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Sergio039 [100]

3 years ago

5

an plumber charges a flat rate of $25 for a job and $15 for each hour that he works on the job.how many hours did the plumber wo

rk on a job if the total charge was $85

1 answer:

Illusion [34]3 years ago

4 0

Answer: 3 hours

Step-by-step explanation:

If you add up 25+15=40 if you add up 40+15=55, 55+15=70, 70+15=85

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How do i solve this?

Ierofanga [76]

Step 1: Simplify both sides of the equation.

−36=p−30

Step 2: Flip the equation.

p−30=−36

Step 3: Add 30 to both sides.

p−30+30=−36+30

p=−6

7 0

3 years ago

An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From pre

Shtirlitz [24]

Answer:

Null Hypothesis, $H_0$ : $\mu \leq$ 250 W

Alternate Hypothesis, $H_A$ : $\mu$ > 250 W

Step-by-step explanation:

We are given that an appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W.

They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.

<u><em>Let </em></u> $\mu$ <u><em> = mean power consumption of microwave ovens.</em></u>

So, Null Hypothesis, $H_0$ : $\mu \leq$ 250 W

Alternate Hypothesis, $H_A$ : $\mu$ > 250 W

Here, <u>null hypothesis states tha</u>t the mean power consumption of microwave ovens is no more than 250 W.

On the other hand, <u>alternate hypothesis sates that</u> the mean power consumption of microwave ovens is more than 250 W.

The test statistics that would be used here is <u>One-sample z test statistics</u> as we know about the population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

Hence, this would be the appropriate hypotheses to determine if the manufacturer's claim appears reasonable.

5 0

3 years ago

Explain how I determined the answer to number three on the assignments a day and give the answer as well. ( give the steps you d

GaryK [48]

I multiplied 3 3/4 by 125.3 I converted 3 3/4 to a decimal to make it easier so I did
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A)469.875

3 0

2 years ago

Which of the following is true about horizontal asymptotes?

8090 [49]

A function has a horizontal asymptote at the value of y = a if the line y = a can be used to estimate the end behavior of a function and if f ( x ) → a as x → ∞ or x → − ∞ is the correct statement about horizontal asymptotes. Option A

<h3>What are horizontal asymptotes?</h3>

A horizontal asymptote of a graph can be defined as a horizontal line at y = b where the graph tend to approach the line as an inputs approach to infinity ( ∞ or –∞).

A slant asymptote of a graph is known as a slanted line y = mx + b where the graph approaches the line as the inputs approach the positive infinity ∞ or to the infinity –∞.

Thus, a function has a horizontal asymptote at the value of y = a if the line y = a can be used to estimate the end behavior of a function and if f ( x ) → a as x → ∞ or x → − ∞ is the correct statement about horizontal asymptotes. Option A

Learn more about horizontal asymptotes here:

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8 0

1 year ago

A store sells cheese in half a pound package a recipe calls fpr 1.72 pound of cheese how many packages does the chef need

Sedbober [7]

Answer:

4 packages

Step-by-step explanation:

Since the store sells by 1/2 packages, we have to round 1.72 UP to 2.00. Then we multiply 1/2pound by 4= 2.00 pounds

4 0

2 years ago