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Math Problems
Grade 7
Least common denominator
David used
2
1
4
2\frac{1}{4}
2
4
1
feet of cloth to make a shirt. He also used
3
13
\frac{3}{13}
13
3
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exttt{
−
3
-3
−
3
/
5
5
5
} express as exttt{
20
20
20
} denominator
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Find the area under the normal distribution curve in between
z
=
1.05
z=1.05
z
=
1.05
and
z
=
1.78
z=1.78
z
=
1.78
.
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In the data set below, what is the interquartile range?
\newline
1
1
3
1
6
3
1
5
\begin{array}{llllllll}1 & 1 & 3 & 1 & 6 & 3 & 1 & 5\end{array}
1
1
3
1
6
3
1
5
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