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DaniilM [7]
3 years ago
12

Question 1 of 5

Mathematics
1 answer:
dedylja [7]3 years ago
5 0

Formula for the circumference of a circle:

C = πd    or     C = 2πr      

[C = circumference    π(pi)       d = diameter        r = radius(half the diameter)]

You know:

d = 5 feet        

and you're using 3.14 for π, so substitute/plug it into the equation

C = πd

C = (3.14)(5)

C = 15.7 feet       Your answer is B

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Answer:

2x + 3 - 4/x

Step-by-step explanation:

6x^2 + 9x - 12/ 3x

1. Reduce the expression by cancelling the common factors.

2x^2 + 3x - 4/ x

2. Divide each term in the numerator by the denominator.

2x^2/x  +  3x/x  -  4/x

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3 years ago
Rewrite the expression<br> 610 x64<br> 6-5x6²<br> as a single term of the form 6",
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6^-9

Step-by-step explanation:

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5 0
3 years ago
A triangular plaque has side lengths of 8 inches, 13 inches, and 15 inches.
lianna [129]
<h3>Answer:  A) 52 square inches</h3>

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

Explanation:

a = 8, b = 13, and c = 15 are the sides of the triangle

s = (a+b+c)/2 = (8+13+15)/2 = 18 is the semi-perimeter, aka half the perimeter.

Those values are then plugged into Heron's Formula below

A = \sqrt{s*(s-a)*(s-b)*(s-c)}\\\\A = \sqrt{18*(18-8)*(18-13)*(18-15)}\\\\A = \sqrt{18*(10)*(5)*(3)}\\\\A = \sqrt{2700}\\\\A = \sqrt{900*3}\\\\A = \sqrt{900}*\sqrt{3}\\\\A = 30\sqrt{3}\\\\A \approx 51.9615\\\\A \approx 52\\\\

The triangular plaque has an area of approximately 52 square inches.

6 0
2 years ago
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