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matrenka [14]
3 years ago
9

The express elevator in a skyscraper goes up 51 floors in 12¾ seconds. How many floors does the elevator go in 2 seconds? A. 8½

B. 4 C. 8 D. 5
Mathematics
2 answers:
garik1379 [7]3 years ago
6 0

the answer is A. 8 1/2, hope this helps

Marina86 [1]3 years ago
6 0

Answer:

C. 8

Step-by-step explanation:

The elevator goes up 51 floors in 12.75 seconds.

Take 51/12.75 to get the number of floors per second.

51/12.75=4

4 floors multiplied by 2 seconds equals 8.

Therefore, answer C is correct.

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Brian has 16 yards of chain measured and cut at the. Hardware store. The chain will cost him 47.52$ how much is that per food? _
mojhsa [17]
3 feet= 1 yard

16*3= 48 feet.

47.52/48= 0.99

It will cost Brian $0.99 per foot. 

Find the unit rate. 

49.50/50= 0.99

No, it wouldn't. It would be the <em>same price 

0.99=0.99
It doesn't matter which one Brian chose. </em>

I hope this helps!
~kaikers
5 0
3 years ago
Read 2 more answers
#19 how do you do the work???!
Semenov [28]

Answer:

x=\frac{1}{3}

Step-by-step explanation:

move the terms with x to the left side of the equation:

add 3x to both sides

3x-1+3x=1

add 3x and 3x

6x-1=1

move all term not containing x to the right side:

add 1 to both sides of the equation

6x=1+1

6x=2

divide each term by 6

\frac{6x}{6}=\frac{2}{6}

x=\frac{2}{6}

simplify the fraction

x=\frac{1}{3}

8 0
3 years ago
To which subset of real numbers does the number 1/5 belong
Travka [436]
1/5 is an expression that represents 1÷5= .2
Since the return decimal equivalent doesn't go on forever and has a finite end, this is a member of the rational number set.
4 0
3 years ago
Simplify the expression. <br><br> 5(x - z) + 4(y - x)
Pepsi [2]
5x-5x+4y-4x i believe

5 0
3 years ago
30
storchak [24]

Answer:

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Step-by-step explanation:

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