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2 years ago

If a = 5, what is the value of 2a2 - 3a + 11 ? A. 16 B. 46 C. 71 D. 96

Mathematics

2 answers:

Flura [38]2 years ago

5 0

Answer:

a. 16

Step-by-step explanation:

2(5)(2) = 20; 20 - 3(5) = 5; 5 + 11 = 16

I hope I did this right. Good luck

fgiga [73]2 years ago

5 0

Answer:

B. 46

Step-by-step explanation:

2(5)^2-3(5)+11

PEMDAS (exponent)

2(25)-3(5)+11

PEMDAS

50-15+11

subtract (because it came before addition)

50-15= 35+11

final step add

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2 years ago

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Answer:

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Feel free to correct if I am wrong. Hope this helps!

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1 year ago

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A standard letter-sized piece of paper has a length and width of 8.5 inches by 11 inches.

den301095 [7]

Answer:

Area of the resulting rectangle = 23.375 inch²

Step-by-step explanation:

After 1 fold width or length reduces to half.

Area = Length x width

So after 1 fold area will reduce to half.

So we have

$\texttt{Area after n folds =}\frac{\texttt{Initial area}}{2^{\texttt{number of folds}}}$

Initial area = 8.5 x 11 = 93.5 inch²

Here the paper were folded completely in half, length is reduced to half and width reduced to half, that is

Number of folds = 2

$\texttt{Area after 2 folds =}\frac{\texttt{Initial area}}{2^{2}}\\\\\texttt{Area after 2 folds =}\frac{93.5}{4}=23.375inch^2$

Area after 2 folds = 23.375 inch²

Area of the resulting rectangle = 23.375 inch²

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2 years ago