MATHEMATICS
MIDDLE SCHOOL

Answer: Area of larger circle: 3.14 x 5^2 = 78.5

Area of small circle: 3.14 x 2^2 = 12.56

Difference of the 2 areas: 78.5 - 12.56 = 65.94

Probability of being in large circle but not small circle: 65.94 / 78.5 = 0.84 = 84%

The answer is A) 84%

Area of small circle: 3.14 x 2^2 = 12.56

Difference of the 2 areas: 78.5 - 12.56 = 65.94

Probability of being in large circle but not small circle: 65.94 / 78.5 = 0.84 = 84%

The answer is A) 84%

Answer: Short answer: 84% A

Remark

This sounds like there are only 2 circles that matter. The small one is inside the larger and the small one is shaded.

Step One

Find the area of the small circle.

Givens

r = 2

pi = 3.14

Formula

A = pi*r*r = pi r^2

Sub and Solve

A = 3.14 * 2^2

A = 12.56

Step Two

Find the area of the larger circle

A = pi*r^2

pi = 3.14

r = 5

Area = 3.14 * 5^2

Area = 3.14 * 25

Area = 78.5

Step Three

Find the area of the unshaded region between the larger and smaller circles.

Formula

Area unshaded region = Area of the Large Circle - The area small circle

Givens

Area Large Circle = 78.5

Area Small Circle = 12.56

Solve

Area of unshaded region = 78.5 - 12.56 = 65.94

Find the probability of a point being in the unshaded region.

P(unshaded region) = (Area of Unshaded region / Entire Area)*100%

P(unshaded region) = (65.94 / 78.5) *100%

P(unshaded region) = 84%

Answer: A

Remark

This sounds like there are only 2 circles that matter. The small one is inside the larger and the small one is shaded.

Step One

Find the area of the small circle.

Givens

r = 2

pi = 3.14

Formula

A = pi*r*r = pi r^2

Sub and Solve

A = 3.14 * 2^2

A = 12.56

Step Two

Find the area of the larger circle

A = pi*r^2

pi = 3.14

r = 5

Area = 3.14 * 5^2

Area = 3.14 * 25

Area = 78.5

Step Three

Find the area of the unshaded region between the larger and smaller circles.

Formula

Area unshaded region = Area of the Large Circle - The area small circle

Givens

Area Large Circle = 78.5

Area Small Circle = 12.56

Solve

Area of unshaded region = 78.5 - 12.56 = 65.94

Find the probability of a point being in the unshaded region.

P(unshaded region) = (Area of Unshaded region / Entire Area)*100%

P(unshaded region) = (65.94 / 78.5) *100%

P(unshaded region) = 84%

Answer: A

MIDDLE SCHOOL

What is the answer to 7/8 x 1/7

7/8* 1/7

= 1/8 (because 7 and 7 cancel out)

The final answer is 1/8~

= 1/8 (because 7 and 7 cancel out)

The final answer is 1/8~

The answer is 7 over 56 (7/56)

MIDDLE SCHOOL

What is 22 divided by 4722

11/2361 is the answer

HIGH SCHOOL

Graph the following lines and write the equation in slope-intercept form. Through the points (4,2) and (3,1). PLS HELP ME!!!!!!!!!!!!

Answer: y = x - 2

To graph the following equation , use y intercept to determine where the line will cross the y axis, so count the units from the value b (-2) . From that point (b) ,use the slope value m = 1) to find the second point to plot the graph. Join,the two points to draw the line

Solution:

To find the the equation use first find the slope using the equation:

m= y2-y1/x2-x1

m= 1-2/3-4

m= 1

Now use the equation below to find the y intercept (b), use any one pair of the coordinates to find the y intercept

y = mx + b in this case i used (4,2)

2 = (1)(4) + b

-2 = b

So

y = x -2 answer

Answer:

y = x - 2

Step-by-step explanation:

I checked :)

HIGH SCHOOL

How do you spell out "150

One hundred and fifty have a nice day :D

Answer:

one-hundred fifty

Step-by-step explanation: