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kupik [55]
2 years ago
7

please help i’ll give brainliest

Mathematics
1 answer:
taurus [48]2 years ago
4 0

Answer:

3. 16.67

4. 25

Step-by-step explanation:

3. x+2÷8=14/6 (similar triangles have corresponding proportional sides)

x+2=(7×8)/3

x=56/3-6/3 (LCM)

x= 50/3

4. 27/72= (-4+4x)/64

3/2= (-1+x)/16

-1+x=24

x=24+1

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Answer:

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Step-by-step explanation:

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Nataliya [291]

Answer:

C) (a-12b)(a+12b)

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a^2-144b^2 = (a-12b)(a+12b)

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This can be explained by multiplying them.

                (a-12b)

<u>                 *(a+12b)         </u>

                  a²- 12ab

  <u>                     +12ab - 144b²      </u>

<u>                     a²    +0    - 144b²    </u>

We see we get the same answer as applying the formula above.

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2 years ago
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Alex17521 [72]

Answer:

Size 50

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You should choose the larger sample size.  This is because if you take the mean, it will help to cancel out outliers.  For instance, most people exercise half an hour.  With sample size of 10, there might be one person who doesn't exercise, thus dragging down the mean.  A larger sample size would have a greater ratio of "average" people.

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