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3 years ago

6

the number of right handed students in a mathematics class is nine times the number of left hand students. the total number of s

tudents in the class is 30. how many right handed students are in the class? how many left handed students are in the class?

1 answer:

rewona [7]3 years ago

7 0

Answer:

3 left handed and 27 right handed.

Step-by-step explanation:

9+1=10

30/10=3

3*9=27

30-27=3

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A disc has a diameter of centimeters while a mini disc has a diameter of centimeters. Write the ratio of the mini disc diameter

Dafna1 [17]

Answer:

2 : 3

Step-by-step explanation:

A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc diameter.

Answer: Let the diameter of the mini disc be $d_1$ while the diameter of the disc be $d_2$ . To get the ratio of the mini disc diameter to the disc diameter, we just simply have to divide the diameter of the mini disc by the diameter of the disc and then represent the fraction in ratio form. The ratio of the disc diameters is given by:

Ratio of the mini disc diameter to the disc diameter = Diameter of mini disc / diameter of disc

Ratio of the mini disc diameter to the disc diameter = $\frac{14}{21}=\frac{2}{3}$

Ratio of the mini disc diameter to the disc diameter = 2 : 3

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3 years ago

The community center has a pottery class each month. Each student pays $15 for the class and $27 for materials. This month the p

user100 [1]

15x+27x=714
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3 years ago

Will give BRAINLIEST <br><br> Find the area of each circle<br> . Round to the nearest tenth.

Oksi-84 [34.3K]

Answer:

13: 312yd squared

14: 907.5 rounded up but not rounded is 907.46

Step-by-step explanation:

this is because the formula is pi*r^2 so you'd

Step by step:

1. 20yd/2= 10 to get the radius for 13

2. substitute r in the formula pi*r^2 for 10 making it pi*10^2

3. multiply 10 by itself, 10*10=100

4. multiply pi by 100, 3.14*100= 314

314yd^2 is the answer for 13

14:

1. 34ft/2=17 to get the radius for 14

2. substitute r on the formula pi*r^2 for 17 making it pi*17^2

3. multiply 17 by itself, 17*17=289

4. multiply pi by 289, 3.14*289=907.46

5. round 907.46 to the nearest tenth, 907.5

907.5ft^2 is your answer

hope this helps :)

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3 years ago

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Damm [24]

Answer:

25

Step-by-step explanation:

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3 years ago

Read 2 more answers

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Paha777 [63]

Answer:

-2

Step-by-step explanation:

Just use 6-8 and you will get - 2

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3 years ago