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3 years ago

15

Which best describes this triangle? A. All sides are different lengths; one angle is obtuse. B. All sides are equal; all angles

are less than 90°. C. Two sides are equal; all angles are acute. D. Two sides are equal; one angle is obtuse.

2 answers:

motikmotik3 years ago

6 0

I believe he correct answers Is C

Phoenix [80]3 years ago

5 0

All sides are equal and less than 90 degrees

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klemol [59]

The complete table will be:

$Monday - 100\\ Tuesday-65\\ Wednesday- 120\\ Thursday-150\\ Friday-90\\ Saturday- 0\\ Sunday-175$

<u><em>Explanation</em></u>

Suppose, the number of sit-ups in Sunday is $x$

Mean is the simple average of some numbers. <u>For finding the mean number</u> of sit-ups per day, we need to <u>divide the 'total number of sit-ups' by the 'total number of days'</u>.

Here the total number of days is 7 and the total number of sit-ups for 7 days $= 100+65+120+150+90+0+x= 525+x$

Given that, the mean number of sit-ups per day is 100. So, the equation will be...

$\frac{525+x}{7}=100\\ \\ 525+x=700\\ \\ x= 700-525=175$

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