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Flauer [41]
3 years ago
9

The perimeter of an equilateral triangle is 63 in.

Mathematics
2 answers:
hoa [83]3 years ago
6 0

Answer:

Step-by-step explanation:just do 4x+3

Mashcka [7]3 years ago
4 0

Because it is an equilateral triangle, all three sides are the same length.  Because of this, you need to divide 63/3 to find out the length of one side.  63/3=21.  So this tells us that 4x+3=21.  Now that we have the equation, we need to solve for x. To do this, subtract the 3 on both sides to get 4x alone.  21-3=18.  So now we know that 4x=18.  Now divide 4 on each side to get x alone.  X= 18/4, which simplifies to 9/2.  In decimal form, x=4.5.

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16. A proportional relationship between the number of pounds of tomatoes (x) and the price in dollars (y) is graphed, and the or
kondaur [170]

The relationship being proportional means there is a value of k such that

... y = k·x

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2 years ago
A marketing research company desires to know the mean consumption of milk per week among people over age 30. They believe that t
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Answer:

651 is the minimum number of people over age 30 they must include in their sample.        

Step-by-step explanation:

We are given the following information:

Confidence level = 90%

Significance level = 10%

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