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Gemiola [76]
3 years ago
7

If f(x)=20, what does x equal?

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
3 0

Answer:

20

Step-by-step explanation:

X=20 because f (20) would also be 20. Since we don't know the value behind 20, we would suppose x is the value. The original equation is now f(x)=x. If we do f(20)=x we would get that (since x is being substituted) f(20)=20.

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Solve the perimeter for an isosceles triangle, p=2a+b, for a.
Snowcat [4.5K]

Answer:

a= 1/2p-b

Step-by-step explanation:

p=2a+b

divide by 2 on both sides

1/2 p = a+b

subtract b from both sides

1/2 p - b = a

flip equation (not needed, just personal preference)

a= 1/2p-b

(Sorry if I didn't understand well enough and got it wrong)

5 0
3 years ago
a car travels from A to city B. for the first 30 minutes, the car travels at the constant speed of 45 mph. the car speed up and
Masteriza [31]

Answer:217.5 miles

Step-by-step explanation:

6 0
4 years ago
Claire has a hot tub with a diameter of 7 feet. She wants to purchase a cover to protect the hot tub. What is the area
harkovskaia [24]

Answer:

The area  of the cover for the hot tub must be:

  • <u>38 square feet</u>.

Step-by-step explanation:

First, you must understand that since a hydromassage tub is mentioned and the diameter, it is assimilated that it is round in its upper part, which is why the formula is used to find the area of a circle:

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Since the diameter is mentioned, it can be replaced in the formula:

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7 0
3 years ago
Read 2 more answers
(x2 + 17x + 63) ÷ (x + 8) = A. x + 10 remainder –9 B. x + 9 remainder – 5 C. x + 9 remainder –9 D. x + 7 remainder –10
Lady_Fox [76]
Thank you for posting your question here in brainly. The answer to the above equation is letter C which is <span> x + 9 remainder –9. Please see below solution:

x2 + 17x + 63 / x + 8 = x + 9 r-9
x2 + 8x 
        9x   + 63
        9x   + 72 
                 -9</span>
5 0
3 years ago
Read 2 more answers
An animal shelter has 7 puppies. If the puppies are 28% of the total dog and cat population, how many dogs and cats are in the a
sleet_krkn [62]
79 is the answer I believe.
4 0
3 years ago
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