Answer:
31.5 hours
Step-by-step explanation:
Given that 1 unit of electricity is consumed in 3 hours by 1 fan, it means that 2 fans will consume 1 unit in
= 3/2 hours
= 1.5 hours
If 2 fans consume 1 unit in 1.5 hours then 21 units will be consumed in
= 21 * 1.5/1
= 31.5 hours
It means he used the fans for 31.5 hours
The statement that is true about the dot plots is: Range for Week 1 equals range for Week 2.
<h3>What is the Range of a Data Set?</h3>
Range is simply the difference between the highest data point and the lowest data point in a data set.
Range for Week 1:
Range = 89 - 62
= 27
Range for Week 2:
Range = 89 - 62
= 27
The sentence of median and mean doesn't satisfy the situation.
Hence, Range for Week 1 equals range for Week 2.
Learn more about range here:
brainly.com/question/12581928
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The area of a parallelogram can be calculated using the formula
Area = base * height
If we substitute in our known numbers we get:
49 2/5 = 5 1/5 (b)
To solve this equation, we must divide both sides by 5 1/5. to get rid of the coefficient on the right side of the equation.
9 1/2 = b
Therefore, the base of the parallelogram shaped window is 9 1/2 feet.
48 (total chocolates)=8f (workers)
to get (f) by itself you have to divide by 8 on both sides
48/8 =8f/8
f=6