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3 years ago

Rewrite the following without an exponent (2/7)^-1

Mathematics

1 answer:

MrMuchimi3 years ago

5 0

Answer:

7/2

Step-by-step explanation:

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Match each concept with its key characteristic.

Crank

1. It is the subset of a group - Group sample.

2. It equally favors all members of a group sample - Random sample.

3. It collects data on members of a group - Survey.

4. It does not equally favor all members of a group - Biased sample.

5. It includes all members of a group - Population.

6. It analyzes data collected from a group - Mean.

I have matched all concepts in accordance with statistical use, hope it helps.

6 0

4 years ago

Need help homework due tomorrow

ankoles [38]

Answer:

14.5 kg

Step-by-step explanation:

Arrange the numbers in increasing order, which will give

8kg, 8kg, 14kg, 15kg, 17kg, 19kg

You then find the middle number(s), which is [14kg & 15kg] in this case.

Then you add the middle numbers and divide by 2, hence

$\frac{14kg+15kg}{2} = \frac{29kg}{2} = 14.5 kg$

8 0

2 years ago

Read 2 more answers

I need help on question 3

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

21-3^2+2

3 to the second power is 9

then, 21 - 9 + 2

left to right.....

21 - 9 = 12

12+2=14

4 0

3 years ago

1) A ball is dropped from a height of 50 feet. How long after it is dropped will it reach a height of 18 feet?

Nookie1986 [14]

Answer: 1.41 seconds

Step-by-step explanation:

The problem gives the initial velocity by saying "dropped." This indicates a velocity of zero. Acceleration can also be found because the object is in free fall. It would experience the acceleration of gravity. We can use the kinematic equation:

$(y_f-y_i)=V_it+\frac{1}{2}at^2$

The velocity term completely cancels because the object was dropped with an initial velocity of 0.

$(18-50)=\frac{1}{2} (32.17)t^2\\$

$-32=-16.085t^2\\t=\sqrt{1.989} =1.41s$

8 0

3 years ago

How do I decide whether a relation is a function or not ?

uysha [10]

<span>You could set up the relation as a table of ordered pairs. Then, test to see if each element in the domain is matched with exactly one element in the range. If so, you have a function!</span>

4 0

3 years ago