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Olin [163]
2 years ago
11

The diameter of a semicircle is 8 millimeters. What is the semicircle's radius?

Mathematics
2 answers:
nirvana33 [79]2 years ago
8 0

Answer:

4 millimeters

Step-by-step explanation:

a radius is half of a diameter

e-lub [12.9K]2 years ago
8 0

Answer:

r = 4mm

Step-by-step explanation:

The radius is 1/2 of the diameter

r = 1/2 d

r =1/2 (8 mm)

r = 4mm

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Which two values of x are the roots of the polynomial below? <br> x^2+5x+11
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Answer:

x = -5/2 + i√19 and x = -5/2 - i√19

Step-by-step explanation:

Next time, please share the possible answer choices.

Here we can actually find the roots, using the quadratic formula or some other approach.

a = 1, b = 5 and c = 11.  Then the discriminant is b^2-4ac, or 5^2-4(1)(11).  Since the discriminant is negative, the roots are complex.  The discriminant value is 25-44, or -19.

Thus, the roots of the given poly are:

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x = -----------------------------------

                     2(1)

or x = -5/2 + i√19 and x = -5/2 - i√19

5 0
3 years ago
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6 0
2 years ago
What is the missing constant term in the perfect square that starts x^2+10x?
max2010maxim [7]
<span>x^2+10x + 25 = (x + 5)^2

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4 0
3 years ago
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1. What is the value of x? Show all of your work.
asambeis [7]
AB^2 + BC^2 = AC^2
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Now subtract 117 from both sides
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3 0
3 years ago
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