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3 years ago

8

A bag contains 120 marbles. Some are red and the rest are black. There are 19 red marbles for every black marble. How many red m

arbles are in the bag?
a
1,080
b
114
c
361
d
101

1 answer:

Georgia [21]3 years ago

3 0

Well if every red marbles is 19, and the rest are black, we need to subtract 120-19. And that equals 101

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The length of the brace required is 4.3m

What is sine rule?

In a ΔABC a, b and c are the sides and A, B and C are angles then,

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We can find the length, l as shown below:

Let AB=3m, BC=2m and AC=l

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