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Ray Of Light [21]
3 years ago
13

20 POINTS Please show work!

Mathematics
1 answer:
hoa [83]3 years ago
7 0

Answer:

k=2

Step-by-step explanation:

7(k+8)=70

We move all terms to the left:

7(k+8)-(70)=0

We multiply parentheses

7k+56-70=0

We add all the numbers together, and all the variables

7k-14=0

We move all terms containing k to the left, all other terms to the right

7k=14

k=14/7

k=2

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150 pounds shared into the ratio of 4:1
V125BC [204]

\begin{cases}x+y=150\smallskip\\\dfrac{x}{y}=\dfrac{4}{1}\end{cases}\Leftrightarrow\begin{cases}x+y=150\smallskip\\x=4y\end{cases}\Leftrightarrow\begin{cases}5y=150\smallskip\\x=4y\end{cases}\Leftrightarrow\begin{cases}y=30\smallskip\\x=120\end{cases}

150=120+30

4 0
3 years ago
The cost to manufacture t shirts can be represented by the function c(x)=10.5x complete the following statement about the functi
Advocard [28]

For this case we have:

Cost of manufactures of T-shirts C(x)=10.5x

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Part A:

Substituting x = 8 in the total cost equation you have to:

C (8) = (10.5) (8)\\\\C (8) = 84\\

Thus, the cost of 8 shirts will be C (8) = 84\\

Part B:

If x = 12 then

C (12) = (10.5) (12)\\\\C (12) = 126\\

Thus, the cost of 12 shirts will be C (12) = 126\\

Answer:

C (8) = 84\\\\C (12) = 126\\\\


8 0
3 years ago
Read 2 more answers
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Georgia [21]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
I need help the question is solve the equation n+75=155​
SashulF [63]
All you need to do for this is 155-75 which would be 80 :) hope this helps
5 0
2 years ago
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3 years ago
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