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Svetlanka [38]
3 years ago
13

Can someone help me with 19,20,and 21 will mark brainiest for the first answer and it has to be correct

Mathematics
1 answer:
Archy [21]3 years ago
3 0
Do you need help with all of these?

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Mel is 3 years older than Rahfat and Aurelio is twice as old as Mel. The sum of their ages is 57. How old is Mel.
julia-pushkina [17]
Mel's Age = xRahfat's Age = x-3Aurelio's Age = 2x 2x + x +x -3 = 574x -3 = 574x = 60x = 15So Mel's age is 15.Hope this helps! :D
3 0
3 years ago
Read 2 more answers
What is the length of arc ab?
7nadin3 [17]
Before we do anything we must convert radians to degrees using a table. pi/3 radians equals 60 degrees, meaning the central angle of this arc is 60 degrees. This also tells us that the length of the arc is 1/6 of the whole circumference. All we have to do now is calculate the circumference which is diameter x pi.

arc = 1/6 pi x 36
arc = 6pi cm

4 0
4 years ago
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Please help I will mark brainlist
IRINA_888 [86]

Answer:

False hope this helps

Step-by-step explanation:

3 0
3 years ago
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Marshall like to use interval training. He jogs at 200 meters per minute and runs 250 meters per minute. He runs 8 km every day.
Ahat [919]

Answer:

He runs 8 km every day. Write an equation in standard is not

Step-by-step explanation:

logo go please

7 0
3 years ago
Point
goldfiish [28.3K]

Answer:

37.68 or 37.7

Step-by-step explanation:

Circumference of a circle: 2πr

2 x 3.14 = 6.28

6.28 x 6 = 37.68 or 3.7

5 0
3 years ago
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