The answer is B, 57 degrees. You can tell angle C is 57 degrees since 180-123 is 57 and both angles add up to 180 on a straight line. Then since the lines are parallel, angle a is 55 degrees because of alternate interior angle theorem. Then, a triangle’s angles add up to 180 so to figure out angle d, you do: 180- (55 + 57) which gives you 68. Since 55 + angle b + angle d = 180, you have to do 180 - (68+55) = 57 degrees. Hope this helps!

7 0

3 years ago

First One To Solve Correctly Gets Brainlyest

Annette [7]

Answer: Rounded to the nearest tenths place, it is 3.7 meters.

Step-by-step explanation:

$x^{2} + b^{2} = c^{2}$

Using the above formula, let's multiply 2.5 times 2.5 and 4.5 times 4.5.

2.5 times 2.5, or 2.5 squared, equals 6.25

4.5 times 4.5, or 4.5 squared, equals 20.25

$c^{2} - b^{2} = x^{2}$

Now, let's subtract 20.25 minus 6.25. The difference is 14.00.

What is the square root of 14? It is 3.74165739. Let's round that number to the nearest tenths place.

What is the number in the tenths place? It is 7. And--what is the number that comes after it? Well, it is 4. Therefore, the 7 should stay a seven. If the number next to the tenths place was five or greater, then we should add one.

6 0

3 years ago

Read 2 more answers

Round 34.4567 to the nearest cent

MariettaO [177]

Because 34.4567 is closer to 34.46 than to 34.45, so the answer is 34.46.

3 0

3 years ago

Angles A and B are the acute angles of a right triangle. If the tangent of A is 2.1445, then angle B measures

lina2011 [118]

Tan A = 2.1445
A = tan^(-1) 2.1445 = 64.999 ≈ 65°
In a right triangle:
A + B = 90°
65° + B = 90°
B = 90° - 65° = 25°
Answer:
A ) 25°

4 0

3 years ago