1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dolphi86 [110]
3 years ago
9

F(x)=2x -7, What is x when f(x)=-15?

Mathematics
1 answer:
OverLord2011 [107]3 years ago
6 0

Answer:

x = -4

Step-by-step explanation:

Plug in -15 into the equation:

f(x) = 2x - 7

-15 = 2x - 7

Solve for x:

-15 = 2x - 7

-8 = 2x

-4 = x

You might be interested in
What is the value of -3|15 -s|+2s^3 when s=-3
gayaneshka [121]
-3|15-s|+2s^3\\\\\text{substitute the value of s = -3 to the expression}\\\\-3\cdot|15-(-3)|+2\cdot(-3)^3=-3\cdot|15+3|+2\cdot(-27)=-3\cdot|18|-54\\\\=-3\cdot18-54=54-54=0
3 0
3 years ago
2. Given f(x) = 6(8 - x)+5
son4ous [18]

Answer:

a) Find the value of the function when x  = -2

b) we get f(-2)=65

Step-by-step explanation:

We are given the function f(x)=6(8-x)+5

a) What does the notation f(-2) mean?

The notation f(-2) means that we have to put x = -2 in the given function of f(x) and find the value of the function when x  = -2

b) What is the value of f(-2) ?

We need to find the value of f(-2)

f(x)=6(8-x)+5

Put x = -2

f(-2)=6(8-(-2))+5\\f(-2)=6(8+2)+5\\f(-2)=6(10)+5\\f(-2)=60+5\\f(-2)=65

So, we get f(-2)=65

5 0
3 years ago
PLEASE HELP <br>Explain how to find the average rate of change between n=3 and n=9.​
RoseWind [281]
Add 3 and 9 together divided by 2 ....u should get 6
7 0
3 years ago
Read 2 more answers
Calculate the area of this figure to the nearest hundredth. use 3.14 to approximate pi
zaharov [31]

Answer:

49.132 m²

Step-by-step explanation:

Area of a triangle=1/2(base×height)

Area=1/2(6×8)

Area=24 m²

Now

Area of semi circle=πr²/2

Area=(3.14)(8÷2)²/2

Area=(3.14)(4)²/2

Area=(3.14)(16)/2

Area=50.265/2

Area=25.132 m²

Now

Total area=area of triangle+semi-circle

Total area=24+25.132

Total area=49.132 m²

3 0
3 years ago
Read 2 more answers
Find the area of this figure.
AlladinOne [14]

Answer:

216 cm^2

Step-by-step explanation:

Alright, first lets knock out the rectangle. This would be found by doing L * H. For the length it would be 14. For the height, it would be 12.

14 * 12 = 168

Next with the triangle, it has a length, or "base" of 8 and the same height of 12. For a triangle, do (B * H) / 2 as the formula.

(8 * 12) / 2

96 / 2

48

Now, combine these two values to get the total:

168 + 48 = 216 cm^2

All done!

7 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP MEEEEEE​
    14·2 answers
  • Write 405,612 in expanded form
    6·2 answers
  • What is the value of the expression? <br><br>-13 - (-9)​
    13·2 answers
  • What is the solution of -2x+6x=24
    6·2 answers
  • If y = 4x - 7 were changed to y = 12x + 1, how would the graph of the new function compare with the original?
    15·2 answers
  • Write the anwser in the simplest form.​
    7·1 answer
  • 5.6.AP-1<br> Solve the inequality.<br> 3 + 4x&gt; 27
    14·1 answer
  • When 59,527 is divided by 23, the quotient is 2,588 R ___.
    15·1 answer
  • 27. A manufacturer claims its Brand A battery lasts longer than its competitor's Brand B battery. Nine batteries of
    11·1 answer
  • -2/3x-7y=6<br> x+3y=-9<br> solve by substitution
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!