Step-by-step explanation:

Answer:
g(f(x)) = - x² + 4
Step-by-step explanation:
To evaluate g(f(x)), substitute x = f(x) into g(x), that is
g(f(x))
= g(- x² - 1)
= - x² - 1 + 5
= - x² + 4
Answer:
The equation is:
and the number is 72.
Step-by-step explanation:
We have to use mathematical notation to convert the given statement into an equation. As we don't know the exact value of number, we have to use a variable in place of the number.
Let x be the required number then
"A number decreased by 7"

"and then divided by 5"

" is 13."

For solving, multiplying both sides of equation by "5"

Adding 7 on both sides of equation

Hence,
The equation is:
and the number is 72.
Answer:
-6
To find the average, you first have to add each of your numbers.
(-4)+(-8)+(-12)+(0)+(-6)
-30
Next, you have to divide it by the number of terms
-30/5
Your answer is -6
3:6 3,6,9 6,12,18,24
9:24. ~~ ~~
Yes it is equivalent because if you divide 9:24 with 3 it will equal 3:6 and if you keep adding with 3:6 buy it's self it will eventually aqualung 9:24