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4 years ago

The quotient 97.3hr ÷ 5.5hr contains how many significant digits?A. 4B. 3C. 2D. 1

Mathematics

1 answer:

aleksandrvk [35]4 years ago

5 0

The answer is.. C I hade trouble with this question and I finally got it

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Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley

lisabon 2012 [21]

Answer:

<em>Riley has 72 tokens</em>

Step-by-step explanation:

<u>System of Equations </u>

We have two conditions for the tokens Riley and Erik have earned. Let's call x and y to the number of tokens of Riley and Erik respectively. The first condition states that

$x+y=135$

Solving for y

$y=135-x$

The second condition is that the ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. It's written as

$\displaystyle \frac{x}{y}=\frac{8}{7}$

Or equivalently

$7x=8y$

Replacing y from the first equation

$7x=8(135-x)$

Operating

$7x=1080-8x$

Simplifying

$15x=1080$

$\boxed{x=72}$

Riley has 72 tokens

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3 years ago

If the volume of the pyramid shown is 216 in 3, what is the area of its base?

Juliette [100K]

Answer:

Step-by-step explanation:

volume =1/3×base area×height

216=1/3× A×6

base area=216/2=108 in²

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3 years ago

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The figure shows a kite ABCD where AB = AD, BC = CD and the diagonals AC and BD intersect at E.

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Answer:

ABD

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2 years ago

Carla Compra borrowed $800 at 14% for one year. She paid a $15 processing fee.

Taya2010 [7]

800×0.14=112
112+15=127
(127÷800)*100==15.88%

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3 years ago

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If vector c = vector b + vector a, under what circumstance does c = b+a ?

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The sum of the magnitudes will be the magnitude of the sum when the vectors have the same direction.

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4 years ago

The quotient 97.3hr ÷ 5.5hr contains how many significant digits?A. 4B. 3C. 2D. 1​

The quotient 97.3hr ÷ 5.5hr contains how many significant digits?A. 4B. 3C. 2D. 1