Can you please help me I I need help

Mathematics

1 answer:

balu736 [363]4 years ago

4 0

First they ask how many statues does he make in a minute. they don't need anything about the # of ball one so just cross that out of your head. if he makes 42 in 168 min divide 168 by 42 to get that.
Now they ask how many balloons are used in one sculpture. since they are identical they all have the same amount. 252 balloons are used to have 42 sculptures. 252÷42 will get the # of balloons in just one.

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Time traveler can take 5 books with him and he has 79 books to choose from how many different ways can the books be selected

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We are given:

The time-traveller has 79 books, but he can only take 5 books

since we need to find the number of ways he can choose 5 books, we know that the order in which he takes the books does NOT matter

Hence, we will use combination

Finding the number of ways:

Since we will use combination, ₇₉C₅

We know that the formula for combination is (n!) / (r!(n-r)!)

₇₉C₅ = 79! / 5!(74!)

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Order the sides of the triangle from shortest to longest.

Genrish500 [490]

Answers:

Shortest Length = LN
Middle Length = LM
Longest Length = MN

========================================

Explanation:

Let's find the missing angle.

For any triangle, the three interior angles always add to 180

L+M+N = 180

75+50+N = 180

N+125 = 180

N = 180-125

N = 55

So we know the three angles of the triangle are

L = 75
M = 50
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We see that M = 50 is the smallest angle, so the smallest side is the segment opposite this angle. The smallest side is LN. The smallest side is always opposite the smallest angle.

Similarly, the largest side is always opposite the largest angle. The largest angle here is L = 75, so the largest side is MN.

The middle side must therefore be LM.

The diagram below shows a visual summary.