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2 years ago

Assume the radius of a circle is

Mathematics

1 answer:

Lisa [10]2 years ago

7 0

Answer:

Step-by-step explanation:

They want you to see how radius is important. Just remember that one radian is one radius, that should help you see why radius is important.

They ask for the unit circle , that is a circle of one unit for the radius, which makes it super easy to calculate things for it, they ask what is the area, which is that famous formula, π $r^{2}$ , then they ask what's its circumference. which is that other famous formula 2πr

so to go all the way around a circle of one unit radius, it's 2π exactly or about 6.28..... units, call it meters, or feet or inches, it doesn't mater here.

the size of the circle doesn't matter here either, b/c we are using the radius , that relaationship doesn't change , all circles, what ever size , have this same relationship between the radius and radians. :P this is handy.

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Y =9x+13 y =2x+48 Can you find the x and the y

Digiron [165]

9x+13=2x+48
-2x -2x
7x+13=48
-13 -13
7x=35
/7 /7
x=5

y=9(5)+13
y=45+13
y=58

4 0

2 years ago

In ten-pin bowling, the highest possible score in a single game is 300.

Natali [406]

Answer:

a) Is it possible for Fred to accomplish this? Yes

b) If it is possible, what score does he need in his next game? 293

Step-by-step explanation:

Step 1

Let us represent the number of games Fred bowled to get an average of 177 = X

His total points scored in that game would be

177 × X

= 177X

To achieve an average of 178 for his next game,

The total number of points he scored was 199, hence that is represented as:

178 = 177X + 199/ X + 1

178(X + 1) = 177X + 199

178X + 178 = 177X + 199

178X - 177X = 199 - 178

X = 21

Hence, Fred bowled 21 games to achieve an average of 178

Therefore, the score he needs to have on the 23rd game is obtained as:

= (23 × 183) - (22 × 178) = 4209 - 3916 = 293

Therefore, it is possible for Fred to raise his average from 178 to 183 in a single game, but he must bowl 293 in his next game to do this.

5 0

3 years ago

I really need help!! what number is equivalent to the fraction? 5 9

dangina [55]

Answer:

0.55555555555555555555555555556

(The 5 is repeating, so I rounded the last digit to 6.)

Step-by-step explanation:

Divide 5/9. You get 0.5555... and the 5 is repeating.

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2 years ago

The lowest temperature ever recorded in the U.S. was - 79.8 degrees Fahrenheit in Prospect Creek, Alaska. Which of the following

BabaBlast [244]

Answer:

Step-by-step explanation:

Negative numbers are less than zero.

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2 years ago

A school uniform for boys consists of black or gray slacks, a short-sleeve or long-sleeve white button-down shirt, and a red, bl

sdas [7]

If I am right the answer would be 6

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2 years ago