3 years ago

18. What's the product of 3 2/3 and 14 2/5 ? A. 42 4/5 B. 54 C. 52 4/15 D. 52 4/5

Mathematics

1 answer:

Nookie1986 [14]3 years ago

4 0

Answer:A

Step-by-step explanation:

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Determine the sum of the arithmetic series: 5+18 +31 +44 + ... 161.

Finger [1]

Answer:

1079

Step-by-step explanation:

Hello,

18-5 = 13

31-18=13

44-31=13

161=5+13*12

So we need to compute

$\displaystyle \sum_{k=0}^{k=12} \ {(5+13k)}\\\\=\sum_{k=0}^{k=12} \ {(5)} + 13\sum_{k=1}^{k=12} \ {(k)}\\\\=13*5+13*\dfrac{12*13}{2}\\\\=65+13*13*6\\\\=65+1014\\\\=1079$

Thanks

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3 years ago

Solve for x in the figure below

fredd [130]

Answer:

x = 35.4

Step-by-step explanation:

Sum of all interior angles in a triangle = 180°

Therefore:

(x + 2)° + (2x + 2)° + (2x - 1)° = 180°

x + 2 + 2x + 2 + 2x - 1 = 180

Collect like terms

x + 2x + 2x + 2 + 2 - 1 = 180

5x + 3 = 180

Subtract 3 from each side

5x + 3 - 3 = 180 - 3

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3 years ago

Which of the following values are in the domain of the function graphed

Mice21 [21]

Answer:

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D. 0
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Step-by-step explanation:

The domain includes all x values, and here, it is [-2, 4].

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2 years ago

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A) I believe but you might not want to go with it cause I'm not good at math AT ALL:)

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