3 years ago

SMART PPL PLEASE HELP ME

Mathematics

1 answer:

andrey2020 [161]3 years ago

5 0

Answer:

A and E

Step-by-step explanation:

The top one and the bottom.

Pls give brainlyest if I am right

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3 years ago

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Plz help with the math worth 21 points

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Answer:

As there is one math problem over there.

Lets see the question first:

It says that "A hair dryer is rated $1200\ W$ ,if you use the dryer for $0.25\ h$ .How much electric energy do you use ?"

Final answer = Electic energy $=0.3\ kW\ h$

Step-by-step explanation:

Electrical Energy $E=Power \times time$ .

The total amount of electrical energy used depends on the total power used by the electrical device and the total time they are used for.

So we have been given the power of the hair dryer $=1200\ W =\frac{1200}{1000}=1.2\ kW$

Now the time it has been use for $=0.25\ hrs$

To calculate electric energy we will multiply both the terms.

Electric energy $=0.12 \times 0.25 =0.3\ kW\ h$

So electric energy used for the hairdryer is = $0.3\ kW\ h$

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3 years ago

A dressmaker bought 2/5 meter of yellow cloth, 1/3 meter of blue cloth and 1/6 meter of red cloth to make a dress for her daught

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Answer:

1.2/5 meter of yellow cloth

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3 years ago

at the pet fair, Darlene's dog weighed 5 times as much as leah's dog. Together, the dogs weighed 84 pounds. how much did each do

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Let x = Darlene's dog's weightlet y = Leah's dog's weight x = 5yx + y = 84 so, 5y + y = 84, which means 6y = 84 so, y = 84/6 = 14x = 5(14) = 70 Darlene's dog = 70 lbs, Leah's dog = 14 lbs.<span> </span>

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Let width = x ft then
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so the width is 7 ft and length is 14 ft.

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