What expression is equivalent to 7 8/4

Mathematics

2 answers:

NeX [460]3 years ago

4 0

8 1/4
Have A Good Day

Stels [109]3 years ago

4 0

8 1/4 Good luck! And there is the answer

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Help needed bad at math

ANTONII [103]

first and second part put 0.75, then multiply 0.75 by 2 to get 1.50, then write in the third part 1 and 1/2

hope this helps

6 0

2 years ago

Emily needs enough Fabric for 3 1/2 hats. Since she has half a hat done. If each bag requires 1 2/7 ft of Fabric, how much fabri

kow [346]

first off let's convert the mixed fractions to improper fractions.

$\stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}} ~\hfill \stackrel{mixed}{1\frac{2}{7}}\implies \cfrac{1\cdot 7+2}{7}\implies \stackrel{improper}{\cfrac{9}{7}}$

she already did half a hat, so we can say $\cfrac{7}{2}-\cfrac{1}{2}\implies \cfrac{7-1}{2}\implies 3$

so she only needs enough fabric to make 3 more full hats, we know each one uses 9/7 ft, so

$3\cdot \cfrac{9}{7}\implies \cfrac{27}{7}\implies 3\frac{6}{7}$

5 0

2 years ago

A square patio has an area of 220 square feet. Approxmately how long is each side of the patio (to the nearest hundredths)

Tanzania [10]

This is a square root problem since the patio is square.

A of a square is L x W or L^2 or W^2 - it's all the same.

So find the square root of 220 feet.

14.8323 We are to round to nearest hundreth which is the second position right of decimal. Look at the number to the right of that position.

It is a 2. So we do not round the number up.

14.83 is the rounded sq. ft of each side.

Check it!

14.83^2 = 219.92 Because we rounded, this number is not exact, but close.

3 0

3 years ago

In 2012, about 24% of high-school seniors reported binge drinking (defined as five or more drinks in a row in the past two weeks

Artist 52 [7]

Answer: (0.24 - 1.96*0.019, 0.24 + 1.96*0.019)

Step-by-step explanation:

We know that the confidence interval population proportion (p) is given by :-

$\hat{p}\pm z*\cdot SE$

, where $\hat{p}$ = sample proportion.

z* = Critical value (Two -tailed)

SE = standard error

Given : In 2012, about 24% of high-school seniors reported binge drinking (defined as five or more drinks in a row in the past two weeks), a substantial drop since the late 1990s.

$\hat{p}=0.24$