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3 years ago

HELP 30 POINTS!!!!!

Mathematics

1 answer:

Tamiku [17]3 years ago

5 0

by pythagorean formula, the last side is √(61)

by cos rule

cos A

$= \frac{ {6}^{2} + 61 - {5}^{2} }{2 \times 6 \times \sqrt{61} } \\ = \frac{72}{12 \sqrt{61} } \\ = \frac{6}{ \sqrt{61} }$

A = 39.81

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Answer:

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Step-by-step explanation:

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Answer:

1. 35 boys and 28 girls

2. 42 long-sleeved shirts

3. 40 total outfits

Step-by-step explanation:

Ratio of Boys to Girls is 5 is to 4, that means that there are "5" parts boys and "4" parts girls. So that makes:

5 + 4 = 9 parts in total

Total there are 63 kids, so each part would be:

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So, we basically need 60% of 70

First, we want to convert 60% to decimal. We divide by 100, that's it! So:

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Now to get the number we simply multiply the decimal of 60% we got, which is 0.6 with the total, which is 70. Thus,

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Lily has 30 dress, WHICH ARE 75% of the total outfits she has.

First of all, what is 75% in decimal?

We divide by 100:

75/100 = 0.75

We can now write:

30 is 0.75 times the total

Right?

Which number's 75% (or 0.75) is 30? This is what we need to figure out!

0.75 * which number would give us 30?

We have to simply divide 30 with 0.75 to get total number of outfits:

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Answer:

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