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2 years ago

Doris takes a survey of her class and finds that 2 of the 20 students in class are left-handed.

1 answer:

6 0

Hey there, Alex!

She would expect 55 of them to be left handed.

Work: 550 / 20 = 27.5

27.5 x 2 = 55

Hope I was able to help!

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X2+y2=r2 Solve for y

Kaylis [27]

Answer: $y=\sqrt{r^{2} -x^{2} }$

Step-by-step explanation:

x^2+y^2=r^2 --> subtract x^2 to other side

y^2=r^2-x^2 --> square root both sides

y=sqrt(r^2-x^2)

3 0

2 years ago

Find the median of the following data set.<br><br> 0.48, 0.66, 1.02, 0.82, 0.7, 0.94

kari74 [83]

Answer:

0.76

Step-by-step explanation:

0.48, 0.66, 1.02, 0.82, 0.7, 0.94

Organize the numbers from least to greatest.

0.48, 0.66, 0.7, 0.82, 0.94, 1.02

Then find the middle (Median is the middle).

0.48, 0.66, 0.7, |?| 0.82, 0.94, 1.02

Take the two numbers closest to the middle. Add them.

0.7 + 0.82

= 1.52

Divide that with 2.

= 0.76

8 0

2 years ago

You leave a pile of sand in your backyard on a windy day. Every minute the wind blows away 10 percent of the remaining sand.You

Leona [35]

Answer:200cubic sand

Step-by-step explanation:

cubic means 3 times. And you lose 100 sand from wind 10 times.

6 0

2 years ago

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Find the value of x.

spin [16.1K]

Answer:

Step-by-step exg

4 0

2 years ago

What is the square root of 199 lie between

Tomtit [17]

Hi!

I'm assuming the question means what integers, so let's figure it out.

Starting from 12, 12 squared is 144, or the square root of 144 is 12.

13 squared is 169, or the square root of 169 is 13.

14 squared is 196, or the square root of 196 is 14.

15 squared is 225, or the square root of 225 is 15.

Based on that list of numbers, we can determine that the square root of 199 lies between the square root of 196 and the square root of 225 -- aka 14 and 15.

8 0

2 years ago

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