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Softa [21]
3 years ago
13

What is the standard deviation of the following data? If necessary, round your answer to two decimal places. 9, 10, 10, 8, 7, 11

, 12, 9
Mathematics
1 answer:
Ierofanga [76]3 years ago
8 0
The standard deviation is approximately 9.5
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A car travelled a distance of D =320 kilometers for T =5.0 hours at a constant rate use the formula D =R. T To find the speed (R
motikmotik

The speed of car is 64 kilometer per hour

<em><u>Solution:</u></em>

Given that car travelled a distance of D = 320 km for T = 5.0 hours

To find: speed (R) of the car in km per hour

<em><u>Formula given:</u></em>

D = R. T

where "D" is the distance

"R" is the speed of car

"T" is the time taken

<em><u>Substituting the given values in above formula we get,</u></em>

320 = R \times 5.0\\\\R = \frac{320}{5}\\\\R = 64

Thus the speed of car is 64 kilometer per hour

We cannot round the answer to nearest tenth, since answer is not in decimal

5 0
3 years ago
30. Multiply a decimal less than 1 and a whole number._____________________
Talja [164]
30.
the multiplication of a decimal less than 1 and a whole number is always smaller than the whole number, because we are taking a fraction of the whole number.

31.
the product of a decimal greater than 1 and a whole number is always greater than the whole number because we are scaling the whole number.
3 0
3 years ago
Mark tossed six balls while playing a number game. Three ball landed in one section, and three balls landed in another section.
luda_lava [24]
Mark's score could be 120,000. Each ball would be worth 20,000 points and since 2,000 times 6 is 120,000, that's how many points he could have. 
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3 years ago
Show each step to solve the equation below:<br><br> 4x+5=x+2
Eduardwww [97]

4x + 5 = x + 2
Subtract 2 from both sides.

Your equation will be: 4x+3=x
Subtract 4x from both sides.
Yoir equation will be: 3= -3x
Divide by -3x on both sides.

Your final answer: x=-1
5 0
3 years ago
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The graph of quadratic parent function fwas transformed to create the graph of
Margarita [4]
H is the correct answer. Y= (x+2)^2-5
2 to the left x+2=0 x=-2
5 dpwn
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2 years ago
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