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anzhelika [568]
2 years ago
10

Need help witt this math problem please

Mathematics
1 answer:
SVEN [57.7K]2 years ago
3 0

f(x) = x + 4

g(x) = x^3

g(f(-3)) = ?

---First, find f(-3). Then, substitute that value in to g(x) for x.

f(-3) = -3 + 4 = 1

g(1) = 1^3 = 1

Answer: 1

Hope this helps!

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How do I find QS here?
docker41 [41]
Answer: 12.

To solve this problem, let's first solve for x. Thi is easiest done by figuring what QR is in terms of x using two equations, both from different lines.

In the first line:
QR = 15 - 4x.

In the third line:
QR = 13x - 1 - x = 12x - 1.

Now, we have to set these equations equal to each other. 
15 - 4x = 12x - 1
15 = 16x - 1
16x = 16
x = 1

Next, we take line three, 13x - 1, and substitute x as 1. The answer is 12.
3 0
3 years ago
X+1/3y=4 in slope intercept form EXPLAIN
skad [1K]

Answer:

Y = 12

Step-by-step explanation:

x + 1/3y = 4

Multiply both sides of the equation by 3.

3  ⋅  1 3  ⋅  y  =  3  ⋅  4

Simplify both sides of the equation:

1. Simplify both sides of the equation.

2. Multiply 3 by 4

How to simplify:

Cancel the common factor of 3

Rewrite the expression.

Multiply by 1

y  =  3  ⋅  4

Multiply 3 by 4

(12)

7 0
3 years ago
5(y+2/5)=-13<br> what is y
jolli1 [7]

Answer:

y=11/5

Step-by-step explanation:

first divide by 5 on both sides

y+2/5=-13/5

subtract 2/5 on both sides to isolate the y

y=11/5

:))

8 0
2 years ago
Read 2 more answers
A student likes to use the substitution method for systems of equation. How can he use it with a system that is not in the prope
Kay [80]

Answer:

Step-by-step explanation:

We have given:

-2x+y=4     ---------equation1

3x+4y=49 ---------equation 2

We will solve the 1st equation for y and substitute the value into the 2nd equation.

-2x+y=4     ---------equation1

Move the values to the R.H.S except y

y = 2x+4

Now substitute the value of y in  2nd equation:

3x+4y=49

3x+4(2x+4)=49

3x+8x+16=49

Combine the like terms:

3x+8x=49-16

11x=33

Now divide both the sides by 11

11x/11 = 33/11

x= 3

Now substitute the value of x in any of the above equations: We will substitute the value in equation 1:

-2x+y=4

-2(3)+y=4

-6+y=4

Combine the constants:

y=4+6

y = 10

Thus the solution set of (x,y) is {(3,10)}....

8 0
3 years ago
Which of the following is the solution to 4/5 = 20/(x-5)?
Alexxandr [17]

Answer:

x=30

Step-by-step explanation:

\frac{4}{5}=\frac{20}{x-5} \\\\4(x-5)=20*5\\\\4x-20=20(5)\\\\4x=20(5)+20(1)\\\\4x=20(5+1)\\\\4x=20(6)\\\\x=\frac{20(6)}{4} \\\\x=5*6\\\\x=30

8 0
3 years ago
Read 2 more answers
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