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Yuri [45]
3 years ago
6

Use two unit multipliers to convert 20 inches to miles

Mathematics
1 answer:
jarptica [38.1K]3 years ago
6 0

Answer:

Step-by-step explanation:

I answered another one of your questions so I will not explain as much.  ther are 12 inches in a foot and then 5280 feet in a mile so that's 1 ft/ 12 in and 1 mi/ 5280 ft.  So  the math is 20 in * 1 ft/ 12 in * 1 mi/ 5280 ft = .000315 mi.  

In reference to the last one, do keep in mind "square" inches and whatnot mean you square things.  so 1 ft/ 12 in becomes 1 ft^2/ 144 in^2.  Just as a small heads up to what could be tricky.

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Please I need help with this problem
DochEvi [55]

Answer: shorter: 24 longer: 41

Step-by-step explanation: we need to write an equation. x+(2x-7)=65. We don’t need the parentheses, but I put them so it would make it a bit more clear. Simplify: 3x-7=65. Add 7 to both sides: 3x=72. Divide by three: 72/3=24 Now we know the shorter piece is 24. 24x2-7=48-7=41. We know these are correct because 24+41=65

4 0
3 years ago
What about this one ?
il63 [147K]
For this case we have the following equation:
 x ^ 2 + 18x + 32 = 0
 Rewriting we have:
 x ^ 2 + 18x = -32
 By completing squares we have:
 x ^ 2 + 18x + (18/2) ^ 2 = -32 + (18/2) ^ 2
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 x ^ 2 + 18x + (9) ^ 2 = -32 + (9) ^ 2
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option 1
6 0
4 years ago
Read 2 more answers
Suppose that 950 couples each have a baby find the mean and standard deviation for the number of boys in the 950 babies
nydimaria [60]

The mean and standard deviation for the number of boys in the 950 babies are 475 and 15.41, respectively

<h3>How to determine the mean and the standard deviation?</h3>

From the complete question, we have:

P(boy)= 0.5

Sample size = 950

The mean is then calculated as:

\bar x = np

This gives

\bar x = 950 * 0.5

Evaluate

\bar x = 475

The standard deviation is calculated as:

\sigma = \sqrt{np(1 - p)

This gives

\sigma = \sqrt{950 * 0.5(1 - 0.5)

Evaluate

\sigma = 15.41

Hence, the mean and standard deviation for the number of boys in the 950 babies are 475 and 15.41, respectively

Read more about mean and standard deviation at:

brainly.com/question/4079902

#SPJ1

4 0
2 years ago
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Pepsi [2]
2(4+2) so the answer is 12
3 0
2 years ago
The edge of each cube used to build this rectangular prism is 14 centimeter long. Which equation shows the volume of the prism,
Lunna [17]
Its 4/4 x 3/4 x 3/4 cm3 =9/16 cm3

6 0
4 years ago
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