3 years ago

Given f(x) = -10x + 45, find x when f(x) = 15.

Mathematics

1 answer:

fenix001 [56]3 years ago

3 0

Answer:

3 =x

Step-by-step explanation:

f(x) = -10x + 45

f(x) = 15

15 = -10x +45

Subtract 45 from each side

15-45 = -10x+45-45

-30 = -10x

Divide each side by -10

-30/-10 = -10x/-10

3 =x

You might be interested in

||2x+1|+6|>=0 plz answer asap

nirvana33 [79]

3x + 6 >=0 that's the equation and yes it would be greater

6 0

3 years ago

When x+2 = 1/5y is written in standard form, what is the value or B

Ket [755]

Answer:

B=-1

Step-by-step explanation:

Standard form is Ax+By=C.

In this case, Ax is x, By is 1/5y, and C is +2.

To isolate the 2 (the C), subtract x from both sides of the equation:

x+2=1/5y

-x -x

2=-x+1/5y.

Now, the value of B, the x value, is -1.

4 0

3 years ago

Solve: 3x−5 = 9. A. x = −3 B.x = 2 C.x = 7 D.x = 8

Alina [70]

Answer:

Step-by-step explanation:

$3x-5=9$

$3x-5+5=9+5$

$3x=14$

$\frac{3x}{3}=\frac{14}{3}$

$x=\frac{14}{3}$

x ≈ 4.66667

4 0

3 years ago

Read 2 more answers

Approximate the square root to the nearest integer. 37

REY [17]

6.083 would be the answer

8 0

3 years ago

Read 2 more answers

You start at (6, 7). You move up 2 units. Where do you end?

Vikki [24]

Answer:

(6,9) nice

Step-by-step explanation:

8 0

3 years ago