Answer:
The elevator will travel 396 feet in 12 seconds.
Step-by-step explanation:
10 secs = 330ft
330/10 = 33
10 * 33 = 330
Hence,
12 * 33 = 396
12 secs = 396 ft
Hope this helps :)
6 and 2/8 is correct hope this helps.
5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Let x represent the amount of 45% copper and y represent the amount of 66% copper needed to make 42 pounds of a third alloy containing 66% copper. Hence:
x + y = 42 (1)
Also:
0.45x + 0.69y = 42(0.66) (2)
This gives:
x = 5.25, y = 36.75
5.25 pounds of one alloy containing 45% copper and 36.75 pounds of 69% copper is used to make 42 pounds of 66% copper
Find out more on equation at: brainly.com/question/2972832
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Answer:
Step-by-step explanation:
mean
I think.
$34 divided by 4 = $8.5 per hour.
$8.5 Times 10 hours = $85
So she would earn $85
