2 years ago

60% of the students in class are girls. If there are 15 girls, how many students are in class?

1 answer:

4 0

25

If 15 is 60% of a number, it is 3/5 of the whole. Since 5 goes into 25 5 times, and 5 goes into 15 3 times, 15 is the 3/5 of 25.

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Step-by-step explanation:

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Which expression is equivalent to 18 1/5-(-22 2/5)-(-40 1/5)?

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Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

A picture of a cougar is 3/4in long, and the legend below it says 1 : 80. How long is the actual cougar?

stealth61 [152]

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3 years ago

What is the slope of a line that is perpendicular to the graph of y = –3x?

Morgarella [4.7K]

Step-by-step explanation:

Hey there!

The equation is; y= -3x

or, 3x+y = 0.......... (I)

From equation (I)

$slope(m1) = \frac{ - coeff. \: of \: x}{coeff. \: of \: y}$

$m1= \frac{ - 3}{1}$

Therefore, m= -3

Now, As per the condition of perpendicular lines;

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M2= -1/-3

Therefore, the slope of a line which is perpendicular to the equation is; 1/3.

Hope it helps...

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2 years ago