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3 years ago

The ratio of boys to girls in a group is 7:2. If there are 60 more boys than girls, work out how many girls there are.

Mathematics

1 answer:

zimovet [89]3 years ago

7 0

Answer:

Step-by-step explanation:

So, kids are divided into 8 total parts.

7 - 1 = 6 more parts that are boys. The 48 extra boys are those 6 parts.

48/6 = 8 boys per part

All parts have the equal number of kids, so one part girls also has 8.

There are 8 girls (and 56 boys. 8:56 = 1:7).

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In the accompanying diagram, the legs of right triangle ABC are 5 and 12 and the hypotenuse is 13. What is the value of cos A? A

disa [49]

$\cos A=\frac{5}{13}$

answer: C

7 0

1 year ago

20 POINTS PLZ HELP!!!!!!!!!!!!!!!!!!!!

mars1129 [50]

Answer:

a = 15

Step-by-step explanation:

First, you have to combine like terms: 5a and 3a, -5, -15, 6, and 4.

You can do it in any order and you will always get a = 15 for your answer.

Hope this helps!!!

3 0

3 years ago

Read 2 more answers

A line has the points (3,7) (4,9) (5,11) (6,13). If the slope is divided by 2, what is the new slope?

lorasvet [3.4K]

Answer:

The new slope is 1

Step-by-step explanation:

The slope of any two points can be found by:

$slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Finding slope of (3,7) (4,9)

$slope=\frac{9-7}{4-3}\\slope=\frac{2}{1}\\slope=2$

Finding slope of (4,9) (5,11)

$slope=\frac{11-9}{5-4}\\slope=\frac{2}{1}\\slope=2$

So, the slope of the line is 2

Now if slope is divided by 2, new slope will be:

$slope = \frac{2}{2}\\slope=1$

So, The new slope is 1

Keywords: slope between points of a line

Learn more about slope between points of a line at:

#learnwithBrainly

4 0

3 years ago

Witch number is composite 5,2,11,9

ololo11 [35]

Answer:

9 is the composite number.

Step-by-step explanation:

A composite number is a positive integer that can be formed by multiplying two smaller positive integers.

6 0

3 years ago

How many solutions does the equation have? 6x+4x-6=24+9x

babunello [35]

Combine like terms.
10x+6=24+9x

Put variables to one side and the constants to another.
x=-18

There is only one solution.

Hope this helps!

5 0

3 years ago