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3241004551 [841]
3 years ago
8

Please help, find the length of line segment KL. Here are the choices:

Mathematics
1 answer:
STatiana [176]3 years ago
4 0
3.6^2 - 2.4^2
= 12.96 - 5.76
=  7.2

KL = square root 7.2
KL = 2.7

answer is <span>c) 2.7</span>
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On a piece of paper, use a protractor to construct right triangle ABC with AB=3 in. , m∠A=90° , and m∠B=45° .
n200080 [17]

Option A: $A C=3 \ in is true about the triangle.

Explanation:

The measurements of the right triangle ABC is A B=3 \ in , m \angle A=90^{\circ} and \mathrm{m} \angle{B}=45^{\circ}

The image of the triangle having these measurements is attached below:

Option A: $A C=3 \ in

Using Pythagorean theorem, we have,

tan \ 45^{\circ}= \frac{AC}{3}

   1\times 3= AC

         3=AC

Thus, the length of AC is $A C=3 \ in

Therefore, Option A is true about the triangle.

Hence, Option A is the correct answer.

Option B: $B C=3\ in

Using Pythagorean theorem, we have,

cos \ 45^{\circ}=\frac{3}{BC}

     BC=\frac{3}{cos \ 45^{\circ}}

     BC=\frac{3}{0.707}

     BC=4.24

Thus, the length of BC is BC=4.24 \ in

Therefore, Option B is not true about the triangle.

Hence, Option B is not the correct answer.

Option C: $B C=6\ in

Using Pythagorean theorem, we have,

cos \ 45^{\circ}=\frac{3}{BC}

     BC=\frac{3}{cos \ 45^{\circ}}

     BC=\frac{3}{0.707}

     BC=4.24

Thus, the length of BC is BC=4.24 \ in

Therefore, Option C is not true about the triangle.

Hence, Option C is not the correct answer.

Option D: $A C=6\ in

Using Pythagorean theorem, we have,

tan \ 45^{\circ}= \frac{AC}{3}

   1\times 3= AC

         3=AC

Thus, the length of AC is $A C=3 \ in

Therefore, Option D is not true about the triangle.

Hence, Option D is not the correct answer.

3 0
4 years ago
Pls help i need it for a test
likoan [24]

Answer: 680

Step-by-step explanation: 1. Find the smaller cake first with (lw*amount of sides) and then add it to the larger cake using the same formula.

6*6*6+10*10*6

This equals 816

2. Find the amount not frosted. The bottom and the connection. Simply, (lw).

6*6+10*10

This equals 136

3. Subtract 136 from 816.

816-136= 680 sq inches

7 0
3 years ago
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