MATHEMATICS MIDDLE SCHOOL

You increase the size of a page by 50%. Then you decrease it by 50%. What is the size of the page now?

Answers

Answer 1
Answer:
We can't tell what size the page is now, because you never told us
what size it was before all the shenanigans started.  All you gave us
was a couple of ratios.

And you didn't even tell us WHAT was increased and decreased ...
was it the length of the sides, or was it the area of the page ?
__________________________________________

If it was the length of the sides ...

Let's say the page was  8"  high and  4"  wide.

Increase lengths by  50% :     Now it's  12"  high and  6"  wide.

Decrease lengths by  50% :   Now it's  6"  high and  3"  wide.

     The sides are now  3/4  as long as they started out,
     and the area is  9/16  of what it started out.
Answer 2
Answer:

Answer:

The answer is smaller than started with

Step-by-step explanation:

I dont know how to do it but I had the question on imagine math and I guessed and got it right

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What is 72 tens - 12tens

Answers

Solve:-

72 tens - 12 tens
72 tens - 12 tens = 72 - 12 = 60
72 tens - 12 tens = 60 tens 

Which strategies can be used to solve this problem? The population of Grayville is 2,345 people. Rosetown has 1,123 fewer people than Grayville. Newtown has 1,020 more people than Rosetown. How many people live in Newtown?

Choose all answers that are correct.

A.
Translate into an equation.
2,345 – 1,123 + 1,020 = p

B.
Work backward.
Add 1,020 to the population of Rosetown (1,123). Subtract this from the population of Grayville (2,345).

C.
Use logical reasoning.
Start with the population you already know (Grayville = 2,345). Subtract Rosetown's 1,123 fewer people than Grayville. Add 1,020 to this amount because Newtown has 1,020 more people than Rosetown.

D.
Draw a diagram.
Draw 3 large circles. Write 2,345 in the first circle and write 1,123 in the second circle. Add the 2 amounts and subtract 1,020 from the sum. Write this amount in the third circle.

Answers

Both A. and C. will give you the same correct answer: 2,242 people. They're the same problem C. is just written longer :) hope this helps
A.2,345 -1123 +1020 ______

78 is 15% of what #? 1. | 3x - 2 | = 8 and | x + 1 | = 1
What value of x satisfies both equations above?
1. -1
2. 2
3. 1
4. -2

What is the slope of the line described by the 3y - 4x + 5 = 0 equation?
1. 4/3
2. -5/3
3. 5/4
4. 3/4

Please help.. Show work for ALL problems please.

Answers

1. 78 = 0.15x
    78 / 0.15 = x
    520 = x.....so 78 is 15% of 520

2. | 3x - 2 | = 8                               | x + 1 | = 1

3x - 2 = 8      -(3x - 2) = 8            x + 1 = 1          -(x + 1) = 1
3x = 8 + 2      -3x + 2 = 8             x = 1 - 1           -x - 1 = 1
3x = 10           -3x = 6                  x = 0                 -x = 2
x = 10/3           x = -2                                             x = -2

ur answer is : x = -2

3. 3y - 4x + 5 = 0
    3y = 4x - 5
      y = 4/3x - 5/3
   slope = 4/3
    

Find the radius of a circle if a central angle of π intercepts an arc of 32 inches. Round to the nearest tenth.a. 3.1 in.
b. 10.2 in.
c. 100.5 in.

Answers

Answer:  b. 10.2 in.

Step-by-step explanation:

We know that the formula to calculate the length of arc is given by :-

l=\theta* r

Given : The central angle : \theta=\pi

The length of arc : l=32\text{ inches}

\Rightarrow32=\pi* r\n\n\Rightarrow\ r=(32)/(\pi)=10.18591635\approx10.2\text{inches}

Hence, the  radius of the circle =10.2 inches.

Points V, W, X, Y, and Z are graphed on a number line. The coordinate of point V is –8. What points are at a distance of 5 units from point V?

Choose all answers that are correct.

A.
W = –13

B.
X = –8

C.
Y = –3

D.
Z = 3

Answers

Using the absolute value:
|x-(-8)|=5\n|x+8|=5\nx+8=5 \vee x+8=-5\nx=-3 \vee x=-13

A and C

Find the equation of the line that goes through the points (4, –1) and (2, –5).Use slope formula,m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction,to find the slope of a line that passes through the points.

Answers

Answer:

y = 2 x - 9

Step-by-step explanation:

slope = difference of y / difference of x

m = (-5 - (-1)) / (2 - 4) = -4 / -2 = 2

pass point (4 , -1)

y = mx + b         b: y intercept

b = y - mx = -1 - 2 x 4 = -9

equation: y = 2 x - 9
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