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Flura [38]
3 years ago
11

Which statements are true? Check all that apply.

Mathematics
2 answers:
Colt1911 [192]3 years ago
6 0

Answer:

A. mArc C B = 120°

C. m∠COB = 2(m∠CAB)  

D. m∠COB = 120°

german3 years ago
4 0

Answer:

A,C,D

Step-by-step explanation:

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A machine cuts 25 circuit boards every 5 minutes. What is the unit rate of production for the machine?
irina1246 [14]

Answer:

25 divided by 5 = 5, so the unit rate is 5 circuit boards every minute.

8 0
3 years ago
Two angles of a quadrilateral are 40 degree and 60 degree and the ratio of remaining two angles is 7:6. The degree measure of re
Semenov [28]

Answer:

140,120

Step-by-step explanation:

sum of angles in a quadrilateral =360

sum of the 1st two angles=60+40=100

360-100=260

the ratio of the remaining angles 7:6

therefore:

\frac{7}{13}  \times 260

=140

for the second angle

260-140=120

5 0
3 years ago
Kim is 5 years older than her brother Jack. If the sum of their ages is 21, find each of their ages.
yarga [219]

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Answer:

  • Kim is 13
  • Jack is 8

Step-by-step explanation:

Let k represent Kim's age. Then Jack's age is k-5 and the total of their ages is ...

  k + (k -5) = 21

  2k = 26 . . . . . . . add 5, collect terms

  k = 13 . . . . . . . . . divide by 2; Kim's age

  k -5 = 8 . . . . . . . Jack's age

Kim is 13; Jack is 8.

7 0
3 years ago
Please helppp with this​
kiruha [24]

Answer:

3 one

Step-by-step explanation:

7 0
4 years ago
Verify the identity. <br><br> cos 4x + cos 2x = 2 - 2 sin^2(2x) - 2 sin^2 x
Advocard [28]
So are you trying to simplify one side to get it to look like the other?
8 0
3 years ago
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