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jeka94
3 years ago
13

3.

Mathematics
2 answers:
Mazyrski [523]3 years ago
8 0
Answer: A

Explanation:
lana66690 [7]3 years ago
3 0

Answer:

a

Step-by-step explanation:

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plz help quick. the sum of two numbers is 11. Three times the first number minus the second number is -3. what are the numbers?
Lerok [7]

Answer:

the first number is 2, the second number is 9 :)

Step-by-step explanation:

brainliest? :)

6 0
3 years ago
Suppose the average price for new cars in 2012 has a mean of $30,100 and a standard deviation of $5,600. Based on this informati
KatRina [158]

Answer:

($13,300,$46,900)

Step-by-step explanation:

We are given the following in he question:

Mean, μ = $30,100

Standard Deviation, σ = $5,600

Chebyshev's Theorem:

  • According to  theorem atleast 1 - \dfrac{1}{k^2}  percent of data lies within 2 standard deviations of mean.
  • For k = 3,

1 -\dfrac{1}{(3)^2} = 0.889 \approx 89\%

Thus, 89% of data lies within three standard deviation of mean.

\mu - 3(\sigma) = 30100 - 3(5600) = 13300\\\mu + 3(\sigma) = 30100 + 3(5600) = 46900

Thus, we expect at least 89% of new car prices to fall within ($13,300,$46,900)

3 0
3 years ago
On Friday, 80 children and 48 adults went to a movie. What was the ratio of children to adults? A 5 to 3 B 10 to 4 C 6 to 3 D 2
Setler79 [48]
A .  Because one you make the ratio 80:48 you simplify (divide until you can divide anymore ).
7 0
3 years ago
Read 2 more answers
Fruit Slice Flavor Small Bag Medium Bag Large Bag Orange 20 40 60 Grape 10 20 30 Cherry 5 10 15 Total Slices 35 70 105 Best Ever
Maksim231197 [3]
It depends on how much its the total

7 0
3 years ago
Read 2 more answers
if your bicycle tire has a diameter of 9 inches. how many rotations does each tire make if you travel 300 feet?
Vesnalui [34]
Step One
Calculate the number of feet traveled in 1 rotation.

Formula
C = π*d
P = 3.14
d = 9 inches = 9/12 feet = 3/4 of a foot.

C = 3.14 * 3/4 = 2.355 So that means that every time the tire turns around 1 complete turn, the distance traveled on the ground is 2.355 feet.
 
Step Two
Figure out the number of revolutions.
1 revolution = 2.355 feet
x revolutions = 300 feet.

1/x = 2.355/ 300  Cross multiply
2.355 feet * x = 1 rev * 300 feet
2.355 x = 300 rev Divide by 2.355
x = 300 / 2.355 
x = 127.39 revolutions. <<<< Answer

8 0
3 years ago
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