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3 years ago

Complete the two column proof.

Mathematics

1 answer:

Vlad1618 [11]3 years ago

6 0

Answer:

not sure about 2 and 5 but 4 is definition of congruency

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Step-by-step explanation:

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2 years ago

Use the expression 3n plus 5P +2+n

Lera25 [3.4K]

Answer:

Step-by-step explanation:

3n + 5p + 2 + n

Add up all the 'n's : 4n + 5p + 2

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3 years ago

A factory makes car batteries. The probability that a battery is defective is 1/4. If 400 batteries are tested, about how many a

notka56 [123]

Answer:

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3 years ago

Hello there, <br><br> can someone please help me with this question

monitta

Answer:

10 sides.

Step-by-step explanation:

Two same interior angles + 72 degrees = 360.

Thus, the interior angle of the polygon is $\frac{360-72}{2} =144$ .

The formula to find the interior angle of a polygon is $\frac{180(n-2)}{n}$

$\frac{180(n-2)}{n} =144$

Multiply both sides by n:

$\frac{180\left(n-2\right)}{n}n=144n$

$180\left(n-2\right)=144n$

Expand:

$180n-360=144n$

Add 360 to both sides:

$180n-360+360=144n+360$

$180n=144n+360$

Subtract 144n from both sides:

$180n-144n=144n+360-144n$

$36n=360$

Divide both sides by 36:

$\frac{36n}{36}=\frac{360}{36}$

$n=10$

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3 years ago

If a- 2b +3c =0 prove that a³ -8b³+ 27c²= - 18abc

inna [77]

Step-by-step explanation:

the answer is in the photo as attached

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3 years ago

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