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3 years ago

The ratio of boys to girls in homeroom is 2:3. If there are 8 boys, how many girls are there?

Mathematics

1 answer:

VladimirAG [237]3 years ago

7 0

Answer:

There are 12 girls. You have to multiply 2x4 which gives you 8 so multiply 3x4 and it gives you 12

Step-by-step explanation:

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Find the measure of the are or angle indicated. Assume that lines which appear tanget are tangents.

Brilliant_brown [7]

9514 1404 393

Answer:

85°
60°

Step-by-step explanation:

1. Angle JKL is half the measure of the intercepted arc JK.

(1/2)JK = 1/2(360° -190°) = (1/2)(170°) = 85°

angle JKL is 85°

2. The angle between tangents is the supplement of the intercepted arc.

angle JKL = 180° -(360° -240°)

angle JKL = 60°

8 0

3 years ago

A cube has a volume of 125 cubic inches. What is the length of each edge?

Bingel [31]

The formula for the volume of a cube is V = a^3.

We know the volume is 125 cubic inches.

125 = a^3

Take the third square root

5 = a

The length of each edge is 5 inches

3 0

3 years ago

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I tried to work this out, help

Oksanka [162]

Answer:

∠2

Step-by-step explanation:

Complementary angles are angles that add up to 90°

So ∠3 + ∠2 = 90°

4 0

3 years ago

Read 2 more answers

Sandra has designed this open container. The height of the container is 35 cm.

pogonyaev

Answer: there is no figure so no answer

Step-by-step explanation: with out the rest of the equations there is no way to answer this.

7 0

3 years ago

The diameter of a spindle in a small motor is supposed to be 4.1 millimeters (mm) with a standard deviation of 0.1 mm. If the sp

adoni [48]

Answer:

The null hypothesis is $H_0: \mu = 4.1$

The alternate hypothesis is $H_a: \mu \neq 4.1$

Step-by-step explanation:

The diameter of a spindle in a small motor is supposed to be 4.1 millimeters

This means that the null hypothesis is that the diameter has the supposed value, that is, $H_0: \mu = 4.1$

If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 41 spindles to determine whether the mean diameter has moved away from the required measurement.

Tests if it has moved away, that is, if the mean is different from the specified value of 4.1. So the alternate hypothesis is $H_a: \mu \neq 4.1$

5 0

3 years ago