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3 years ago

Please help, I have an algebra test tomorrow and i'm trying to understand problems like this.

Mathematics

1 answer:

Sonja [21]3 years ago

3 0

Answer:

L=P/2-W

Step-by-step explanation:

P=2(L+w) - Solve for L

1) Use the distributive property on the right side of the equation:

P=2L+2w

2) Subtract both sides by 2w:

P-2w=2L

3) Divide both sides by 2 to Isolate L:

P/2-W=L

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Answer:

Step-by-step explanation:

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2 years ago

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Which of the following sets of numbers could be the lengths of the sides of a triangle? A. 3 ft, 6 ft, 9 ft B. 3 ft, 5 ft, 7 ft

Whitepunk [10]

Answer:
<span>B. 3 ft, 5 ft and 7 ft
</span>
Explanation:
In any triangle, the sum of any two sides must be greater that the third one.

Therefore, to know if the given sides represent a triangle or not, all what we will do is add the two short sides and compare the result to the largest one.
We would have 3 options:
sum of short sides > longest side ......> It is a triangle
sum of short sides < longest side ......> It is not a triangle
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Now, for the given:
1- Option A:
sum of short sides = 3 + 6 = 9 ft which is equal to the longest side
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2- Option B:
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4- Option D:
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3 years ago

20. what us the area of the figure:

Varvara68 [4.7K]

If the angle in B is 45º, that means the angle in A is also going to be 45º, considering it's a right triangle, so AC and BC are they have the same length.
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Now that you know that both AC and BC equal 12, you can find the area by just multiplying them and then diving them by 2. (The formula for the area of a triangle is half base multiplied by height, and in a right triangle, if a cathetus is the base, the other cathetus<span> will be the height)

And so the area is equal to 72.</span>

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