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3 years ago

5

1 Without using tables, find sin 60° given that sin 60° = 2 sin 30° cos 30º.

1 answer:

earnstyle [38]3 years ago

8 0

(60 = 2 x 4) would be 92 divided by 9 mark me brainlist

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In a jar, 25% of the marbles are red. If there are 45 red marbles in the jar, how many marbles are in the jar altogether?

Oxana [17]

Answer:

There are 180 marbles in the jar

Step-by-step explanation:

Let x = number of marbles in the jar

x * 25% = number of red marbles

x * .25 = 45

Divide each side by .25

x *.25/.25 = 45/.25

x =180

There are 180 marbles in the jar

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Step-by-step explanation:

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