Belinda has 7 pieces of wood. Each piece of wood measures 3/4 yards. How many yards of wood does she have all together?

2 answers:

svlad2 [7]3 years ago

8 0

5.25 or you can do 5 1/4

6 0

Answer:

5.25 or 5 and 1/4

Step-by-step explanation:

7 pieces of wood * 3/4 yards each piece of wood is = 5.25 or 5 and 1/4 which represents the total length of the 7 pieces of wood.

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Akimi4 [234]

Answer:

673 people

Step-by-step explanation:

Statistics<3

Use the margin of error formula.

ME = t* $\frac{s}{\sqrt{n} }$

Margin of error or ME = 3
Critical t or t* with a confidence level of 95% on the calculator is invNorm(.975) = 1.96. You would use invt, except you don't have the degrees of freedom, so you can approximate with invNorm. It's close enough.
Standard deviation or s = 39.7
Solve for n!

3 = 1.96* $\frac{39.7}{\sqrt{n} }$