If a 4000 watt oven is on for 5 hours, then how many kilowatt-hours (kw-hrs) of energy are used?
Solution: We are given that the oven is 4000 watt and it is on for 5 hours.
We have to find the how many kilowatt-hours (Kw-hrs) of energy are used by the oven.
We first need to convert watts into kilowatt's. We know that:
![1Kw=1000 w](https://tex.z-dn.net/?f=1Kw%3D1000%20w)
Therefore, 4000 Watts ![=\frac{4000}{1000}=4Kw](https://tex.z-dn.net/?f=%3D%5Cfrac%7B4000%7D%7B1000%7D%3D4Kw)
Now, we can find how many kilowatt-hours (Kw-hrs) of energy are used by the oven.
Energy used by the oven
Kw-hrs
Therefore, 20 kilowatt-hours (kw-hrs) of energy are used by the oven.
Answer:
She should have multiplied the total of all the choices. 3 choice
Step-by-step explanation:
Xavier
he charges $10 per hour
good luck :)
<span>A=area=22
sq ft; L=length;
W=width=3 2/3 ft
3 2/3 ft=11/3 ft</span>A=L*W<span>A/W=L
22sq ft/(11/3)ft=L
6ft=L
So the length (height) of the poster is 6 feet.</span>
Answer:
Step 1: Calculate
We calculate the square root of 30 to be:
√30 = 5.47722557505166
Step 2: Reduce
Reduce the tail of the answer above to two numbers after the decimal point:
5.47
Step 3: Round
Round 5.47 so you only have one digit after the decimal point to get the answer:
5.5
To check that the answer is correct, use your calculator to confirm that 5.52 is about 30.