3 years ago

Which operations are the most efficient to use to solve the problem and what is the solution?

1 answer:

6 0

To find the width of Lance's banner, use division (area divided by length). Then use multiplication to times the width by 3 so you can find Evelyn's banner width. (I assume you know how to multiply and divide, but just comment if you'd like me to show you :) )

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3 years ago

A pot is being used to boil off 1 kg of water. The specific energy required to cause the phase change is 2297 kJ/kg. Assuming th

lana66690 [7]

Answer:

It will take 58 seconds

Step-by-step explanation:

If you have 1 kg of water in the jar, half of it will be 0.5 kg.

To vaporize half of the water (0.500 kg) the energy supply needed is

$2297 kJ/kg*0.5kg=1148.5 kJ$

If the stove is supplying 20 kJ/s, the time its needed is

$\frac{1148.5 kJ}{20\frac{KJ}{s} }=57.425 s$

It will last at least 58 seconds to vaporize half of the water.

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2 years ago

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valentinak56 [21]

Answer:

-2/3

Step-by-step explanation:

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Ariel wants to write 8 entries for her blog. After 2 hours,she has 5 entries left. After 4 hours, she has 2 entries left. Which graph represents ariels remaining entries?

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1 year ago

Which problem can be solved using the expression 3 fifths divided by 5 eighths

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