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kifflom [539]
3 years ago
7

Whats the value of y? 3(4y+8)=-12

Mathematics
2 answers:
Vladimir [108]3 years ago
5 0
3(4y + 8) = -12

First, divide both sides by 3. / Your problem should look like: 4y + 8 =  -\frac{12}{3}
Second, since 4 goes into 3 to get 12, simplify \frac{12}{3} to 4. / Your problem should look like: 4y + 8 = -4
Third, subtract 8 from both sides. / Your problem should look like: 4y = -4 - 8
Fourth, subtract -4 - 8 to get -12. / Your problem should look like: 4y = -12
Fifth, divide both sides by 4. / Your problem should look like: y =  -\frac{12}{4}
Sixth, simplify \frac{12}{4} to 3. / Your problem should look like: y = -3

Answer: y = -3

kobusy [5.1K]3 years ago
4 0
3(4y+8)=−12

(3)(4y)+(3)(8)=−12(Distribute)

12y+24=−12

Subtract 24 from both sides.

12y+24−24=−12−24

12y=−36

Divide both sides by 12.

12y/12=−36/12

y=−3

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Answer:

\$17,500

Step-by-step explanation:

Let

x----> that month's sales

y----> October earnings

we know that

8\%=8/100=0.08

y=0.08x+1,400 -----> equation A

y=2,800 -----> equation B

Equate equation A and equation B and solve for x

2,800=0.08x+1,400

0.08x=2,800-1,400

x=1,400/0.08

x=\$17,500

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3 years ago
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8 0
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Read 2 more answers
Andrea Is selling candles as a fundraiser she spent $50 on supplies for making the candles she plans to sell candles for $10 eac
dalvyx [7]

COMPLETE QUESTION:

Andrea is selling candles as a fundraiser. She spent $50 on supplies for making the candles. She plans to sell the candles for $10 each. Her profit can be modeled by C(x) = 10x - 50.

What type of function is this?

What is the domain and range of the function?

Answer:

- This function is one-to-one

- Domain D = {x: x is a whole number ≤ Z}

- Range R = {y: y is in -50, ..., (10Z - 50)}

Where Z is the number of candles she could produce with $50.

Step-by-step explanation:

Given that her profit is modeled by C(x) = 10x - 50

- This function is one-to-one, because it is in the form f(x) = y.

Let the number of candles she could make with $50 be Z.

Then the domain is the set of all whole numbers less or equal to Z.

D = {x: x is a whole number ≤ Z}

If there are infinite number of candles she could make with that money, then

D = (-infinity, infinity)

When x = 0, we have C = -50

When x = Z, we have C = 10Z - 50

The range is then given as

R = whole numbers from -50 up to (10Z - 50)

R = {y: y is in (50 -Z), ..., (10Z - 50)}

If there are infinite number of candles she could make with that money, then

R = (-infinity, infinity)

6 0
3 years ago
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