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2 years ago

Please help. Is algebra.

Mathematics

1 answer:

Law Incorporation [45]2 years ago

6 0

Answer:

Question 2: A. Overlapping lines.

The equations are identical; and if we would treble the first equation, we get the second equation.

Question 3: B. Multiply the second equation by -3 to get $-3x - 12y = -48$

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A paint company claims their paint will be completely dry within 45 minutes after application. Recently, customers have complain

Angelina_Jolie [31]

Answer:

The probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026

Step-by-step explanation:

Mean = $\mu = 45$

Population standard deviation = $\sigma = 6$

Sample size = n =25

Sample mean = $\bar{x} = 52$

We are supposed to find the probability of observing a sample mean of x = 52 or greater from a sample size of 25 i.e. $P(x\geq 52)$

$Z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}\\Z=\frac{52-45}{\frac{6}{\sqrt{25}}}$

Z=5.83

P(Z<52)=0.9999974

$P(Z\geq 52)=1-P(z$

Hence the probability of observing a sample mean of x = 52 or greater from a sample size of 25 is 0.0000026

3 0

3 years ago

Marlin davies buys a truck for 28,000. In three years , the car depreciates 48% in value how much is the car worth in three year

Scrat [10]

$28,000
X 48%
-----------
$13,440

The truck would be worth $13,440 by the end of the 3 year time span. Hope this helps!

5 0

2 years ago

Find the mean of each data set.<br> 1.9, 10, 11, 16, 12, 12,14

igor_vitrenko [27]

Answer:

Add all the values up and divide by 7 ( as there are 7 values in the data set)

Step-by-step explanation:

1.9 + 10 + 11 + 16 + 12 + 12 + 14 = 76.9

If you divide by 7, you will get 10.9857142857.

6 0

2 years ago

Read 2 more answers

What is the ratio for the volumes of two similar cylinders, given that the ratio of their heights and radio is 2:3?

gtnhenbr [62]

The answer will be a because they are similar and by law the ratio can be cubed to find ratio of volume

6 0

3 years ago

Consider a cylinder with a diameter of 8 feet and a height of h feet. Which equation can be used to find V, the volume of the cy

Arlecino [84]

Answer:

The correct answer is option A

Step-by-step explanation:

The volume of a cylinder is given by

$V = \pi r^{2} h\\$

Substituting the values of radius and height in above equation, we get -

$radius = \frac{diameter}{2} \\radius = \frac{8}{2} \\radius = 4 feet\\V = \pi 4^{2} h\\$

5 0

3 years ago

Read 2 more answers