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Alex_Xolod [135]
3 years ago
9

Simplify this algebraic expression completely. 10y – 3(y + 5) A. 7y – 15 B. 7y – 5 C. 7y + 2 D. 7y + 5

Mathematics
1 answer:
Kipish [7]3 years ago
6 0
Hey! :)

10y-3(y+5)

Distribute the -3. 

-3*y= -3y  -3*5= -15

10y-3y-15

7y-15

"A" is the answer.

~'Manda
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PLS HELP ME I WILL MARK THE BRAINLIEST
Serga [27]

Answer:

1. 155 yd², 2. 379.54 ft², 5. x = 65.82π

Step-by-step explanation:

1. A = (1/2) · (3 + 13) · 8

A = (1/2)(16)(8)
A = 64
A = bh
A = 13*7
A = 91
64 + 91 = 155
155 yd²

2. A = bh
A = 25x25
A = 625
A = πr²
A = 3.14*12.5²
A = 3.14*156.25
A = 490.625
490.925/2 = 245.4625
625 - 245.4625 = 379.5375
379.54 ft²

3. and 4. Sorry, I don't know how to solve these

5. A = πr²
A = 3.14*7²
A = 3.14*49
A = 153.86
x/154 = 153.86π/360
360x = 154*153.86π
360x = 23694.44π
x = 65.8178889π
x = 65.82π

Hope this helps :)

7 0
2 years ago
T = L(8 + RS)<br> Solve for R
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Answer:

Step-by-step explanation:

T=L(8+RS)

T=L8+LRS

T-L8=LRS

R=T-L8/LS

6 0
3 years ago
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