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2 years ago

Khan academy!! Pls help will give brainllyest!!!

Mathematics

2 answers:

Anastaziya [24]2 years ago

7 0

Answer:

C and D

Step-by-step explanation:

D. A negative times a positive gives you a negative, so the first 2 fractions will still be negatives after they get out of the parenthesis

C. The 4/7 and -4/7 cancel out

olasank [31]2 years ago

6 0

C and D
Hope it helps! Have a great day!

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Step-by-step explanation:

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A circle with radius 3 has a sector with a central angle of 1/9 pi radians

marissa [1.9K]

Complete question:

A circle with radius 3 has a sector with a central angle of 1/9 pi radians

what is the area of the sector?

Answer:

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Step-by-step explanation:

To find the area of the sector of a circle, let's use the formula:

$A = \frac{1}{2} r^2 \theta$

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3 years ago

Solve for x in the diagram below (picture included)

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Answer:

Step-by-step explanation:

We know the straight line is equal to 180°, and the three angles that make it are (x+12),100°, and x. We can use the equation 180=(x+12)+100+x to find x.

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