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Reptile [31]
3 years ago
13

A triangular pyramid is made of 4 equilateral triangles. The sides of the triangles measure 5 m, and the height of each triangle

is 4.3m. A rectangular prism has a height of 4.3m and a square base that is 5 m on each side. Susan says that the total surface area of the prism is more than the total surface area of the pyramid. Is she correct. EXPLAIN!! URGENT!!!
Mathematics
2 answers:
Makovka662 [10]3 years ago
4 0

hello hello follow me follow me follow me

Nuetrik [128]3 years ago
3 0
Susan is correct. The total surface area of the prism is three times the total surface area of the pyramid.
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Answer:

a) X[bar]₁=  1839.20 cal

b) X[bar]₂= 1779.07 cal

c) S₁= 386.35 cal

Step-by-step explanation:

Hello!

You have two independent samples,

Sample 1: n₁= 15 children that did not eat fast food.

Sample 2: n₂= 15 children that ate fast food.

The study variables are:

X₁: Calorie consumption of a kid that does not eat fast food in one day.

X₂: Calorie consumprion of a kid that eats fast food in one day.

a)

The point estimate of the population mean is the sample mean

X[bar]₁= (∑X₁/n₁) = (27588/15)= 1839.20 cal

b)

X[bar]₂= (∑X₂/n₂)= (26686/15)= 1779.07 cal

c)

To calculate the sample standard deiation, you have to calculate the sample variance first:

S₁²= \frac{1}{n_1-1}[∑X₁² - (( ∑X₁)²/n₁)]= \frac{1}{14} + [52829538 - (\frac{27588^{2} }{15}) = 149263.4571 cal²

S₁= 386.35 cal

I hope it helps!

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3 years ago
Question 5 of 10
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Answer:

The median value of the houses is $169,000

Step-by-step explanation:

Since the houses were undervalued by $15,000, add $15,000 to all amounts

154,000 + 15,000 = 169,000

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172,000 + 15,000 = 187,000

149,000 + 15,000 = 164,000

To take the median of the data set, order the numbers from least to greatest

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Eliminate one number from both sides until you reach one number

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So, what is the case in which he uses the least coins? can he use 1 coin? no, there isn't a 35 cent coin. can he use 2 coins? yes! he can use 25+10 cent coins!

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we have to divide:

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so we would use 7 coins.

And the difference is 5: 7-2 is 5.
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Step-by-step explanation:

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405,040 hope that helps.
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