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3 years ago

Find the surface area of a right square pyramid with base edge length 2 feet and height 5 feet.

Mathematics

1 answer:

zhenek [66]3 years ago

7 0

Answer:

24.4 sq. ft.

Step-by-step explanation:

Area of a right square pyramid is:

A = a^2 + 2(a)*square root of ((a^2/4) + b^2)

A = 4 + 4 (square root of ((4/4) + 25) = 4 + 4* square root of 26

A = 4 + 4*5.099

A = 4 + 20.396

A = 24.396 sq ft.

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What fraction is larger 7/8 or 14/16

Bas_tet [7]

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3 years ago

A recent poll of 120 randomly selected adults who frequent the local farmer's market found that 54 have purchased reusable clot

Olenka [21]

Answer:

95% Confidence interval: (0.361,0.539)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 120

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$\hat{p} = \dfrac{x}{n} = \dfrac{54}{120} = 0.45$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

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$0.45\pm 1.96(\sqrt{\dfrac{0.45(1-0.45)}{120}}) = 0.45\pm 0.089\\\\=(0.361,0.539)$

is the required 95% confidence interval for the proportion of adults who have purchased reusable cloth bags.

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4 years ago

-3х + 2y = 56<br> -5x- 2y = 24<br><br> X=<br> Y=

Ket [755]

Answer:

x = -10

y = 13

Step-by-step explanation:

-3x + 2y = 56

-5x - 2y = 24

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-8x____ = 80

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______x = -10

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-3(-10) + 2y = 56

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2y = 56 - 30

2y = 26

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y = 13

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4 years ago

Solve 100y + 50x = 200

liq [111]

The answer to your question is x=-2y+4

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