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Kitty [74]
3 years ago
8

Explain in words what mistake you made and how will correct it. in a group of 20 children,there were 8 girls. which is the ratio

of girls to boys in simplest form?
Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0
Well first do 20 children minus 8 girls to find how many boys there are:
20-8=16
So there are 16 boys. Therefore we can write the ratio of girls to boys as:
8/16
Then we can simplify this ratio by dividing it by 8 to get:
1/2
So the answer is the ratio of girls to boys in the group in simplest form is 1/2.
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Solve this system of equations by graphing. First graph the equations, and then type the solution. y= x+3 y=2x
Yuliya22 [10]

Answer:

(3,6)

Step-by-step explanation:

Y=X+3

Y=X2

X+3=2X

X-2X= -3

-x=-3

x=3

then Y=2X

Y=2×3

Y=6

(3,6)

3 0
2 years ago
The propellers on the Titanic have a radius of 23.5 ft and weigh 38 tons each. If the propellers turn at 180 rpm, what would be
melamori03 [73]

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3 0
3 years ago
A circle with radius 3 has a sector with a central angle of 1/9 pi radians
Art [367]

The area of sector is 1.57 m²

<u>Explanation:</u>

Given:

Radius, r = 3 m

Central angle of a sector = 1/9π radians

Area of sector, A = ?

We know:

Area of sector, A = \frac{1}{2} r^2 \alpha

where,

α is the central angle in radians

On substituting the value we get:

A = \frac{1}{2} X(3)^2 X \frac{1}{9}X 3.14\\ \\A = 1.57 m^2

Therefore, the area of sector is 1.57 m²

5 0
3 years ago
Add the two expressions. 8k + 4 and 3k + 8 Enter your answer in the box.
GREYUIT [131]

Answer:

11k +12

Step-by-step explanation:

8k + 4 and 3k + 8

Combine like terms

8k + 4 + 3k + 8

8k+3k + 4+8

11k +12

4 0
3 years ago
Workout the area of the quarter of a circle with a radius of 8
QveST [7]

Answer:

16\pi

Step-by-step explanation:

We need to find 1/4 of the area of a circle with a radius of 8

Let r be radius

Area of a circle = r^{2} \pi

Substitute r with 8

Area of a circle = 8^2\pi =64\pi

Now, to find 1/4 of the area, we can create an equation \frac{64\pi }{4}={16\pi

The answer is 16\pi

Hope this helps :)

Have a spectacular day!

3 0
2 years ago
Read 2 more answers
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