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VashaNatasha [74]
4 years ago
5

A preliminary study of hourly wages paid to unskilled employees in three metropolitan areas was conducted. Included in the sampl

e were: 7 employees from Area A, 9 employees from Area B, and 12 employees from Area C. The test statistic was computed to be 4.91. What can we conclude at the 0.05 level?
Mathematics
1 answer:
andriy [413]4 years ago
5 0

There is a system glitch during the process of adding my answer here so i create a document file for the answer, you find it in the attachment below.

Download docx
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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  

12

100

Substituting and calculating  

gives

79.16

79.16

12

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

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

5 0
3 years ago
Read 2 more answers
Anjali is adding a border to her 4 tablecloths. Each tablecloth requires 6 3/4 yards of border. How many yards of border will sh
Alika [10]

Answer:

27 yards

Step-by-step explanation:

multiply 4*6 3/4

4 0
3 years ago
Read 2 more answers
A square pyramid has a base with a side length of 7.5 feet and lateral faces with heights of 16 feet.What is an expression that
Goryan [66]

Answer:

SA=592.50\text{ ft}^2

Step-by-step explanation:

We have been given that a square pyramid has a base with a side length of 7.5 feet and lateral faces with heights of 16 feet. We are asked to find the surface area of the square pyramid.

We will use surface area of square pyramid to solve our given problem as:

SA=2a^2+4ah, where,

a = Length of each side of base,

h = Height of lateral face.

Upon substituting our given values in above formula, we will get:

SA=2(7.5\text{ ft})^2+4(7.5\text{ ft})(16\text{ ft})

SA=2(56.25\text{ ft}^2)+480\text{ ft}^2

SA=112.5\text{ ft}^2+480\text{ ft}^2

SA=592.50\text{ ft}^2

Therefore, the surface area of the given square prism would be 592.50 square feet.

6 0
3 years ago
3x + 2 = 3x + 2 pls help me I do not understand
lbvjy [14]

Answer:

3x+2=3x+2 because, you have to combine your like terms, so here is an example..

                 3x + 2

there are no like terms to combine here so the problem stays how it was, so there saying 3x+2 = 3x+2 because they're stating the problem then saying that the answer is the same because there is no like terms her to combine.

Hope this helps,

6 0
3 years ago
K(x) = -2x + 6<br> Find (0)
Schach [20]

Answer:

Rewrite 0 as +.

+

Goodluck to you

6 0
3 years ago
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