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3 years ago

(PLSSSSS HELP ONLY ANSWERS I REALLY NEED HELP)

Mathematics

1 answer:

Afina-wow [57]3 years ago

3 0

Answer:

✓20^2-12^2

✓400-144

✓256

A=l*w

16*12

=192

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Which expression is the result of factoring the expression below by taking out its greatest common

Andreas93 [3]

Answer:

4(3x^2 + 2)

Step-by-step explanation:

The greatest common factor is the largest positive integer that divides evenly into all numbers with zero remainder. The largest number that goes into 12 and 8 is 4.

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3 years ago

Prove that a lie divides two sides of a triangle proportionally is parallel to the third side. Be sure to create and name the ap

Tems11 [23]

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3 years ago

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Step-by-step explanation:

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2 years ago

S = 4LW+2WH; S = 200, L = 8, W = 5. (Surface area of a special rectangular box)<br> H=

zysi [14]

Answer:

H=110

Step-by-step explanation:

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2 years ago

In a race between 18 people, how many ways can the top 5 finishers be arranged?

snow_lady [41]

Answer:

Step-by-step explanation:

This is permutation, since order matters. The formula for us is

₁₈P₅ = $\frac{18!}{(18-5)!}$ which simplifies to

₁₈P₅ = $\frac{18*17*16*15*14*13!}{13!}$

The factorial of 13 cancels out on the top and bottom leaving you with

₁₈P₅ = 18 × 17 × 16 × 15 × 14

which comes to 1,028,160 ways

Another way to look at it is: the first 5 people of 18 finish and the others you don't care about. Once the first place person is first, there are only 4 of the 18 left to finish in second place. Then there are only 3 left to finish in third place, etc. So if we use that reasoning, we don't even need to use the formula, we can just say

18 * 17 * 16 * 15 * 14 and those are the first 5 people of 18 to finish.

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3 years ago