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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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Now, if we subtract both sides by 54b (on the first equation), we get this:

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Divide both sides by 50:

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Now that we know this, we can move on to the 2nd equation:

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Input the variable 't':

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Simplify:

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Because both sides are negative, we can turn it into a positive:

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3 years ago
A researcher is interested in estimating the mean weight of a semi tracker truck to determine the potential load capacity. She t
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Answer:

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Putting the values, we get,  

t_{critical}\text{ at degree of freedom 16 and}~\alpha_{0.05} = \pm 2.119  

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4 years ago
Which point is the vertex of the angle below?
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Answer:

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The vertex is the point at which the lines that define the angle's amplitude meet.

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4 0
3 years ago
Scientific notation 20,000+3,400,000= an example to would be helpful
Viefleur [7K]
20 000 is as much as 20 * 1 000, so we can write it as: 20 * 10^3
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I hope that's what you meant :)
4 0
4 years ago
Read 2 more answers
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