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Alex777 [14]
3 years ago
9

In a file of 10 records with 2 errors, 5 are examined. Let the random variable be the number of errors.​

Mathematics
1 answer:
emmasim [6.3K]3 years ago
8 0
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What is the arc length S what is shown below?
Solnce55 [7]

Answer:

  14 cm

Step-by-step explanation:

The applicable formula is ...

  s = rθ

  s = (7 cm)(2) = 14 cm

3 0
3 years ago
Please help me with this.
-Dominant- [34]

Answer:

3

Step-by-step explanation:

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

3^4 +9^2÷3^3-9^2

81+81÷27-81

81+3-81

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5 0
3 years ago
The Watson family and the Thompson family each used their sprinklers last summer. The Watson family's sprinkler was used for hou
o-na [289]

This question s incomplete, the complete question is;

The Watson family and the Thompson family each used their sprinklers last summer. The Watson family's sprinkler was used for 15 hours. The Thompson family's sprinkler was used for 30 hours.

There was a combined total output of 1050 of water. What was the water output rate for each sprinkler if the sum of the two rates was 55L per hour  

Answer:

The Watson family sprinkler is 40 L/hr while Thompson family sprinkler is 15 L/hr

Step-by-step explanation:

Given the data in the question;

let water p rate for Watson family and the Thompson family sprinklers be represented by x and y respectively

so

x + y = 55  ----------------equ1

x = 55 - y ------------------qu2

also

15x + 30y = 1050

x + 2y = 70 --------------equ3

input equ2 into equ3

(55 - y) + 2y = 70

- y + 2y = 70 - 55

y = 15

input value of y into equ1

x + 15 = 55

x = 55 - 15

x = 40

Therefore, The Watson family sprinkler is 40 L/hr while Thompson family sprinkler is 15 L/hr

8 0
3 years ago
In a rectangle the ratio of the length to the width is 5/6. If the width is 30, find the length.
Over [174]

Answer:

the length of the rectangle is 25

4 0
3 years ago
Read 2 more answers
What is the answer to -3/4 (2)(-6) in fraction form
nasty-shy [4]

I'm assuming the question looks like this?

\frac{-3}{4} (2)(-6)

If so then the answer should be:

\frac{-3}{4} (2)(-6)=\frac{-3}{4} (-12)=9

Hope this helps!

4 0
4 years ago
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