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I am Lyosha [343]
3 years ago
15

What percent of 28 is 21

Mathematics
2 answers:
ss7ja [257]3 years ago
5 0
If we take 28 to be the 100%, what  is 21 off of it?

\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
28&100\\
21&p
\end{array}\implies \cfrac{28}{21}=\cfrac{100}{p}\implies p=\cfrac{21\cdot 100}{28}
Bumek [7]3 years ago
5 0
21 divided by 28 equals 7. thus is 70%
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Step-by-step explanation:

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Step-by-step explanation:

1 t=16/21

2.m=2

3.n=13/7

4.a=2

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8 0
3 years ago
Rachel is a stunt driver. One time, during a gig where she escaped from a building about to explode(!), she drove to get to the
lara31 [8.8K]

Answer:

D(t)=-24t+166

Step-by-step explanation:

Let

D(t) = the distance to the safe zone (measured in meters)

t = time (measured in seconds)

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Rachel's rate = 24 meters per second

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<u>Find:</u> D(t)

Rachel's rate is the slope of the function D(t). Since the distance is decreasing when the time is increasing, the slope must be negative.

Hence, the function expression is

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To find b, substitute t_1=4 and  D(t_1)=70:

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3 years ago
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Umnica [9.8K]

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Step-by-step explanation:

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7/4

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