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N76 [4]
3 years ago
13

Expand & simplify 5(b+6) +5(b-5)

Mathematics
2 answers:
natta225 [31]3 years ago
8 0

Step-by-step explanation:

5(b+6) +5(b-5)  = 0\\ 5b + 30 + 5b - 25  = 0\\ 10b + 5 = 0 \\ 10b =  - 5 \\  \\ b =  -  \frac{5}{10}  \\  \\ b =  -  \frac{1}{2}

Fittoniya [83]3 years ago
4 0

Answer:

10b +5

Step-by-step explanation:

5(b+6) + 5(b-5) = 5b + 5*6 + 5b - 5*5= 5b + 30 +5b -25 = 10b +5

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Two triangles are similar.The the smaller triangle has side 10,20 and 15 units the larger triangles longest side is 52 units.Wha
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Answer: The perimeter of the largest triangle = 117 units.

Step-by-step explanation:

Sides of smaller triangle = 10,20 and 15 units

Longest side = 20 units

Longest side of larger triangle = 52 units

Sides of two similar triangles are proportional.

Let k be proportionality constant.

k=\dfrac{\text{Length in larger triangle}}{\text{Length in smaller triangle}}

k=\dfrac{52}{20}\\\\\Rightarrow\ k=\dfrac{13}{5}

Length of other two sides,

10\times\dfrac{13}{5}, 15\times\dfrac{13}{5}\ i.e.\ 26\text{ units}, 39\text{ units.}

So sides of larger triangle = 52 units, 26 units , 39 units

Perimeter of largest triangle = 52 +26+39 = 117 units

Hence, the perimeter of the largest triangle = 117 units.

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Is this figure a quadrilateral?
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Yes its a quadrilateral

Step-by-step explanation:

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4 less than a number n is - 15 as a equation
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Answer:

I believe the equation would be n - 2 = -15.

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