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3 years ago

2. Write an equation that represents the following word problem:

Mathematics

2 answers:

DIA [1.3K]3 years ago

8 0

Answer:

p=4x

Step-by-step explanation:

If you need a further explanation feel free to ask

Nat2105 [25]3 years ago

7 0

Answer:

p=4x

Step-by-step explanation:

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Choose one of the problem above. describe how you organized the answer

sweet-ann [11.9K]

Answer:

there is no problem

Step-by-step explanation:

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3 years ago

Which trig function would you use?

noname [10]

⠀⠀ ⠀ ⠀⠀ $\huge{\tt{\red{❥}\green{A}\purple{N}\pink{S}\blue{W}\orange{E}\red{R}}}$ Sine

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4 years ago

dakota earned money mowing laws this summer. she put 80% of the money in savings she then spends 25% of the remaining money on m

lawyer [7]

She spent 25% and had $99 left.

$99 is 75% of the remaining money.

Divide to find the total remaining

99 / 0.75 = $132

Now she put 80% of her total earnings in the bank, this means the remaining amount is 20%.

Divide the remaining amount by 20%:

132 / 0.20 = $660

She earned $660 total.

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4 years ago

An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha

ddd [48]

Answer:

We conclude that the valve performs above the specifications.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 6.3 pounds per square inch

Sample mean, $\bar{x}$ = 6.5 pounds per square inch

Sample size, n = 130

Alpha, α = 0.02

Population standard deviation, σ = 0.8

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 6.3\text{ pounds per square inch}\\H_A: \mu > 6.3\text{ pounds per square inch}$

We use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{6.5 - 6.3}{\frac{0.8}{\sqrt{130}} } = 2.85$

Now, $z_{critical} \text{ at 0.02 level of significance } = 2.05$

Decision rule:

If the calculated statistic is greater than the the critical value, we reject the null hypothesis and if the calculated statistic is lower than the the critical value, we accept the null hypothesis

Since,

$z_{stat} > z_{critical}$

We fail to accept the null hypothesis and reject the null hypothesis. We accept the alternate hypothesis.

Thus, we conclude that the valve performs above the specifications.

3 0

3 years ago

The height of a cylinder is twice the radius of its base. What expression represents the volume of the cylinder, in cubic units?

stepladder [879]

Answer:

2πr³

Step-by-step explanation:

The volume (V) of a cylinder is calculated as

V = πr²h ← r is the radius and h the height

Here h = 2r, hence

V = πr² × 2r = 2πr³

5 0

3 years ago

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