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2 years ago

Help me please

Mathematics

1 answer:

barxatty [35]2 years ago

7 0

Answer: A

Step-by-step explanation:

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A circle has a diameter of 15 feet. What is the circumference of the circle? (Express your answer using π.)

insens350 [35]

B

The formula for circumference is $\pi$ d, or Pi times diameter

5 0

3 years ago

Simplify the rational expression. state any restrictions on the variable. n^4-11n^2+30/n^4-7n^2+10

Andrej [43]

For this case we have the following expression:
 $\frac{n ^ 4-11n ^ 2 + 30}{ n ^ 4-7n ^ 2 + 10} 

$
 We are going to make the following change of variables:
 $x = n ^ 2
$
Rewriting the expression we have:
 $\frac{(x ^ 2-11x + 30)}{(x ^ 2-7x + 10)} 

$
Factoring the expression we have:
 $\frac{(x-5) (x-6)}{(x-5) (x-6)} 
$
Canceling similar terms we have:
 $\frac{x-6}{x-2} 
$
Returning the change we have:
 $\frac{n ^ 2-6}{n ^ 2-2} 

$
 The resctrictions of the function are those that make the denominator equal to zero.
We have then:
 $n ^ 2-2 = 0

n = +/- \sqrt{2} 
$
 Answer:
The simplified expression is:
 $\frac{n ^ 2-6}{n ^ 2-2}$
The restrictions are:
 $n = \sqrt{2} 
$
$n = - \sqrt{2}$

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3 years ago

How is 40 gummy bears for 5 dollars written as a fraction?

Marina86 [1]

40/5 because to find the answer you would divided them

8 0

2 years ago

Read 2 more answers

2. The sum of three consecutive integers is 48. What are the three integers?

Natasha2012 [34]

Answer: 15, 16, 17

Step-by-step explanation: you have to divide 48 by 3 when you do this then you get the center number in this case 16 so all you have to do now is add the lower number (15) and the higher number (17) and add and they will equal 48

hope this helps please mark brainliest if it helps

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2 years ago

This is a dumb question but what is 68 time 100

Whitepunk [10]

68 x 100 = 6,800

Hope this helps

-AaronWiseIsBae

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2 years ago

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