MATHEMATICS MIDDLE SCHOOL

NEED HELP FAST!!!! Marnie packed 18 boxes in 3 hours, which was 72% of the total number of boxes she had to pack. How many boxes did Marnie have to pack?  
A. 25  
B. 13  
C. 216  
D. 54

Answers

Answer 1
Answer:

The total number of boxes that Marnie had to pack was 25.

What are percentages?

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate the percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word percent means per 100. It is represented by the symbol “%”

Given here: Marnie packed 18 boxes in 3 hours, which was 72% of the total number of boxes she had to pack.

Let the total number of boxes that she packed is x then we have

72/100 ×x=18

x=18×25/18

x=25

Hence, The total number of boxes that Marnie had to pack was 25.

Learn more about percentages here:

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Answer 2
Answer: 18 boxes = 72% of the total number.

let the total number be x.

72% of the total number  = 18

(72/100)*x = 18

0.72x = 18

x = 18/0.72

x = 25


So she had to pack 25 boxes.  Option A.

Hope this explains it.

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Need #47 and #48 asap!!
20 pts!!

Answers

Answer:

47-Step-by-step explanation:

X=121 because they are vertical angles

48- first divide 96 by 6 together the surface area of each side which is equal 16 then to find the length and the width find the square root of 16 which is 4 because it is a cube the length/width/height are all equal to four. So do 4 x 4 x 4 to find the volume of one cube. Which is equal to 64 then multiple by 8 to get the total volume 512cm^3

Can you solve 2/3(x+13)=22

Answers

\frac { 2 }{ 3 } \left( x+13 \right) =22\n \n \frac { 3 }{ 2 } \cdot \frac { 2 }{ 3 } \left( x+13 \right) =22\cdot \frac { 3 }{ 2 }

\n \n x+13=\frac { 66 }{ 2 } \n \n x+13=33\n \n x=33-13\n \n x=20
(2)/(3)(x+13)=22\n2(x+13)=66\n2x+26=66\n2x=40\nx=20

How do I find the perimeter of a triangle?

Answers


"Perimeter" is the distance all the way around it.

To find the perimeter of a triangle, collect these numbers:

-- length of one side
-- length of another side
-- length of the remaining side .

Add up those three numbers.  Their sum is the perimeter of the triangle.


Perimeter is the distance around the object (in this case a triangle) and is found by adding up the length of each side

If a test has 95 questions how many points would each question be worth? Using your answer how many could you miss without going below an 80?

Answers

One can miss up to 24 questions and still achieve an 80% score.

In order to calculate the points each question is worth and determine how many questions you can miss while maintaining an 80% score.

To find the points each question is worth, we divide the total points by the number of questions. Let's assume the test is out of 100 points, which is a common scale. Therefore, each question would be worth \((100)/(95)\) or approximately 1.05 points.

Now, let's determine how many questions you can miss while still achieving an 80% score (which is 80 out of 100 points). We'll set up an equation to solve for the maximum number of questions you can miss, denoted by "x":

\(80 = (100 - x)/(95) * 100\)

To solve for "x," first, we'll simplify the equation:

\(80 = (10000 - 100x)/(95)\)

Next, we'll isolate "x" by multiplying both sides by 95:

\(7600 = 10000 - 100x\)

Now, isolate "-100x" by subtracting 7600 from both sides:

\(-2400 = -100x\)

Finally, divide both sides by -100 to solve for "x":

\(x = (-2400)/(-100) = 24\)

So, you can miss up to 24 questions and still achieve an 80% score.

To know more about Score here

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100/95= 1.05. Each question worth 1.1 rounded. You could miss 19 but if you miss 20 you go under 80.

the east side of mrs. hammonds ranch is 475 meters longer than the west side the west side is 2.6 km long what is the length of the east side in kilometer

Answers

there is 1000 meters in one kilometer
so 2.6 in meters is 2600 so
2600+475= 3075
its 3075 meters divide by 1000 to equal
3.075 kilometers 
hope it helps
East side = West side + 475 m

East side = 2.6 km + 475 m

475 m = 475/1000 m = 0.475 km

East side = 2.6 km + 0.475 km

East side = 3.075 km.

An angle is bisected by a segment forming two new angles <1 and <2. find m

Answers

Answer:

m∠WUV = 24°

Explanation:

An angle bisector is a line that divides an angle into two equal parts

We are given that:

UP is an angle bisector forming angles 1 and 2

This means that:

m∠1 = m∠2

We are given that:

m∠2 = 12°

Therefore:

m∠1 = m∠2 = 12°

Now, we want to get m∠WUV:

∠WUV can be written as the summation of angles 1 and 2

m∠WUV = m∠1 + m∠2

m∠WUV = 12° + 12°

m∠WUV = 24°

Hope this helps :)
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