meters and to make the stone border as wide as possible. How wide can the border be
The width is 1 meter.
Given,
Jarom is working for a landscaping company and is responsible for building the stone border around a rectangular pond.The pond measures 6 meters by 15 meters. The manager told Jarom that the budget only allowed enough stone for 46 square meters
Let the border be width = x
then the area of the border will be
2(6x) + 2(15x) +4x2 = 46
= 12x +30x+ 4x2 = 46
= 4x2 + 42x - 46 = 0
=> x =( -42 +- √42² +4*4*46)/8
x =1 , x = -11.5
since the width is 1 meter.
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What is the completely factored form of 6 x squared minus 13 x minus 5? (2x - 5)(3x 1) (2x 5)(3x - 1) (2x - 1)(3x - 5) (2x 1)(3x 5)
Answer:
(2x - 5)(3x + 1)
Step-by-step explanation:
6x² - 13x - 5
ax² + bx + c
ac = 6 × (-5) = -30
-30 = -15 × 2
-13 = -15 + 2
6x² - 13x - 5 =
= 6x² - 15x + 2x - 5
= 3x(2x - 5) + 1(2x - 5)
= (2x - 5)(3x + 1)
Answer: its a.) (2x-5)(3x+1)
Step-by-step explanation:
6x² - 13x - 5ax² + bx + cac = 6 × (-5) = -30-30 = -15 × 2-13 = -15 + 26x² - 13x - 5 == 6x² - 15x + 2x - 5= 3x(2x - 5) + 1(2x - 5)= (2x - 5)(3x + 1)
and got it right on the test review.
anybody can help me?
The graph that corresponds to the proportional relationship M = 3n is graph vs.
What is a proportional relationship?A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:
y = kx
In which k is the constant of proportionality.
In this problem, the relationship is:
M = 3n.
Considering that the montant is the vertical axis, the graph is composed by points (n, 3n), that is, the vertical axis is triple the horizontal axis, having points (100, 300), (200, 600) and so on, the graph is graph vs.
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A sphere and a cylinder have the same radius and height. The volume of the cylinder is 8 meters cubed. Yolanda found the volume of the sphere.
A sphere with height h and radius r. A cylinder with height h and radius r.
Her work is shown below.
V = four-thirds (8) cubed. V = four-thirds (512). V = StartFraction 2,048 Over 3 EndFraction meters cubed.
What is Yolanda’s error?
Yolanda should have found the volume by multiplying 8 by Two-thirds.
Yolanda should have found the volume by multiplying 8 by Four-thirds.
Yolanda should have found the volume with the formula V = two-thirds pi (8) cubed.
Yolanda should have found the volume with the formula V = two-thirds (8) cubed.
Yolanda’s error during the calculation of the volume is that A. Yolanda should have found the volume by multiplying 8 by Two-thirds.
How to illustrate the volume?It should be noted that the volume of a sphere is simply 4/3πr³.
In this case, the sphere and a cylinder have the same radius and height and the volume of the cylinder is 8 meters cubed.
Based on the information given, Yolanda’s error during the calculation of the volume is that she should have found the volume by multiplying 8 by two-thirds.
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help aaahhhh
x =x=x, equals
^\circ
∘
degrees
Using supplementary angles, it is found that the measure of angle x is of 65º.
What are supplementary angles?Angles are called supplementary if the sum of their measures is of 180º.
In this problem, angles x, 25, and 90º are supplementary, hence:
x + 25 + 90 = 180
x = 180 - (25 + 90)
x = 65º.
The measure of angle x is of 65º.
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Terry runs a snowplowing business. income from snowplowing is given by the function f(x) = 35.5x 6, where f(x) is the income in dollars and x is the snowfall in inches received during a winter. if during the years 2006 to 2011, terry’s town received 53, 42, 55, 63, 58, and 47 inches of snowfall, what was his income (in dollars) during those years?
If the function is f(x)=35.5x+6 and snowfall in inches are 53,42,55,63,58,47 then the income received will be $1887.5,$1497,$1958.5,$2242.5,$2065$1674.5.
Given Snowfall received during the years:53,42,55,63,58,47 and f(x)=35.5x+6
We have to find the income in dollars received if f(x) shows the income.
Function is a relationship between variables and it have each value of y for each value of x.
To find the income we have to just put the values of x=53,42,55,63,58,47one by one and we will get income.
f(53)=35.5*53+6=1887.5
f(42)=35.5*42+6=1497
f(55)=35.5*55+6=1958.5
f(63)=35.5*63+6=2242.5
f(58)=35.5*58+6=2065
f(47)=35.5847+6=1674.5
Hence the income for snowfall 53,42,55,63,58,47 inches are 1887.5,1497,1958.5,2242.5,2065,2674.5.
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Which of the following is a fifth root of the given complex number?
Answer:
D
Step-by-step explanation:
This result is true by De Moivre's theorem.
HELP ASAP NO ROCKY!!!!!!!!
Answer:
○ The distance between a and b on the number line is 0.47 units.
Explanation:
The first statement is not true because the distance between a and b on the number line is not 0.47.
Distance between a and b = 5.25 - (-5.72)
= 10.97
• The second statement is true because the sum of a and b is negative:
Sum = a + b
= -5.72 + 5.25
= -0.47
• The third statement is true because the quotient of a and -b is:
a ÷ -b
⇒ -5.72 ÷ -5.25
⇒ 1
And the quotient of -a and b is:
-a ÷ b
⇒ -(-5.72) ÷ 5.25
⇒ 1
This shows that the quotients are the same.
• The fourth statement is true because the product of a and -b:
a × -b
⇒ -5.72 × -(5.25)
⇒ 30.03 ,
is positive.
Question 2 of 25
f(x) = 6x + 4. Find the inverse of f(x).
O A. f¹(x) = 4 − 6x
Ỏ B. f-1(2) = *
O c. f¹(x) = -6
OD. f¹(x) = 6x − 4
I NEED YA HELP BRO.!
The inverse function of f(x) = 6x + 4 is f^-1(x) = (x - 4)/6
How to determine the inverse function?The function is given as:
f(x) = 6x + 4
Rewrite as:
y = 6x + 4
Swap x and y
x = 6y + 4
Subtract 4 from both sides
6y = x - 4
Divide through by 6
y = (x - 4)/6
Rewrite as:
f^-1(x) = (x - 4)/6
Hence, the inverse function of f(x) = 6x + 4 is f^-1(x) = (x - 4)/6
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Please help! Which is the solution set of the following inequality?
Answer:
x<3
Step-by-step explanation:
3x - 4 < 17 - 4x
So, the -4 shall cross to the other side and replace the -4x which will now take the place of where the -4 used to be and the signs of both digits will change to a positive (+)
Remember the inequality sign (<) shall not change
so now the equation shall appear like this;
3x + 4x < 17 + 4
add both sides and it will appear like this;
7x < 21
simplify both sides by 7 and you'll get
x < 3
You enter a room. 2 dogs, 4 horses, 1 giraffe and a duck lie on the bed. 3 hens fly over a chair. How many legs are there on the floor?.
Answer:
4 legs from the bed and 4 from the chair im guessing since not all have 4
Hope This Help
Answer:
4 legs from the bed and 4 from the chair
Step-by-step explanation:
im a math wizard fr
The expression (x+5)(x+8)+(x+5)(2x-3) can be written as the product of (x+5) and
Not mathematics, but can someone help me, and tell me what grade I deserve?
Answer:
I am not sure how that works but from the way it look and adding it up it comes to 66.6 but I was thinking around 75 - 85
Step-by-step explanation:
Alice is playing a game in which she will roll 4 6-sided dice at the same time. She gets 5 points for each die that shows an even result. Let x represent the total number of points awarded on any given toss of the dice. What is the expected value of x
The expected value of x is 10.
It is given that the number of dice that are showing an even number is a binomial random variable with n = 4, and p = 1/2 (because half the faces on the die are even and half are odd).
The expected value of this random variable is n*p = 4*1/2 = 2.
The number of points is simply 5 times this random variable, and by the rules of expected value, E(C*Y) = C*E(Y), where C is a constant and Y is a random variable.
Thus E(X) = 5*2 = 10.
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Which phrase best describes the translation from the graph y = (x – 5)2 + 7 to the graph of y = (x + 1)2 – 2?
The parent. function shifted up by 6 units to produce x + 1 and to the left by 9 units
What is translation?This is a way of changing the position of an object on an xy-plane.
Given the parent function expressed as y = (x – 5)^2 + 7
From the resulting image after translation, we can see that the parent. function shifted up by 6 units to produce x + 1 and to the left by 9 units
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Please help and explain! :( I really need this
Select the correct answer.
Consider the absolute value functions c and d
An absolute value function where red line d intercepts d of x at (0, 4) and vertex at (minus 1, 2)
Which statement correctly describes these functions?
A.
The maximum value of d is 5 less than the minimum value of c.
B.
The maximum value of d is 3 less than the minimum value of c.
C.
The minimum value of d is 3 more than the maximum value of c.
D.
The minimum value of d is 5 more than the maximum value of c.
Answer:
d - the minimum value of d is 5 more than the maximum value of c
Step-by-step explanation:
we can see from the graph that d has a minimum value
that value is at (-1, 2) and the minimum is 2
for c the vertex is where the graph reflects itself
that point is (-4, -3) and the maximum is -3
that means that the minimum value of d is 5 more than the maximum value of c because 2 - (-3) = 5
Can someone help with these geometry fill in blank questions? Just 9, 10, 11, 12.. it’s urgent
EG is a tangent to the circle below at point F.
Calculate the size of angle x.
Give reasons for your answer.
[tex]\angle FHD=74^{\circ}[/tex] (alternate segment theorem)
[tex]x=77^{\circ}[/tex] (angles in a triangle add to 180 degrees)
A globe company currently manufactures a globe that is 20 inches in diameter. if the dimensions of the globe were reduced by half, what would its volume be? use 3.14 for π and round your answer to the nearest tenth. 166.7 in3 1333.3 in3 523.3 in3 4186.7 in3
The volume of the modified globe would be 523.3 cubic inches (Option 3)
What is the volume of the globe with modified dimensions?
Information Given
The current diameter of the globe = 20 inches
We know that the radius of a sphere (globe) is half its diameter.
⇒ The radius of the globe = 10 inches
If the dimensions of the globe were reduced by half, the new diameter would be, [tex]\frac{20}{2} = 10[/tex] inches.
⇒ New radius of the globe, [tex]r = 10[/tex] inches
Calculating the Volume of the Modified Globe
The volume of a sphere (globe) is given by,
[tex]V = \frac{4}{3} \pi r^{3}[/tex]
Here, [tex]r[/tex] is the new radius of the globe.
∴ The volume of the new globe would be,
[tex]V = \frac{4}{3} \pi (5)^{3}[/tex]
Use [tex]\pi =3.14[/tex]
⇒ [tex]V = \frac{4}{3} (3.14) (5)^{3}[/tex]
⇒ [tex]V = 523.333..[/tex] cubic inches
Rounding off the result to the nearest tenth, we get,
[tex]V = 523.3[/tex] cubic inches
Thus, if the dimensions of the globe were reduced by half, its volume would be 523.3 cubic inches.
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3. Match the polynomial to it's correct name.
1. Quadratic trinomial
2. Cubic monomial
3. Linear binomial
4. Quartic trinomial
a. h(x) = 15x+2
b. j(x)=x²-3x³ + 9x²
c. f(x)= 3x² - 5x+7
d. 8(x)=-5x³
Answer:
1. to c.
2. to d.
3. to a.
4. to b.
Step-by-step explanation:
These answers should be right.
Hope this helps!
The matching of the polynomials to their correct names are:
a. h(x) = 15x+2 is a linear binomial
b. j(x)=x²-3x³ + 9x² is a Quartic trinomial
c. f(x)= 3x² - 5x+7 is a Quadratic trinomial
d. 8(x)=-5x³ is a Cubic monomial
How to Identify the Polynomials?A polynomial is an expression having more than one algebraic terms.
1) A quadratic trinomial is a polynomial that is defined as a quadratic expression with all three terms in the form of ax² + bx + c, where a, b, and c are numbers and not a 0.
2) A cubic monomial is defined as a a monomial that has a degree of 3.
3) Linear binomial is defined as a polynomial with two terms whose variable has degree 1. For example, 4x − 5 or 3x + 12 are both linear binomials.
4) A quartic trinomial is defined as a polynomial with three terms having the highest degree 4
Thus:
a. h(x) = 15x+2 is a linear binomial
b. j(x)=x²-3x³ + 9x² is a Quartic trinomial
c. f(x)= 3x² - 5x+7 is a Quadratic trinomial
d. 8(x)=-5x³ is a Cubic monomial
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Sarah received scores of 85, 92 and 78 on her first three exams of the grading period. What is the lowest score Sarah can earn on the next exam for the exam average to be at least a 87 for the grading period.
Please help ill give whoever answers the best the brainliest answer :)))
Answer:
4th option
Step-by-step explanation:
L = larger softball and S = smaller softball ,then
L + S = 80 → (1) ← equation based on number of softballs ordered
2.75L + 3.25S = 245 → (2) ← equation based on cost
subtract S from both sides in (1)
L = 80 - S → (3)
substitute L = 80 - S into (2)
2.75(80 - S) + 3.25S = 245 ← distribute parenthesis and simplify left side
220 - 2.75S + 3.25S = 245
220 + 0.5S = 245 ( subtract 220 from both sides )
0.5S = 25 ( divide both sides by 0.5 )
S = 50
substitute S = 50 into (3)
L = 80 - 50 = 30
50 small softballs and 30 large softballs were ordered
Answer:
the 4th answer option
Step-by-step explanation:
L, S are the number of balls of that size.
so, L + S = 80. as we order a total of 80 balls.
then each large ball costs $2.75. and each small ball costs $3.25.
so, the total price is
2.75L + 3.25S = 245
as we order balls in total for $245.
so, this set of 2 equations with 2 variables allows us to find the solution.
one defines the total number of balls, and one defines the total amount of money spent by using the individual prices for each type of ball.
the advantage of variables is that we can define the rising and dependencies before we have to calculate any of them specifically.
and once we have all of them defined, then we can start solving the numbers.
Which of the following equations results in infinitely many solutions?
9x80 = 8(x + 10)
9x + 10- 1x = 8(x + 10)
9x + 80 1x = 8(x + 10)
9x + 80 1x = 9(x + 10)
The equation with infinitely many solutions is:
9x + 80 - 1x = 8*(x + 10)
Which equation has infinitely many solutions?
An equation has infinitely many solutions when the dependence on x vanishes.
If you look at the third equation, we get:
9x + 80 - 1x = 8*(x + 10)
If we simplify the left side and expand the right side, we get:
8x + 80 = 8x + 80
So we have the exact same thing in both sides, this means that the equation is true for any value of x, so the equation has infinite solutions.
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Use the table to find the products of the two polynomials. Write your answer in
descending order. B) (x2 + x – 2)(4x2 – 8x)
The products of the two polynomials (x² + x – 2) and (4x² – 8x) is 4x⁴ - 4x³ - 16x² + 16x
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
The products of the two polynomials (x² + x – 2) and (4x² – 8x) is:
= 4x⁴ - 8x³ + 4x³ - 8x² - 8x² + 16x
= 4x⁴ - 4x³ - 16x² + 16x
The products of the two polynomials (x² + x – 2) and (4x² – 8x) is 4x⁴ - 4x³ - 16x² + 16x
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