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REY [17]
3 years ago
5

7. Which of the following is true?

Mathematics
1 answer:
san4es73 [151]3 years ago
6 0

Answer:

The horizontal line test is used to determine if a functions inverse will be a function. You will compose the functions (that is, plug x into one function, plug that function into the inverse function, and then simplify) and verify that you end up with just "x". Here's what it looks like: Determine algebraically whether f (x) = 3x – 2 and g(x) = (x + 2)/3 are inverses of each other.

Use the horizontal line test to determine if a function is a one-to-one function.

If ANY horizontal line intersects your original function in ONLY ONE location, your function will be a one-to-one function and its inverse will also be a function.

hope this helps

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Talia tossed a penny many times. She got 20 heads and 80 tails. She said the experimental probability of getting heads was 20 80
iragen [17]

Answer:

the experimental probability is 1/5

Step-by-step explanation:

This is because one to calculate the experimental probability one has to divide the favorable events over the possible events, and those that Talia did were the favorable events divided the non-favorable events

20 heads and 80 tails

Faborable events = 20

Possible events = 20 + 80 = 100

20/100 = 1/5

5 0
3 years ago
Can anyone help? Will give Brainly + 22 pts .
inna [77]

Answer:

 

0.08*x   + 0.09*(9000-x) = 750    dollars

0.08x + 810 - 0.09x = 750

-0.01x = 750 - 810 = -60  ====>  x = %28-60%29%2F%28-0.01%29 = 6000.

Answer.  $6000 was invested at 8%.  The rest   9000-6000 = 3000 dollars were invested at 9%.

Check.   0.08*6000 + 0.09*3000 = 480 + 270 = 750 dollars.   ! Correct !

have a great day

hope this help

4 0
3 years ago
In 4 years time a mother will be three times as old as her son. Four years ago she was five times as old as her son. Find their
borishaifa [10]
Son is 12, mother is 44
4 0
3 years ago
In triangle ABC, m2 C = 90°, c = 17, and a = 8, then which of the following is the measure of side b?
const2013 [10]
15 is the correct answer.

Pythagoras theorem is used to find the hypothenuse of a right triangle. (m2 C=90 meaning it’s a right triangle)

a^2+b^2=c^2

8^2+b^2=17^2

After finishing the equation, you get 15.
8 0
4 years ago
Tysm 30 points!! pls answer correctly
ira [324]
The answer is 4 pensioners
5 0
3 years ago
Read 2 more answers
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