3 years ago

A restaurant is adding a wheelchair ramp to their entrance and the angle of the incline can only be 15

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

3 0

What is a 5 x 5 ramp

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Suppose y =2x+10. Find Y if x=4 Suppose Y = 2x - 4. Find X if y=10

Zepler [3.9K]

You just have to plug in the value of x and y.
1) y = 2x + 10 —> y = 2(4) + 10
y = 8 + 10
y = 18
2) y = 2x - 4 —> 10 = 2x - 4
add four to both sides
14 = 2x and divide 2 by both sides and you get x = 7

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3 years ago

Laurie buys four bags of candy with 10 pieces of candy in each bag. Her father then gives her 5 more pieces of candy. Laurie wan

notka56 [123]

45 pieces of candy in total
45/6 would be 7.5

so each friend gets 7 pieces of candy with 3 pieces of candy left (7 x 6=42 )

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3 years ago

Use the number line to find the absolute value of 7.

FromTheMoon [43]

Answer:

Step-by-step explanation:

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4 years ago

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STALIN [3.7K]

Answer:

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Step-by-step explanation:

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3 years ago

In a study of the length of time that students require to earn bachelor’s degrees, 60 students are randomly selected and they ar

Alex787 [66]

Answer: $(4.24,\ 5.36 )$

Step-by-step explanation:

The confidence interval to estimate the population mean is given by :_

$\overline{x}\ \pm\ z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : n= 60 , the sample is a large sample (n>30), so we can apply z-test.

Sample mean = $\overline{x}=4.8$

Standard deviation : $\sigma=2.2$

Level of confidence: $1-\alpha=0.95$

$\Rightarrow\ \alpha=0.05$

Then, critical z-value = $z_{\alpha/2}=1.96$

Then, a 95% confidence interval estimate of the population mean will be

$=4.8\ \pm\ (1.96)\dfrac{2.2}{\sqrt{60}}\\\\=4.8\pm0.56=(4.8-11.76, 4.8+11.76)=(4.24,\ 5.36 )$

Hence, the 95% confidence interval to estimate the population mean = $(4.24,\ 5.36 )$ .

7 0

3 years ago