3 years ago

Please help me out with this question

Mathematics

1 answer:

I am Lyosha [343]3 years ago

6 0

Answer:

no. 4

Step-by-step explanation:

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About what percent of electric blowers are less than 7.5 pounds? (You do not have to type the percent sign)

Margarita [4]

Answer:75% ; 50%

Step-by-step explanation:

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2 years ago

three bags of packing peanuts are used to fill 2 boxes how many bags of packing peanuts does each box use between which two whol

fredd [130]

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3 years ago

Read 2 more answers

Christina wants to compute the cost of tiling the floor in her bathroom. The floor measures 7 feet 6 inches by 8 feet 10 inches.

ArbitrLikvidat [17]

Answer:

Two boxes will cost $\$35.95\cdot 2=\$71.9.$ The cost of one tile is approximately $\dfrac{\$71.9}{67}\approx \$1.08.$

Step-by-step explanation:

Note that 1 ft = 12 in, then

$7\ ft\ 6\ in=7\cdot 12+6\ in =90\ in,\\ \\8\ ft\ 10\ in=8\cdot 12+10\ in=106\ in.$

The area of the floor is

$90\cdot 106=9540\ in^2.$

Now

$1\ ft^2=144\ in^2,$

then

144 sq. in - 1 tile,

9540 sq. in - x tiles.

Mathematically,

$\dfrac{144}{9540}=\dfrac{1}{x},\\ \\x=\dfrac{9540}{144}=66.25$

tiles is needed to cover the floor (67 full tiles).

Each box of tiles contains 45 tiles, so Cristina has to buy 2 boxes. These two boxes will cost $\$35.95\cdot 2=\$71.9.$ The cost of one tile is approximately $\dfrac{\$71.9}{67}\approx \$1.08.$

7 0

3 years ago

Solve a a-20=b a= plzz help

saveliy_v [14]

In order to have the variable by itself you have to add 20 to both sides. So your answer would be a=b+20. I hope this helps love! :)

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3 years ago

You plan to invest $1,210 a year for 7 years at a 9 percent annually? How much will you have in 7 years? Assume the first invest

erastova [34]

Answer:

See below

Step-by-step explanation:

For SIMPLE interest :

1210 + 1210 * .09 * 7 = $ 1972.30

For ANNUAL COMPOUNDING of interest

1210 ( 1 + .09)^7 = $ 2211.93

I do not know which one you need....what are you studying presently?

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2 years ago