Pre Calc Question for one of my classes

Mathematics

1 answer:

Tatiana [17]2 years ago

5 0

Answer:

Step-by-step explanation:

f(x) is like y in a linear equation. There is one major difference. F(x) tells you what to substitute on the right every time you see an x.

f(a) = -3a + 7

f(b) = -3b + 7

For this question a and b have values. Now work with the right side only. This is the quickest way to get the answer, but it is only marginally correct.

f(a) = -3(-8) + 7 = 24 + 7 = 31

f(b) = -3(7) + 7 = -21 + 7 = - 14

f(a) + f(b) = 31 - 14 = 17

f(a) - f(b) = 31 - (-14) = 31 + 14 = 45

You might be interested in

What is 50% of 33 show work please

olganol [36]

Answer:

16.5

Step-by-step explanation:

50 x 33

-------------

100

= 16.5

8 0

2 years ago

A baker made 9 cupcakes 4 people want to share them equally how many will each person get

ValentinkaMS [17]

Everyone would get 2 1/4 cupcakes because if you split up each cupcake by 4, (In four different pieces) everyone would get 9/4 slices. Change to a mixed number to get 2 1/4

8 0

3 years ago

A horizontal force of 480 n is applied to a stationary wooden box in one direction and a 600 n horizontal force is applied in th

maksim [4K]

Answer:

Step-by-step explanation:

In a static position, the sum of the forces is always 0.

so:

F1 = 480 N

F2 = -600 N

F3 = ?

F1 + F2 + F3 = 0