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3 years ago

Express 356 miles in 8 hours as a unit rate

Mathematics

2 answers:

lyudmila [28]3 years ago

5 0

If it's unit rate you can divide 356 by 8 and get 44.5

andreyandreev [35.5K]3 years ago

3 0

356/8 = 44.5

44.5 miles per hour, miles/hour

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The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day.

WITCHER [35]

The minimum sample size required to estimate the mean usage of water = 2225.07

What is Standard deviation?

In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.

We can find the minimum sample size required to estimate the mean usage of water as shown below:

Standard deviation $\sigma =3.61$

Margin of error E=0.15

Critical value for 95% confidence interval = 1.96

Required minimum sample size: $n=(\frac{Z_{\frac{\alpha}{2}}.\sigma }{E} )^2$

$=(\frac{1.96\times 3.61}{0.15} )^2$

=2225.07

Hence, the minimum sample size required to estimate the mean usage of water = 2225.07

Learn more about Standard deviation here:

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7 0

2 years ago

What is the measure of the largest angle in the

schepotkina [342]

Answer:

83°

Step-by-step explanation:

Fund the diagram attached. The sum of the ange in the triangle given is 180°, hence;

2x+1+x+15+x = 180

Collect like terms

2x+x+x+1+15 = 180

4x+16 = 180

4x = 180-16

4x = 164

x= 164/4

x =41

Out of the angles the largest angle is 2X+1

Get the largest angle;

2x+1 = 2(41)+1

=82 +1

= 83°

Hence the measure of the largest angle is 83°

6 0

3 years ago

Noah wants to buy a skateboard that usually sells for $79.99. All merchandise is discounted by 12%. What is the total cost of th

beks73 [17]

Answer:

$74.36 sorry all i got

Step-by-step explanation:

First, we need to determine the sales price of the skateboard. The formula for find the discounted prices is:

Where:

is the sales price of the item: what we are solving for in this part of the problem.

is the regular price of the item: $79.16 for this problem.

is the discount rate: 12% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 12% can be written as

100

Substituting and calculating

gives

79.16

100

79.16

949.92

100

79.16

9.4992

69.6608

69.66

rounded to the nearest cent.

Now we can find the total price of the item with tax included. The formula for this is

#t = p + (p * r)

Where, this time:

is the total price: what we are solving for in this problem.

is the price of the item: it is the sales price of the item for this problem which is $69.66

is the tax rate: 6.75% or, using the same rule as in the formula above:

6.75

100

Substituting and calculating

gives:

69.66

6.75

100

69.66

470.205

100

69.66

4.70205

74.36205

74.36

rounded to the nearest cent.

Noah would pay a total cost (with the discount and after tax) of $74.36

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3 years ago

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70 POINTS SIMPLE QUESTION ...im just dumb PLEASE HELP...

gogolik [260]

Answer:

A dilation of 2 about the origin.

Step-by-step explanation:

You can see in the original figure the points are half the points of the transformed figure.

For example the coordinates of H are (0.5,0)

The coordinates of H' are (1,0)

Since 0.5 * 2 = 1

There is a dilation of 2 about the origin.

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3 years ago

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Steven had 24 pineapples. He sold 6 of them. What fraction of the pineapples did he sell?

Snowcat [4.5K]

1/4 of his pineapples have been sold

5 0

3 years ago

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