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3 years ago

0.15% of what number is 10.5?

Mathematics

1 answer:

mario62 [17]3 years ago

8 0

Answer:

67667.7

Step-by-step explanation:

let the number= Y

the question simply means that 0.15 percent of Y which give 10.5

so, let find Y:

0.15% of Y 10.15

<h3>Stating the mathematical equation</h3>

0.15/100×y = 10.15

0.0015y= 10.15

divide bothsides by 0.0015

0.0015y/0.0015= 10.15/0.0015

y=6766.66

y= 6766.7 approximately

<h3>therefore, 0.15% of 6766.7 is 10.5</h3>

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3 years ago

DJ Davon is making a playlist for work; he is trying to decide what 12 songs to play and in what order they should be played. If

Marta_Voda [28]

Answer:

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Step-by-step explanation:

Given that :

Number of choices to select = 12

Category available :

Blues - 14

Country - 25

Disco - 21

To select an equal number of song for each category ; then 4 songs will be selected from each :

Using combination :

(14C4 * 25C4 * 21C4)

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Thus ;

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Using calculator;

14C4 = 1001 ;

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Hence,

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3 years ago

What is the height of a square pyramid with a volume of 75 cubic feet and base length of 5 feet

natima [27]

So hmm notice the picture below

is a "square" pyramid, thus, the base is a square, all sides are the same

now, we know the volume is 75 and one side is 5

thus $\bf \textit{volume of a pyramid}\\\\
V=\cfrac{1}{3}\cdot Base\cdot height\qquad 
\begin{cases}
Base=length\cdot width\\
\qquad\qquad 5\cdot 5=25\\
V=75
\end{cases}\\\\\\ 75=\cfrac{1}{3}\cdot 25\cdot h$

solve for "h" or height