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tamaranim1 [39]
3 years ago
9

Multi step problems what is -10(10+b)=5(3b+5)

Mathematics
1 answer:
Alla [95]3 years ago
5 0

Answer:

b= -5

Step-by-step explanation:

-10(10+b)=5(3b+5)

Distribute

-100 -10b = 15b +25

Add 10b to each side

-100-10b+10b = 15b+10b +25

-100 = 25b+25

Subtract 25 from each side

-100-25 = 25b+25-25

-125 = 25b

Divide by 25

-125/25 =25b/25

-5 =b

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5+5+6 = 16

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area = \frac{1}{2}bh
we know b but we need to find the height. We can find the heigh by using pythagorean theorem a^2 + b^2 = c^2

height = a^2 + 3^2 = 5^2
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4 0
3 years ago
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<u><em>Explanation</em></u>

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Answer:

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3. The octahedron has 6 vertices, 12 edges and 8 faces. Then V-E+F=6-12+8=2

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