Answer: He needs 1456 feet of wood to complete his home project.
Step-by-step explanation:
1. You know that he needs 13 pieces of wood to complete his home project. Each one of the pieces is 112 feet long.
2. Therefore, to calculate the quantity of wood he need to complete the project (which you can call ), you need to multiply 13 pieces by the the lenght of each one of them (12 feet), as you can see below:
3. Therefore, he needs 1456 feet of wood.
The sample mean is an estimate of the population mean.
The sample mean is exactly equal to the population mean
<h3>How to determine the true statement</h3>
When the population mean is known; the value of the population mean can be used as the sample mean.
This is so because:
The sample mean is an estimate of the population mean.
And it is represented as:
Hence, the true statement is that the sample mean is exactly equal to the population mean
Read more about sample mean at:
brainly.com/question/12892403
Question
-8 + (+7)=
Answer:
<h2>
-1</h2>
Step-by-step explanation:
the expression -8 +(+7) is equal to 7 - 8 (commutative property)
7 - 8 = -1
Answer: 7 years
Step-by-step explanation:
let x be the age of Mary
so John's age will be 2x
the equation becomes
2x+x=21
3x=21
x=21/3
x=7
Answer:
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Step-by-step explanation:
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