2 years ago

If two angles are supplementary and one angle is 81°, what does the second angle measure?

Mathematics

1 answer:

ankoles [38]2 years ago

8 0

Answer:

Step-by-step explanation: $\geq \\ \sqrt{x}$

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Find the measure of angle h

AnnZ [28]

Answer:

62 degrees

Step-by-step explanation:

Since we know 3 sides of the triangle, we can use law of cosines.

${gk}^{2} = {gh}^{2} + {kh}^{2} - 2(gh)(kh) \times \cos(h)$

${8}^{2} = {17}^{2} + {15}^{2} - 2(17(15) \times \cos(h)$

$64 = 289 + 225 - 510 \times \cos(h)$

$64 = 314 - 510 \times \cos(h)$

$- 250 = - 510 \times \cos(h)$

$\frac{250}{510} = \cos(h)$

$\frac{25}{53} = \cos(h)$

Take the arcos or cosine inverse

$\cos {}^{ - 1} = \frac{25}{53}$

Which is about 62 degrees.

7 0

2 years ago

PLEASE HELP ME asap Compare the two ratios by entering >, < , or = in the box.

Leto [7]

1/8 = 0.125
3/20 = 0.150

Therefore 1/8 < 3/20

7 0

3 years ago

PLZ HELP FIND R AND EXPLAIN

4vir4ik [10]

Answer:

r = 46

Step-by-step explanation:

as in the attachment, have created the CEF triangle by stretching lines.

hope it helps:)

good luck:)

8 0

3 years ago

How many minutes does it take a man to walk a mile if he walks at a rate of 4 feet per second

Serjik [45]

Answer:

1,320 seconds or 22 minutes to walk 1 mile

Step-by-step explanation:

5280 feet (1 mile) ÷ 4 feet per second = 1,320 seconds or 22 minutes

3 0

3 years ago

Elijah's workout at the gym consists of just the elliptical and treadmill. After burning 450 miles

Galina-37 [17]

Answer:

375

Step-by-step explanation:

12.5=1min

30min=?

30x12.5=357

6 0

2 years ago