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Fittoniya [83]
3 years ago
10

What is the reference angle for 120°? A. 30° B. 45° C. 60° D. 120° E. 240°

Mathematics
1 answer:
dusya [7]3 years ago
4 0

Answer:

C

Step-by-step explanation:

120° is an angle in the second quadrant.

The reference angle is the related acute angle in the first quadrant, that is

reference angle = 180° - 120° = 60° → C

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I need help from 1 to 13 please!
valina [46]
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8 0
3 years ago
What is the step by step and on this expression 4b+9+b
AleksAgata [21]

Answer:

5b + 9

Step-by-step explanation:

You are essentially trying to simplify the expression given to you. To do so, combine terms with like terms:

4b + 9 + b

In this case, combine all terms with the same amount of variables, b.

(4b + b) + 9 = 5b + 9

5b + 9 is your answer.

~

3 0
3 years ago
Read 2 more answers
Can someone please help me with these problems. Thank you
grin007 [14]
P(3) = 1/6
P(odd) = 3/6 = 1/2 ........(odd = 1,3,5)
P(less than 5) = 4/6 = 2/3.....(less than 5: 1,2,3,4)
P(prime) = 3/6 = 1/2 ..........(prime: 2,3,5)
P(4 or 6) = 2/6 = 1/3
P(not 1) = 5/6 .....................(not 1: 2,3,4,5,6)

hope it helps
6 0
3 years ago
Read 2 more answers
A factory makes 1200 shirts every 6 hours. The factory makes shirts for 9 hours each workday. enter the fewest number of workday
kupik [55]

Answer: 7

Step-by-step explanation:

9/6 = 1.5

1200 x 1.5 = 1800 (t-shirts a work day)

12 600/1800 = 7

7 work days

5 0
3 years ago
The areas of similar triangles `DeltaABC` and `DeltaDEF` are equal. If the longest side of `DeltaDEF` measures 25 units, what is
Ganezh [65]

If two triangles are similar, it means that one is the scaled version of the other.

In similar triangles, correspondant angles are the same, and correspondant lengts are all in the same ratio r. The ratio between the areas is r^2.

So, for example, if the scale ratio is r = 2, all sides of the new triangle are twice as long as the sides of the old one, and the area of the new one is r^2 = 4 times the area of the old one.

Since in this case the two areas are equal, their ratio is r^2 = 1. This implied that also r = 1, which means that also correspondant sides are equal.

In other words, these two triangles are not only similar, but congruent. This means that, in particular, all correspondant sides have same length, so the longest side of ABC has a length of 25 as well.

3 0
3 years ago
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