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vagabundo [1.1K]
3 years ago
9

Mary lost 30 pounds. Before her diet she weighed 180 pounds. What is the percent of change.

Mathematics
1 answer:
Lelu [443]3 years ago
5 0

Answer:

percentage change= 500%

Step-by-step explanation:

After diet the weight reduced = 30 pounds

Before diet her weight = 180 pounds

percentage change = { (180 - 30) ÷ 30 } × 100

                             =  ( 150 ÷ 30) × 100

                              = 5 × 100

                               = 500 %

∴percentage change= 500%

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Two numbers x and y, have a sum of 23 and a difference of 7. x is greater than y
Verizon [17]

Answer:

Below in bold.

Step-by-step explanation:

Use the elimination method:

a.   x + y = 23

     x - y = 7

b.  Adding the 2 equations eliminates y, so we have

     2x = 30

        x = 15.

     Substitute x = 15 in equation a:

      15 + y = 23

         y = 23 - 15

        y =  8.

       Answer x = 15, y = 6.

7 0
3 years ago
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WILL GIVE A BRAINLIEST IF UR RIGHT PLEASE HELP!!
Likurg_2 [28]
3  comes in the range  3 =< x <= 12

so  its x + 4 = 3 + 4 = 7

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6 0
4 years ago
Read 2 more answers
If 5x+15=45 what is the value of x
icang [17]

Answer:

X=6

Step-by-step explanation:

5x6=30+15

5 0
4 years ago
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What is the inverse of the function 9y - 6 = 3x ?
IgorC [24]

Answer:

Option (2)

Step-by-step explanation:

Given function is,

9y - 6 = 3x

y = \frac{3x+6}{9}

To find the inverse of the given function,

1). Substitute x in place of y and y in place of x.

x = \frac{3y+6}{9}

2). Now we have to solve this equation for the value of y.

9x = 3y + 6

3y = 9x - 6

y = (3x - 2)

Therefore, inverse of the given function is y = (3x - 2)

Option (2) will be the answer.

8 0
4 years ago
How do you answer this?
BaLLatris [955]

(b)  \: y = {(( - x) + 2)}^{2}  - 5 =  {( - (x - 2))}^{2}  - 5 =  {(x - 2)}^{2}  - 5

Shift of 2 units right and 5 units down

4 0
3 years ago
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