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Westkost [7]
3 years ago
14

Mulit-Step Equations

Mathematics
1 answer:
Verizon [17]3 years ago
8 0

Answer:

1 no answer

2 a=0

3 n=-1

4 x=4

5 x=-5

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The standard divination of a set of data is 9.5 the mean is 205 what is the margin of error
skelet666 [1.2K]

Step-by-step explanation:

Margin of error = critical value × standard deviation

We aren't given the critical value or any information to calculate it, so we need to make some assumptions.  Assuming the data set is large enough to be approximated as normal, and that the confidence level is 95%, then the critical value is 1.96.

ME = 1.96 × 9.5

ME = 18.62

You may choose to round 1.96 to 2, in which case the margin of error is:

ME = 2 × 9.5

ME = 19

8 0
3 years ago
How many bundles of strip flooring are needed to cover a rectangular floor area 14 ft by 13 ft 6 in in size if a bundle of strip
OLEGan [10]

Answer:

Under this conditions 8.15 strips will be needed to cover the floor.

Step-by-step explanation:

In order to solve this problem we first need to calculate the area of the floor, since it's rectangular it's area is given by the product of it's length and width. In this case one of these measurements was given to us with a mixed unit, we need to convert it to a single unit in order to calculate correctly. This is done bellow:

width = 13 ft 6 in

width = 13 ft + 6 in

width = 13 ft + (6 in)/12 = 13 + 0.5 = 13.5 ft

Now we can calculate the area of the floor as shown bellow:

floor area = width*length = 14*13.5 = 189 ft²

Since each strip is 29 ft² to calculate how many strip will be used we need to divide the area of the whole floor by the area of each strip. We have:

number of strips = 189/29 = 6.52

Althought there must be 25% more strips, so we need to multiply that value by 1.25.

number of strips = 6.52*1.25 = 8.15

Under this conditions 8.15 strips will be needed to cover the floor.

8 0
3 years ago
If 3(y + 12) = 24, find the value of 18y.
Goryan [66]
First divide both sides by 3 and you’ll get
(y+12)=8 “y” will then equal -4 as -4+12=8=8 so therefore 18y= -72
4 0
2 years ago
TIMEREN
IgorC [24]

Answer:

C Might be the best answer

Step-by-step explanation:

Sorry If I am wrong but I am sure it's right.

6 0
2 years ago
Please give me a real answer no links or files.
Natali [406]

Answer:

14 ft

Step-by-step explanation:

6 0
2 years ago
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