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levacccp [35]
3 years ago
9

If y varies directly as x, and y = 25 when x = 5, find y when x = 25.

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
8 0
It would be 125 so A
dezoksy [38]3 years ago
5 0

\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby  \begin{array}{llll} k=constant\ of\\ \qquad  variation \end{array}\\\\ \rule{31em}{0.25pt}\\\\ \textit{we also know that } \begin{cases} y=25\\ x=5 \end{cases}\implies 25=k5\implies \cfrac{25}{5}=k \\[2em] 5=k\hspace{20em}\boxed{y=5x} \\[2em] \textit{when x = 25, what is \underline{y}?}\qquad y=5(25)\implies y=125

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2 years ago
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elena-s [515]

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To find k, use the equation

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4 0
3 years ago
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They're usually 365 days in each year every 4th year is call a leap year and has one extra day in February how many days are the
Mariana [72]

Answer:

Total number of days in 8 years is 2,922 days.

Step-by-step explanation:

Number of days in a Normal year  = 365 days

Number of days in a  leap year  =  366 days

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⇒ So, number of leap years in 8 years  =   2

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= 2 x ( Number of days in a leap year)

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5 0
3 years ago
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Lapatulllka [165]
The answer is:  [A]:   45x² + 81x + 36 .
_________________________

Explanation:  Use "FOIL" technique: (First, Outer, Inner, and Last Terms); 
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__________________________________________

(5x+4)(9x+9) = 45x² + 45x + 36x + 35 = 45x² + 81x + 36 .
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6 0
3 years ago
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Korvikt [17]

Answer:

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If you divide 8y / 8  then you have to do the same thing to 56. When you do, y  = 7

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3 years ago
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