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luda_lava [24]
2 years ago
5

10 points please help and marked brainlyist

Mathematics
1 answer:
kherson [118]2 years ago
6 0

Answer:

A.

Sample 1 mean: 6.375

Sample 2 mean: 6.375

Sample 3 mean: 6.625

B.

Range of sample means: 0.25

C.

The first and last boxes should be checked, as they are true.

Step-by-step explanation:

To calculate the mean you must add all of the numbers together and then divide the sum by the quantity of numbers. Ex: 3+7+8+3+7+9+6+8 = 51.

51/8 = 6.375.

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The Air Quality Index, or AQI, measures how polluted the air is in your city and assigns a number based on the quality of the ai
tatuchka [14]

Answer:

it is actually c.135 days on edge just took the test

Step-by-step explanation:

took the test

3 0
3 years ago
Compute the indicated derivative U(t) = 5.1t^2 − 1.7t; U'(6)
Nezavi [6.7K]

Answer: 59.5

Step-by-step explanation:

U(t) = 5.1t^2 − 1.7t

U'(t)=2*5.1t-1.7

U'(t)=10.2t-1.7

U'(6)=10.2(6)-1.7

U'(6)=61.2-1.7

U'(6)=59.5

6 0
1 year ago
If the ordered pair (-5/2, y) lies on the graph of y=7-2x, find the value of y.
Viefleur [7K]

The correct answer is option B which is the value of Y will be 12.

<h3>What is an equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

Given that:-

If the ordered pair (-5/2, y) lies on the graph of y=7-2x,

The value of Y will be calculated as:-

Y = 7 - 2x

Y = 7 - 2 ( -5/2 )

Y = 7 - ( - 5 )

Y = 7 + 5

Y = 12

Therefore the correct answer is option B which is the value of Y will be 12.

To know more about equations follow

brainly.com/question/2972832

#SPJ1

8 0
2 years ago
A student solved z + (-0.72) = -2.5 for z using the
N76 [4]

Answer:

  • Mistake in step1

Step-by-step explanation:

<u>Given</u>

  • z + (-0.72) = -2.5

<u>Solving in steps</u>

  • 1. ⇒ z + (-0.72) - (-0.72) = -2.5 - (-0.72)
  • 2. ⇒ z = - (2.5 - 0.72)
  • 3. ⇒ z = - 1.78

The student's mistake was adding (-0.72) instead of - (-0.72) or 0.72

5 0
3 years ago
Read 2 more answers
Solve the following equation. 4 - 7x 10 = 15 - 6x - 8
Oksana_A [137]
4-70=7-6x
-64-7=6x
-71=-6x
71/6=x
6 0
3 years ago
Read 2 more answers
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