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2 years ago

A pedestal for a statue is made with 405 cubic feet of concrete.

Mathematics

2 answers:

Pavlova-9 [17]2 years ago

5 0

Answer:

45 square feet

Step-by-step explanation:

we know that

The volume of the pedestal (rectangular prism) is given by the formula

$V=Bh$

where

B is the area of the rectangular base of pedestal

we have

$V=405\ ft^3\\h=9\ ft$

substitute the given values in the formula and solve for B

$405=B(9)$

$B=405/9\\B=45\ ft^2$

trapecia [35]2 years ago

5 0

Answer:

Step-by-step explanation:

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Answer:

The price for a small glass of milk is $0.95, and the price for a breakfast taco is $1.15.

Step-by-step explanation:

Let the price of a taco be x and the price for a small glass of milk be y.

$x + y = 2.1$

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Subtract the new third equation from the second equation:

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2.8 -3x =12.1 −6x what's x

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Scores on a college entrance examination are normally distributed with a mean of 500 and a standard deviation of 100. What perce

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Answer:

The percentage is $P(350 < X 650 ) = 86.6\%$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 500$

The standard deviation is $\sigma = 100$

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$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

Generally

$\frac{X - \mu }{\sigma } = Z (The \ standardized \ value \ of \ X )$

$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

$P(350 < X 650 ) = P(-1.5$

$P(350 < X 650 ) = P(Z < 1.5) - P(Z < -1.5)$

From the z-table $P(Z < -1.5 ) = 0.066807$

and $P(Z < 1.5 ) = 0.93319$

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=> $P(350 < X 650 ) = 0.866$

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