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schepotkina [342]
2 years ago
13

Peter increased the amount of crunches he did from 32 to 36. By what percentage did Peter increase the amount of crunches he com

pleted?
A 30%
B 12.5%
C 20%
D 22.5%
Mathematics
1 answer:
gavmur [86]2 years ago
7 0

9514 1404 393

Answer:

  B 12.5%

Step-by-step explanation:

The percentage change is calculated as ...

  % change = ((new value)/(old value) -1) × 100%

  = (36/32 -1) × 100% = 1/8 × 100% = 12.5%

Peter increased his crunches by 12.5%.

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7 cm

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In a circle, what is the ratio of the circumference to its diameter?
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The volume of a rectangular prism is 2,100 cm cubed , with length 25 cm and width 12 cm. What is the height, in cm?
BabaBlast [244]
This is easy the answer is 7
5 0
2 years ago
Find the domain of the function algebraically:<br><br> <img src="https://tex.z-dn.net/?f=R%28x%29%3D%5Cfrac%7Bx%7D%7Bx%5E%7B2%7D
BigorU [14]

The domain of the function is all real numbers except 2 and -1

Step-by-step explanation:

Domain is the set of inputs of a function on which the function is defined.

Given function is:

R(x) = \frac{x}{x^2-x-2}

In case of a function involving fraction, the function is undefined if the denominator is zero so in order to find the domain of the function algebraically , we have to find the values on which the function will be undefined

x^2-x-2 = 0\\x^2-2x+x-2 = 0\\x(x-2)+1(x-2) = 0\\(x+1)(x-2) = 0\\x+1 = 0 => x=-1\\x-2=0 = > x=2

The function will be undefined on x=-1 and x=2

So,

The domain of the function is all real numbers except 2 and -1

Keywords: Domain, functions

Learn more about domain and functions at:

  • brainly.com/question/2150928
  • brainly.com/question/2154850

#LearnwithBrainly

7 0
3 years ago
I need the answer please
lutik1710 [3]

5 inches : 2 feet

          ÷2.5

120 inches : 48 feet

              ÷2.5

answer: 48 feet

4 0
3 years ago
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