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2 years ago

Identify the expression equivalent to 2x + 8 by substituting x = 7 and x = 5.

Mathematics

2 answers:

RUDIKE [14]2 years ago

6 0

Answer:

C is the answer because the expression pulled apart is just an addition problem between two parenthesis. I hope this helps!

Step-by-step explanation:

Nat2105 [25]2 years ago

4 0

Answer:

the answer is C ;P

Step-by-step explanation:

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the diameter of a circle is 12yd. find the exact area and circumference of the circle. write your answers in terms of pie

Scorpion4ik [409]

So,

The area of a circle is $A = \pi *radius^{2} \\and\\Radius = Diameter \div 2\\\\So\\A = \pi * 6^2\\\\A = 36\pi$

For Circumfrence

$C = \pi * diameter\\C = 12\pi$

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3 years ago

15% of the toddlers in a preschool class drink water with their lunch. How many toddlers are in the class if 3 drink water with

Naddika [18.5K]

15%=3
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2 years ago

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Use the zero product property to find the solutions to the equation x^2 + x -30=12

Alla [95]

Answer:

The solutions are x = -7, 6.

Step-by-step explanation:

To find the solutions, move everything to one side of the equation so the equation is equal to 0. Then factor. Set the factors equal to 0 and solve for x.

$x^2 + x - 30 = 12\\x^2 + x -42=0\\(x+7)(x-6) = 0$

x+7 = 0

x = -7

and

x-6 = 0

x = 6

The solutions are x = -7, 6.

6 0

3 years ago

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3. If a customer has $50.00 to spend, for how many hours can they rent the bicycle?

olya-2409 [2.1K]

Answer:

4 hours

Step-by-step explanation:

Alright, so Steve has $50 in his pocket. He wants to rent a bike for the maximum amount of time possible with his money. It costs him $12 per hour to rent a bike.

To solve this problem use simple arithmetic:

($50/$12=4.16)

So Steve is able to rent the bike for 4.16 hours, but we aren't done yet. Steve cannot purchase 16% of an hour, he can only buy FULL hours, so with his $50 , the maximum amount of time he can buy is 4 hours!

Let me know if you need any further explanations :)

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2 years ago

Which of the following is the sum of the polynomials 5x^2-4x+1 and -3x^2+x-3??

Katyanochek1 [597]

5x^2-4x+1 + -3x^2+x-3= 2x^2-3x-2

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2 years ago