2 years ago

Consider this expression. m² - 7 + n² When m = -2and n = 5, the value of the expression is

Mathematics

1 answer:

Rasek [7]2 years ago

8 0

Answer:

Step-by-step explanation:

Just substitute and solve!

(-2)^2 - 7 + (5)^2 = 4 - 7 + 25 = 22

hope this helps! <3

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A rectangular hallway rug has a width of 9 feet, and the diagonal measures 41 feet. What is the rug's length?

slega [8]

Answer:

Rug's length is equal to $40$ feet.

Step-by-step explanation:

Width of a rectangular hallway rug $(w)=9$ feet

Diagonal of a rectangular hallway rug $(d)=41$ feet

The relation between width $(w)$ , length $(l)$ and diagonal $(d)$ is given as follows:

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Step-by-step explanation:

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3 years ago

The mean cost of a 5 pound bag of shrimp is $50 with the standard deviation of six dollars. If a sample of 40 bags of shrimp is

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SOLUTION

We will use the formula

$\begin{gathered} Z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}} \\ where\text{ } \\ x=51.3,\mu=50,\sigma=6,n=40 \end{gathered}$

Applying we have

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Now using a Zscore calculator for 1.370320, we have

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