Answers
1a. No, the value of 60% of 400 is 240.
1b. No, the value of 60% of 200 is 120.
1c. No, the value of 60% of 120 is 72.
2. The equation the express the relation 60%, x, and 87 is 0.6x = 87. The value of x is 145.
3a.The equation is0.6c = 43.2. The value of c is 72.
3b. The equation is0.38e = 190. The value of e is 500.
What is an equation?
A mathematical statement known as an equation is made up of two expressions joined together by the equal sign. A formula would be 3x - 5 = 16, for instance. When this equation is solved, we discover that the value of the variable x is 7.
1.a
Compute the vale of 60% of 400.
Using the formula a% = a/100
60% of 400 = 60/100 of 400
Replace of by multiplication:
60% of 400 = (60/100) × 400
60% of 400 = 240.
1b.
Compute the vale of 60% of 200.
Using the formula a% = a/100
60% of 200 = 60/100 of 200
Replace of by multiplication:
60% of 200 = (60/100) ×2 00
60% of 400 = 120.
1c.
Compute the vale of 60% of 120.
Using the formula a% = a/100
60% of 120 = 60/100 of 120
Replace of by multiplication:
60% of 120 = (60/100) × 120
60% of 400 = 72.
2.
Given that 60% of x is 87.
Compute the vale of 60% of x.
Using the formula a% = a/100
60% of x = 60/100 of x
Replace of by multiplication:
60% of x = (60/100) × x
60% of x = 0.6x
Therefore the relationship is 0.6x = 87
Now divide both sides by 0.6:
x = 87/0.6
x = 145.
3a.
Given that 60% of c is 43.2.
Compute the vale of 60% of c.
Using the formula a% = a/100
60% of c = 60/100 of c
Replace of by multiplication:
60% of c = (60/100) × c
60% of c = 0.6c
Therefore the relationship is 0.6c = 43.2
Now divide both sides by 0.6:
c = 43.2/0.6
c =72.
3b.
Given that 38% of e is 190.
Compute the vale of 38% of e.
Using the formula a% = a/100
38% of e = 38/100 of e
Replace of by multiplication:
38% of e = (38/100) × e
38% of e = 0.38e
Therefore the relationship is 0.38e = 190
Now divide both sides by 0.38:
e = 190/0.38
e = 500.
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Related Questions
PLEASE HELP AGAIN I STILL NEED TO GET THESE DONE
Answers
Answer:
........................
A water tank initially contained 57 liters of water. It is being drained at a constant rate of 2.5 liters per minute.
How many minutes have passed m when the tank contains 35 liters? Round go the nearest tenth
Answers
Answer:
8.8 minutes
Step-by-step explanation:
first we figure out how many liters are being lost
57 - 35 = 22
then divide that by 2.5
22 / 2.5 = 8.8
8.8 minutes
The size of a population is modeled by the function P that satisfies the logistic differential equation dP/dt=(1/10)P - (1/5000)P^2 , where t is measured in months and P (0) = 50. What is the size of the population at the moment when the population is growing most rapidly? A. 50 B. 250 C.500 D. 2500
Answers
The correct answer is A.
500 is the size of the population at the moment of maximum growth.
Given data:
To find the size of the population at the moment when the population is growing most rapidly, we need to determine the maximum value of the derivative dP/dt.
Given the logistic differential equation [tex]\frac{dP}{dt} = (\frac{1}{10})P - (\frac{1}{5000})P^2[/tex], find the derivative by taking the derivative of each term separately:
[tex]\frac{dP}{dt} = (\frac{1}{10})P - (\frac{1}{5000})P^2[/tex]
To find the critical points where the derivative is zero or undefined, set dP/dt equal to zero:
[tex](\frac{1}{10})P - (\frac{1}{5000})P^2=0[/tex]
Simplifying:
[tex](\frac{1}{10})P= (\frac{1}{5000})P^2[/tex]
[tex]10P^2=5000P[/tex]
Dividing both sides by P and rearranging:
[tex]10P(P-500)=0[/tex]
This equation has two solutions: P = 0 and P = 500.
To determine which solution corresponds to the moment when the population is growing most rapidly, examine the second derivative. Taking the second derivative of the logistic differential equation, we have:
[tex]\frac{d^2P}{dt^2} = \frac{1}{10} - \frac{2}{5000}P[/tex]
Evaluating the second derivative at P = 0 and P = 500, we get:
[tex]\frac{d^2P}{dt^2}_{P=0} = \frac{1}{10} - \frac{2}{5000}(0)[/tex]
[tex]\frac{d^2P}{dt^2}_{P=0}= \frac{1}{10} > 0[/tex]
[tex]\frac{d^2P}{dt^2}_{P=500} = \frac{1}{10} - \frac{2}{5000}(500)[/tex]
[tex]\frac{d^2P}{dt^2}_{P=0}= -\frac{1}{10} < 0[/tex]
Since the second derivative is positive at P = 0 and negative at P = 500, the moment when the population is growing most rapidly occurs at P = 500.
Hence, the size of the population at the moment when the population is growing most rapidly is 500.
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Determine whether the lines L1 and L2 are parallel, skew, or intersecting. If they intersect, find the point of intersection.L1: x = 5-12t, y = 3+9t, z = 1-3tL2: x = 3+8s, y = -6s, z = 7+2s
Answers
The given lines L1 ⇒ x = 5-12t, y = 3+9t, z = 1-3t and L2 ⇒ x = 3+8s, y = -6s, z = 7+2s are parallel lines .
In the question ,
it is given that ,
the two lines are :
L1 ⇒ x = 5-12t, y = 3+9t, z = 1-3t
L2 ⇒ x = 3+8s, y = -6s, z = 7+2s
If the lines are intersecting then :
5 - 12t = 3 + 8s
8s + 12t = 2
4s + 6t = 1 ; .....equation(1)
and 3 + 9t = -6s
3t + 2s + 1 = 0
multiplying both sides by 2 ,
we get ,
6t + 4s + 2 = 0 ....equation(2)
Solving equation(1) and equation(2) , we get
3 ≠ 0 .
So , the lines are not intersecting .
For lines to be parallel , the cross product of their directions must be 0 .
So , [tex]\left|\begin{array}{ccc}i&j&k\\-12&9&-3\\8&-6&2\end{array}\right|[/tex]
On simplifying further ,
we get ,
⇒ 0i - 0j + 0k
= 0
So , the cross product is 0 , lines will be parallel .
Therefore , the lines L1 and L2 are parallel .
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One of the legs of a right triangle measures 2 cm and the other leg measures 7 cm. Find the measure of the hypotenuse. If necessary, round to the nearest tenth.
Answers
Answer:
Hypotenuse = 7.3 cm
Step-by-step explanation:
We can find the hypotenuse using the Pythagorean Theorem, which is:
[tex]a^2+b^2=c^2[/tex], where a and b are the legs of the right triangle and c is the hypotenuse.
By plugging in 2 and 7 for a and b, we have:
[tex]2^2+7^2=c^2\\4+49=c^2\\53=c^2\\7.2801=7.3=c[/tex]
Enter numbers to evaluate ‐6−13. ‐6−13= ‐6 + = Enter numbers to evaluate ‐6−(‐13). ‐6−(‐13)= ‐6 + =
Answers
The given expression evaluates to -19.
What is a expression? What is a mathematical equation? What do you mean by domain and range of a function?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.We have the following expression -
- 6 - 13
The given expression evaluates to -
x = - 6 - 13
x = - 19
Therefore, the given expression evaluates to -19.
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when an article is sold for 1200 there is 10% profit at what price should it be sold to gain 20%
Answers
Answer:
1309.10
Step-by-step explanation:
1200 = 110%
(1200/110)*120 = 1309.10
4-1 3/5 write as a mix number in simplest form
Answers
Answer:
Step-by-step explanation:
17/5
Answer:
2 and 2/5
Step-by-step explanation:
Solve for x: −8 < x − 1 < 5
−7 < x < 6
7 < x < 6
−7 > x > 6
7 > x > 6
Answers
Answer:
- 7 < x < 6
Step-by-step explanation:
- 8 < x - 1 < 5 ( add 1 to each interval )
- 7 < x < 6
Let F be any nonconstant vector field of the form F = f (x) i + g (y) j + h (z) k and let G be any nonconservative vector field of the form G = f (y, z) i + g (x, z)j + h (x, y) k. Indicate whether the following statements are true or false by placing ''T'' or ''F'' to the left of the statement. 1. G is incompressible 2. F is irrotational 3. G is irrotational 4. F is incompressible
Answers
1. G is incompressible- True
2. F is irrotational- True
3. G is irrotational- False
4. F is incompressible- False
Divergence and Curl In Mathematics, divergence is a differential operator, which is applied to the 3D vector-valued function. Similarly, the curl is a vector operator which defines the infinitesimal circulation of a vector field in the 3D Euclidean space .
So if we calculate for F:
F has a divergence potentially
divF = df/dx + dg/fy + dh/dz
But curl(F )= 0(all cross derivatives df/dy df/dz, dg/dx etc = 0)
For G
G has zero divergence.
divG = df/dx + dg/fy + dh/dz = 0 + 0 + 0 = 0
But it may have a curl.
curl(G) = df/dy may be non-zero
df/dz, dg/dx etc may all be non-zero
Now, we also know that if the divergence is zero, the vector field is incompressible and if the curl is zero, the vector field is irrotational, that is,
div = 0 = incompressible and
curl = 0= irrotational
Thus,
1. G is incompressible- True
2. F is irrotational- True
3. G is irrotational- False
4. F is incompressible- False
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Create a slope intercept equation with given information (3,1) m =0
Answers
Answer:
y = x - 2
Step-by-step explanation:
Since m = 0, what we have so far is y=x+b
We have a point, which is (3,1)
Substitute the x and y with the x and y values in the coordinate point to solve for b (y-intercept).
1=3+b
1-3=3+b-3 undo the 3 by subtracting
-2 = b
y = x + -2 simplify
y = x - 2
An isosceles triangle has an angle that measures 140°. What measures are possible for
the other two angles? Choose all that apply.
Recommendations
15⁰
70°
45°
20•
Answers
The possible value of other two angles will be 20 degree.
What are the types of triangle?
Basically, there are six different types of triangles in terms of lengths and measurements of triangle lines or angles. The sum of all interior angles of a triangle is always 180 degrees. This is called the angular summation of the triangle. Depending on the length of the sides, triangles can be divided into three types:
scale
Isosceles
equilateral
It is given that an isosceles triangle has an angle that measures 140°
We know that two sides of isosceles triangle are equal and by the property of triangle we know that angle opposite to equal sides are equal therefore remaning two angles of isosceles triangle will be equal.
Let the angles be x
By angle sum property of triangle
x + x + 140 = 180
2x = 180 - 140
2x = 40
x = 40/2 = 20
Therefore, the possible value of other two angles will be 20 degree.
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Which statement about Shawn’s line is true?
The slope of the line is 1/3
The y-intersect of the line is (4,0)
The y-interpect means Shawn ran 4 laps at week 0
The slope represents the average number of weeks it is Shawn to run laps
Answers
The slope represents the average number of weeks it is Shawn to run laps is true about Shawn's line.
Define slope.The ratio of the "vertical change" to the "horizontal change" between (any) two unique points on a line is used to compute slope. The ratio can also be written as a quotient ("rise over run"), which produces the same number for every two distinct points on the same line. A declining line has a negative "rise." The line might be useful, as determined by a road surveyor, or it might appear in a diagram that represents a road or a roof as a description or a design.
Given,
Graph to show number of taps he is scheduled to run a week.
True statement is,
The slope represents the average number of weeks it is Shawn to run laps.
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1/2 of the animals at the shelter are cats. If there are 318
animals at the shelter, how many are cats?
Answers
Answer:
159
Step-by-step explanation:
To find half of an amount, multiply the amount by 1/2 which is the same as dividing the amount by 2.
318 × 1/2 =
= 318 ÷ 2
159
-----------------------
2 | 318
- 2
------------
11
- 10
-------
18
- 18
------
0
318 × 1/2 = 318 ÷ 2 = 159
Yosef drove 11,190 miles last year. His truck's fuel efficiency averages 19 mpg, and the average cost of gas last year was $2.15 per gallon. Determine Yosef's average weekly fuel cost.
$32.12
$24.35
$28.55
$30.05
Answers
Yosef's average weekly fuel cost is $24.35.
How to find the the average weekly fuel cost?Yosef drove 11,190 miles last year. His truck's fuel efficiency averages 19 mpg, and the average cost of gas last year was $2.15 per gallon.
Yosef average weekly fuel cost can be computed as follows:
Yosef used 11190 / 19 = 588.95 gallons to drive 11190 miles.
Therefore, the average cost of gas last year was 2.15 dollars per gallon.
Therefore, Yosef's average weekly fuel cost would be as follows:
Yosef's average weekly fuel cost = 2.15 x 588.95 ÷ 52 = $1266.23684211 ÷ 52
Yosef's average weekly fuel cost = 24.350708502
Yosef's average weekly fuel cost = $24.35
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4x - 8y = -4
-2x + 8y = -2
Solve by elimination
Answers
Answer:
X=1 Y=0
Step-by-step explanation:
Multiply the second equation (-2x + 8y = -2) by 2 in order to get -4x+16y=-4.
Using this equation, you can eliminate the x
4x - 8y = -4
-4x+16y=-4.
=
8y=0
y = 0
Now, knowing that y=0, plug y into the second equation:
-2x+8(0)=-2
simplify
-2x=-2
lastly, divide both sides by -2
x=1
Which of the following is true?
Triangle B C D. The exterior angle at B is labeled 1 and the interior angle is labeled 2. Angle C has measure 70 degrees. The exterior angle at D has measure 130 degrees.
A. m∠BCD − m∠DBC = 10°
B. m∠BCD − m∠DBC = 20°
C. m∠BCD − m∠DBC = 60°
D. m∠BCD − m∠DBC = 80°
Answers
Answer:
answer :J LOOK THE DIAGRAM CAREFULLY AND UNDERSTAND
Answer:
A <c - <b = 10
Step-by-step explanation:
determine the equation of the line of the line of best fit from the data in the table on the right. x 4 5 6 7 10 y = 14 14 17 19 26
Answers
The equation for the line of best fit from the given data, will be y = 2.12 x + 4.42.
How to find the line of best fit ?The line of best fit would be the line that has an equal number of points above it, as the number of points beneath it.
Going by this definition, two points that would be on the line are (6, 17) and ( 7, 19 ).
The slope of this line would be:
= ( Y2 - Y1 ) / ( X 2 - X1)
= ( 19 - 17 ) / (7 - 6 )
= 2.12
The y intercept would be:
y = mx + c
19 = 2.12 (7 ) + c
c = 4.42
The equation of the line of best fit is then :
y = 2.12 x + 4.42
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7. Solve the proportion.
2/3=a/15
8. Solve the proportion.
4/7=44/m
Answers
Answer:
a=10
m=28
Step-by-step explanation:
2/3= 0.666666666666666
a/15=??????
try all numbers divided by 15 untill you found 0.666666666666666 which is =10/15
4/7=0.571428571428571
44/m=???????
do the same as the first one
it will be 44/28=0.571428571428571
A store bought a sofa wholesale for 200 and marked it up 15% when the sofa did int sell they reduced the price 15% show why the current price is not 200
Answers
Answer:
The current price of sofa is $195.50.
Step by Step explanation:Cost price of the sofa for the store = $200
Now, the store marked it up 15%.
So, marked price of sofa = $200 + 15% of $200
=200 + 30
=$230
Now, it is given that the sofa could not sell at this price. So, the store reduces its price by 15% now.
So, current price of sofa = $230 - 15% of $230
= 230 - 34.5
=$195.5
So, the current price of the sofa is $195.50.
An initial balance of $4,000 grows at a rate of 12.3% compounded quarterly. What is the balance after 5 years?
Answers
Answer:
7330.36
Step-by-step explanation:
A = P (1+i)^n
n = 4×5 = 20
i = 0.03075
12.3% / 4 = 3.075 × 1/100
= 0.03075
A = 4000 ( 1+ 0.03075 ) ^20
= 7330.36
It takes a bus 1 hour and 30 minutes to travel 42 miles.
Calculate the average speed of the bus in mph.
If your answer is a decimal, give it to 1 d.p.
Answers
28 mph is the average speed of the bus in mph.
What is speed?
The speed of a change in an object's location in any direction. The distance traveled relative to the time it took to travel that distance is how fast something is moving.
Meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph) are the most popular speed units (mph). The distance an object covers in a given amount of time is its speed. Speed = distance x time is the speed formula. The meter per second, also known as the m/s or ms-1, is the SI unit of velocity.
time = (1+ 1/2)hr = 3/2 hr = 1.5 hr
distance = 42 miles
average speed = total distance/total time
42/1.5 = 28 mph
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ING
DO
S
DO
Here's the revenue and expenses for the month. Calculate whether Mia had a profit or loss.
REVENUE
DOG FOOD
$3,500
CAT FOOD
$2,100
PET TREATS
$1,200
PET SUPPLIES $2,750
TOTAL
$9,550
JANUARY ACCOUNTS
FIXED EXPENSES
RENT
$2,000
SALARIES
$2,000
UTILITIES
$1,000
PRODUCT STOCK $4,000
TOTAL
$9,000
$ X
VARIABLE EXPENSES
NEWSPAPER AD $200
TOTAL
$200
ENTER MIA'S TOTAL PROFIT/LOSS FOR THE MONTH IN THE BOX BELOW, THEN CLICK SUBMIT.
SUBMIT
Answers
9500-9000-200
9550-9200
Profited
$350
Brainly pls
Maria is making an apple pie. She needs 1/4 cup of sugar for each pie Maria has 2 1/2 cups of sugar how many pies can she make
Answers
The number of cups she can make is 2 cups
How to determine the number of cups she can makeFrom the question, we have the following parameters that can be used in our computation:
Cups of sugar needed = 1/4
Cups of sugar available = 1/2
Assume there exist a proportional relationship between the cups
The number of cups she needs can be calculated using the following equation
number of cups = (1/2)/(1/4)
Evaluate the quotient
number of cups = 2
Hence, the cups is 2 cups
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“According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answer to three decimal places, for example: 0.123]”
Answers
A probability is a numerical representation of the likelihood or chance that a specific event will take place.
How to find the probabilities?12% of peanut M&M’s = brown
15% = yellow
12% = red
23% = blue
23% = orange
15% = green
Here, Probability of an event is represented as P
a) P(not green) = 100% - 15%
= 85%
= 0.85
b) P(yellow or red) = 15% + 12%
= 27%
= 0.27
c) P(three blue) = 0.23*0.23 *0.23
= 0.012 (rounded to 3 decimal places)
d) P(not green if you choose 6 )= [tex](0.85)^{6}[/tex]
= 0. 377
e) P(at least 1 green if you choose 6 ) = 1 - 0.377
= 0.623
What is probability?Probability is the ability to happen. The subject of this area of mathematics is the occurrence of random events. From 0 to 1 is used to express the value. To forecast how likely occurrences are to occur, probability has been introduced in mathematics. The degree to which something is likely to happen is essentially the definition of probability. This is the fundamental theory of probability, which is also applied to the probability distribution, and from which you will discover the likelihood of results for a random experiment. We must first determine the total number of outcomes in order to calculate the probability that a single event will occur.To learn more about probability, refer:
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what IS 1/2 as a percent help pls SOS
Answers
Answer:
50%
Step-by-step explanation:
numerator divided by denominator
1 divided by 2 = .5
.5 x 100 = 50%
select the spreadsheet formula that would correctly calculate the average (mean) of the following values: 25, 50, and 75.
Answers
The spreadsheet formula that would correctly calculate the average (mean) of the given values is: (25 + 50 + 75) / 3 = 50.
What is an average?An average is a single number taken as representative of a list of numbers, generally the sum of the numbers divided by how many numbers are in the list (the arithmetic mean).
What is the formula to calculate the average?The formula to calculate the average of given numbers is equal to the sum of all the values divided by the total number of values. Average = Sum of Values / Number of Values.
So, in this case:
Values: 25, 50, 75
Number of Values: 3
Thus, the average:
Sum of Values / Number of Values = (25 + 50 + 75) / 3 = 50
Hence, the spreadsheet formula that would correctly calculate the average (mean) of the given values is: (25 + 50 + 75) / 3 = 50.
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Elvia has a bag of snack mix that contains 5 cereal pieces, 4 peanuts, 5 pretzels, and 1 bagel chip. Suppose that she is equally likely to pick any individual object from the bag. What is the probability that Elvia will randomly pull a pretzel from the bag?
Answers
Answer: 33%
Step-by-step explanation: a third of the items in the bag are pretzels.
Find the sum of 3x + 2 and 8x
Answers
then just add the left over 2 to the equation to get
11x+2
Write the standard form of the quadratic function whose graph is a parabola with the given vertex and that passes through the given point. (Let x be the independent variable and y be the dependent variable.)
Vertex: (2, 3); point: (0, 2)
Answers
[tex]~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\begin{cases} h=2\\ k=3 \end{cases}\implies y=a(x-2)^2 +3\hspace{5em}\textit{we also know that} \begin{cases} x=0\\ y=2 \end{cases} \\\\\\ 2=a(0-2)^2 + 3\implies -1=a(-2)^2\implies -1=4a\implies \cfrac{-1}{4}=a \\\\\\ ~\hfill {\Large \begin{array}{llll} y=-\cfrac{1}{4}(x-2)^2 + 3 \end{array}} ~\hfill[/tex]