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Anna11 [10]
2 years ago
10

In a class there are 25 students 15 are boys what percentage are girls​

Mathematics
1 answer:
tankabanditka [31]2 years ago
7 0

Answer:

40%

Step-by-step explanation:

Total students = 25

Boys = 15

Girls = 25 - 15 = 10

Percent of girls = 10/25

Percent is out of 100.

=> 10/25 = x/100

=> Cross multiply

=> 25 * x = 100 * 10

=> 25x = 1000

=> 25x/25 = 1000/25

=> x = 40

So, 40% are girls

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Two lines are represented by the equations -1/2y=6x+10 and y=mx for which value of m will the lines be parallel
hjlf

Answer:

-12

Step-by-step explanation:

So to start we need to know what makes a line parallel. In an equation we know that for lines to be parallel they must have the same slope(m).

Then, we  need to know the slope-intercept form of an equation. The slope intercept form is y=mx+b where m is the slope of the line and b is the y-intercept. In this problem where can see the second equation is already in this form.

Now that we know we need to find the slope, and we know that the second equation is in slope-intercept form we're going to convert the fist equation into the correct form.

To do this, we know we need to make sure y is the only thing on the left side of the equal sign. Currently, on the left side of the equal sign we have -\frac{1}{2} y so we have to divide both sides by -\frac{1}{2} to get y=-12x -20

Now that we have it converted to slope-intercept form, we are going to look for what represents the slope or m in the equation. In this case the slope would be -12, so any line with a slope of -12 will be parallel.

8 0
3 years ago
Determine if the given sequence is an arithmetic sequence. If it is, identify the common difference.
lianna [129]

Answer:

Is this an arithmetic sequence?

Yes.

Is there a common difference and if so, what is it?

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The common difference is 1

6 0
8 months ago
Which is better 9.95 for 30oz of coffee or 3.50 for 12oz of coffee
MaRussiya [10]

Answer:

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Step-by-step explanation:

30/9.95 = 3.02

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What is the value of X ?
Zielflug [23.3K]

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Step-by-step explanation:

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3 years ago
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