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Licemer1 [7]
2 years ago
13

Which property can be used to expand the expression -2(3/4*+7)?

Mathematics
1 answer:
nika2105 [10]2 years ago
7 0

Answer:

C. The distributive property

Step-by-step explanation:

The distributive property of binary activities is generalized in mathematics by the distributive law of Boolean algebra and elementary algebra. Distribution applies, in propositional logic, to two clear substitution laws. The rules allow one to reformulate, within logical facts, conjunctions and disjunctions.

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Which weights are within 2 standard deviations of the mean? select three options. 8.4 lbs 8.9 lbs 9.5 lbs 10.4 lbs 10.9 lbs
djverab [1.8K]

The weights are within 2 standard deviations of the mean are 8.9 lbs, 9.5 lbs and 10.4 lbs

<h3>How to determine the weights?</h3>

The given parameters are:

  • Mean, μ = 9.5
  • Standard deviation, σ = 0.5

The weights within 2 standard deviation is represented as:

μ - 2σ ≤ x ≤ μ + 2σ

Substitute known values

9.5 - 2(0.5) ≤ x ≤ 9.5 + 2(0.5)

Evaluate the product

9.5 - 1 ≤ x ≤ 9.5 + 1

Evaluate the sum

8.5 ≤ x ≤ 10.5

This means that the weights are between 8.5 and 10.5 (inclusive)

Hence, the weights are within 2 standard deviations of the mean are 8.9 lbs, 9.5 lbs and 10.4 lbs

Read more about standard deviation at:

brainly.com/question/11743583

5 0
2 years ago
Given a situation involving a dilation, how do you determine the scale factor.
USPshnik [31]

Answer:

See explanation below.

Step-by-step explanation:

The scale factor can be found by dividing two corresponding side lengths. For instance, if you have two triangles, divide the new length of the larger or smaller triangle by the same side length of the original.

If the side length of the new was 9 and the old was 3 then the scale factor would be 9/3 = 3.

If it were flipped then the new would be 3 and the old would be 9. So the scale factor would be 3/9 = 1/3.

4 0
3 years ago
Certain car manufacturers install a gauge that tells the driver how many miles they can drive until they will run out of gas. A
cluponka [151]

Answer:

that a hard question

Step-by-step explanation:

i tried to use a calculator and graphs to solve it but I couldn't

7 0
3 years ago
Which choices are equivalent to the expression? √(5) x √(20)
statuscvo [17]

Answer:

10 is the answer

Step-by-step explanation:

You have to multiply with whats inside the roots. you would have \sqrt{5}  times \sqrt{20}  will give you \sqrt{100}  which is 10

8 0
3 years ago
Stefans bikes renta bikes for $20 plus $7 per hour. shawna paid $69 to rent a bike. for how many hours did she rent the bike? ​
Katarina [22]

Answer:

7 hours

Step-by-step explanation:

First you subtract 20 from 69, as the starting fee. That leaves you with 49. 49/7 = 7 hours

4 0
3 years ago
Read 2 more answers
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