3 years ago

F (x)=4x-7 when f (x)=8

1 answer:

6 0

Since both are equivalent to f(x), 4x-7 must equal 8
4x-7=8

Add 7 to both sides
4x= 15

Divide both sides by 4
x=15/4

Final answer: x=15/4

You might be interested in

The experimental probability of rain in a certain town is 20 percent. In the next 45 days, how many days can one expect it to ra

Hatshy [7]

hope this helps :)

8 0

3 years ago

There are twice as many Robins has blue jays and their 21 altogether how many blue jays are there

Lunna [17]

R + b = 21
2b = r

now we sub eq 2 into eq 1
r + b = 21
2b + b = 21
3b = 21
b = 21/3
b = 7

2b = r
2(7) = r
14 = r

so there are 7 bluejays (b) and 14 robins (r)...for a total of 21

5 0

3 years ago

What is the weekly profit? Plz help.!

UkoKoshka [18]

Answer:

901$

Step-by-step explanation:

8 0

2 years ago

The polynomial 6x2 x − 15 has a factor of 2x − 3. what is the other factor? 3x − 5 3x 5 4x − 5 4x 5

Andrew [12]

6x^2 + x - 15 = 6x^2 - 9x + 10x - 15 = 3x(2x - 3) + 5(2x - 3) = (3x + 5)(2x - 3)
Therefore, the other factor is 3x + 5.

8 0

3 years ago

Read 2 more answers

Select the best possible first step to solving the system by first eliminating the x variable. 3x − 9y = 6 2x − 11y = 6

Klio2033 [76]

The first step would be to add 3x and 2x i believe but I am not sure

5 0

3 years ago