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zalisa [80]
2 years ago
7

Wyatt owes $472.22 on his credit card. He returns two items, one for $49.63 and the other for $47.58.

Mathematics
1 answer:
aniked [119]2 years ago
8 0

Answer:

Holy bloop you gotta learn

Step-by-step explanation:

you dumb

go to school

and learn

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The widths of two similar rectangles are 10 m and 15 m. What is the ratio of the perimeters? Of the areas?
vitfil [10]
Area and perimeter are in the ratio of 1:3. but if u mean to ask about the ratio of perimeters & areas of both triangles. the answer would be 1:1
6 0
2 years ago
4a+6b=10<br> 2a-4b=12<br><br> what does 12a =?
Usimov [2.4K]
If you have at least as many equations as your have unknown variables, the 'system' is solvable (unless the equations are copies of eachother).

In this case, isolate one letter and plug it in the other. I'm going for the 2a in the bottom one (it doesn't matter)

2a - 4b = 12 => (divide by two and move the b's to the other side)

a = 6 + 2b. (plug this one into the top equation)

4(6+2b) + 6b = 10 => 24+8b+6b = 10 => 24 + 14b = 10 => 14b = -14 => b=-1

a = 6 + -2 = 4.

So a=4 and b=-1. 


4 0
3 years ago
If it takes six men six days to dig six holes, how long will it take one man to dig half a hole?
irakobra [83]
6x/6y=6z
X/?Y=1/2Z
36=6
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3 0
2 years ago
3m - 2n= 12 <br> Rearrange the equation so N is the independent variable <br><br> M =
juin [17]

Answer:

n= 2/3m=6?

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
A lumber company is making boards that are 2920.0 millimeters tall. If the boards are too long they must be trimmed, and if the
Effectus [21]

Answer:

The value of the test statistic is of 0.22.

Step-by-step explanation:

Our test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the expected mean, \sigma is the standard deviation(square root of the variance) and n is the size of the sample.

A lumber company is making boards that are 2920.0 millimeters tall.

This means that \mu = 2920.

A sample of 12 is made, and it is found that they have a mean of 2922.7 millimeters with a variance of 121.00.

This means that X = 2922.7, n = 12, \sigma = \sqrt{121} = 11. So

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{2922.7 - 2922}{\frac{11}{\sqrt{12}}}

t = 0.22

The value of the test statistic is of 0.22.

4 0
2 years ago
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