2 years ago

How do you find perimeter?

Mathematics

1 answer:

Wewaii [24]2 years ago

7 0

All you do is add up all of the side lengths, and you got the perimeter.

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How many solutions does this equation have? 10 + 5x 15 = 4 A) no solution B) exactly one solution C) exactly two solutions D) in

Tatiana [17]

Answer:

B) exactly one solution

Step-by-step explanation:

4 0

2 years ago

In ΔABC, the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, and 13.6 centimeters, respectively.

Irina-Kira [14]

Given the values of the three sides of the triangle, we can apply the Cosine Law to find the angles of the triangle. Recall that for we can express the value of c through the equation below.

$c^{2} = a^{2} + b^{2} - 2abcosC$

Rearranging this equation, we can find the value ∠C as shown below.

$\cos C = \frac{a^{2}+b^{2}-c^{2}}{2ab}$
$C = cos^{-1} (\frac{a^{2}+b^{2}-c^{2}}{2ab})$

We can apply the same reasoning for finding the value of ∠B as shown.

$B = cos^{-1} (\frac{a^{2}+c^{2}-b^{2}}{2ac})$

Plugging in the values of the sides (see image attached) from the given. It will now be straightforward to compute for ∠B and ∠C.

$C = cos^{-1} (\frac{22.5^{2}+18^{2}-13.6^{2}}{2(22.5)(18)})$
$C \approx 37.19$

$B = cos^{-1} (\frac{22.5^{2}+13.6^{2}-18^{2}}{2(22.5)(13.6)})$
$B \approx 53.13$

Answer: ∠C = 37.19° and ∠B = 53.13°

7 0

3 years ago

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there is 135 feet of masking tape on a roll henry has 6 rolls. how many feet of masking tape does he have in all?

charle [14.2K]

Henry has 810 feet of making tape

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3 years ago

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The eye of a dinosaur has 9 yellow, 2 white, 4 black,

vivado [14]

20:5
The total number of jelly beans is 20, and there are 5 orange jelly beans. This is a total to part ratio because it’s comparing the entirety to a part.

8 0

3 years ago

The correct answer is 1in= 5ft my teacher went over it.

dangina [55]

Ummmmm yes good job

8 0

2 years ago