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MatroZZZ [7]
3 years ago
10

Simplify this expression. 2x3(5x3 − 7)

Mathematics
2 answers:
o-na [289]3 years ago
6 0

Answer:

for plato it should be B: 10x^6-14x^3

Step-by-step explanation:


romanna [79]3 years ago
3 0
If you mean <span>2x3(5x3 − 7)
2x3(15-7)
2x3(8)
6(8)
48
if you mean 2x^3(5x^3-7)
</span>2x^3(5x^3) - 2x^3(7)
10x^6-14x^3
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What is the area of a section of pavement that is 10 ft wide and 70 yd​ long? Give your answer in square feet. I think I have th
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I am Lyosha [343]

Answer:

Part 9) x=5  

Part 10) x=-9  

Step-by-step explanation:

we know that

The <u><em>Midpoint Theorem</em></u> states that: The segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side

Part 9) we know that

Point Q is the midpoint segment XY (QY=QX)

Point R is the midpoint segment XW (RW=RX)

Applying the Midpoint Theorem

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RQ=\frac{1}{2}WY  

we have

RQ=2x-3\\WY=x+9

substitute

2x-3=\frac{1}{2}(x+9)  

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4x-x=9+6

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Part 10) we know that

Point B is the midpoint segment TS (BS=BT)

Point C is the midpoint segment RS (CS=CR)

Applying the Midpoint Theorem

BC is parallel to TR

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BC=\frac{1}{2}TR  

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x+19=\frac{1}{2}(x+29)  

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2x-x=29-38          

x=-9  

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