HELP I ONLY HAVE 15 MIN HURRY numbers 9 and 10

Mathematics

2 answers:

Inessa05 [86]2 years ago

5 0

Answer:

| Fraction | Decimal | Percentage |

| 9/2 | 4.5 | 450% |

| 7/10 | .7 | 70% |

and:

ab - bc = 4(5)-4(3)

20 - 12 = 8

Sladkaya [172]2 years ago

4 0

Answer:

$4 \times \frac{1}{2 }$

B) 4.5

C)0.7

D) idk

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$\bf \begin{cases}
r=\textit{rate of the plane}\\
w=\textit{rate of the wind}\\
\end{cases}
\\\\

\begin{array}{ccccllll}
&distance&rate&time(hrs)\\
&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
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\end{array}
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$\bf thus \begin{cases}
630=(r+w)1\frac{1}{2}\to 630=(r+w)\frac{3}{2}
\\\\
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--------------\\
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thus\\
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solve for "w", to find the wind's speed rate,

so hmmm what's the plane's rate? well 420 - w = r :)

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