Semicircle arc AB,AC,BD and CD divide the circle above in to regions. The points shown along the diameter AD divided in to 6 equal parts. If AD=6 what is the total area of the shaded region?

Answers

Answer 1

Answer: Area semicircle = π * $r^(2) / 2;$

the total area of the shaded region = 2 * [ π* ( $BD / 2)^(2)$ / 2 - π* ( $CD / 2)^(2)$ / 2 ] = 4π - 1π = 3π.

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Is 4.50 an irrational or rational number?

Answers

it is irrational because rational numbers are whole and irrational numbers are decimals,fractions,negatives,and mixed numbers also irrational numbers go on and on forever rational stops for example 3 is rational and 9.6 is irrational 4.50 is irrational hope this helps you i hope i am the brainliest answer because i need it for the next rank

If a scale is 1:250,000 and the distance is 8.5cm on the map what's the actual distance

Answers

8.5cm · 250,000 = 2,125,000cm

1m = 100cm therefore 1cm = 0.01m

2,125,000cm = 2,125,000 · 0.01 = 21,250m

1km = 1,000m therefore 1m = 0.001km

21,250m = 21,250 · 0.001km = 21.25km

Answer: 21,250m = 21,25km

Find the solution of this system of two linear equations using substitution 11x+3y=103 and y =3x+1

Answers

11x+3y=103 and y=3x+1.

11x+3(3x+1)=103 -----> plug in (3x+1) for y in the first equation. You will want to distribute the 3 to the 3x+1 to get something that looks like:

11x+9x+3=103 ------> now you want to combine like terms

20x+3=103 ---> subtract 3 from both sides
20x=100 ----> divide both sides by 20
x=5

y=3(5)+1 ---> I like to plug in this to the equation that already has y isolated. 3*5 is 15, add 1 and you find that y=16.

(5, 16) will be your final answer (:

A rectangular horse stall has a width of 12 feet and a perimeter of 52 feet. What is the length of the horse stall?A) 13 feet
B) 14 feet
C) 28 feet
D) 40 feet

Answers

Hi there. We know that the formula is P=2(l+w). So, let's solve for x :), l=P/2-w=52/2-12=14 ft. So, your answer would be B) 14 feet.

I think the answer is D

Complete the comparison: 3 + 7 > ? A. 7 + 3 B. 10 − 2 C. 9 + 4 D. 8 + 2

Answers

According to the information the complete comparison would be: 3 + 7 > 7 + 3

What is the complete comparison?

The comparison "3 + 7 > 7 + 3" is true. Both sides of the inequality are equal to 10, but the left side of the inequality is "3 + 7" and the right side is "7 + 3".

According to the above, we can conclude that since addition is commutative, the order of the numbers doesn't matter, and both sides are equal. Therefore, the comparison is true and complete.

So, we can conclude that the correct and complete comparison would be: