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2 years ago

Lexi needs to hire a carpenter to redo her bathroom. Charlie and Sons charges $1000 for the design fee and $75 per

Mathematics

1 answer:

ElenaW [278]2 years ago

6 0

Charlie and sons- 75x100=7500+1000= $8500
home dreams- 80x100=8000+800= $8800
home dreams is more expensive.

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Explain what is 90% of 180

Yakvenalex [24]

Answer:

The answer is 162.

Step-by-step explanation:

To find the percentage of a number:

Turn the percentage into a decimal. 90% to .90

Multiply the decimal by the number you want to find the percentage of. .90 x 180

The answer is the product.

4 0

3 years ago

If your pencil is 20 centimeters long how many millimeters is it

Nonamiya [84]

200 milimeters is the answer

4 0

3 years ago

A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours. To test this claim,

natka813 [3]

Answer: C. 12.5

Step-by-step explanation:

Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.

Population mean : $\mu=4000$

Sample size : n= 100

Sample mean : $\overline[x}=4500$

Standard deviation: $s=400$

The value of test-statistic is given by :-

$z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}\\\\\Rightarrow\ z=\dfrac{4500-4000}{\dfrac{400}{\sqrt{100}}}\\\\\Rightarrow\ z= 12.5$

Hence, the value of the test statistic for this problem is 12.5.

5 0

3 years ago

Assume a recent sociological report states that university students drink 5.70 alcoholic drinks per week on average, with a stan

Triss [41]

Answer:

Mean= 5.70

Standard deviation= 0.132

Step-by-step explanation:

For the distribution of sample mean:

Mean of the sampling distrubution = \mu = 5.70

Standard deviation of the sampling distrubution = sigma/sqrt{n} = 1.7201 /sqrt{170} = 0.132

5 0

3 years ago

How many square feet of carpet will we need for this hole??

vaieri [72.5K]

Bottom = 2x5 = 10ft
Middle = 2x6 ( 4+2) = 12
Top 4x2= 8
10ft+12ft+8ft= 30ft squared

6 0

3 years ago