The point A and B lie on the circumference of a circle with centre O. the area of the circle is 81πcm². The length of the major arc is 15πcm.

Calculate:

a) The radius of the circle
b) The length of the minor arc, giving your answer in the form lπcm².
c) The acute angle​

Answers

Answer 1

Answer:

a)9cm

b)

[tex]3\pi[/tex]

c)60°


Related Questions

Lol can you help if you can

Answers

Answer:

y= (x - 12)^3

y= (x - 4)^3

Step-by-step explanation:

Shift to the right is a horizontal shift so it needs to be with x in the parenthesis. And negative because it is to the right.

y= (x - 12)^3

y= (x - 4)^3

are the two that fit those criteria

Answer:

y = (x - 12)^3

y = (x - 4)^3

Step-by-step explanation:

If you look in the picture, red line is y = x^3 (the original parent equation), green line is y = (x - 4)^3, and blue line is y = (x - 12)^3

Riley purchased 6 pints of ice cream for a party. If each guest will be served exactly
3/8 pint of ice cream, how many guests can Riley serve?

Answers

Answer:

16

Step-by-step explanation:

divide 6 by 3/8 by multiplying 6/1 by 8/3

A person whose eyes are 5 feet above the ground is standing on the runway of an airport 100 feet from the control tower. That person spots one of the air traffic controller at the window of the 132 foot tall tower. What is the angle of elevation to the nearest tenth of a degree?

Answers

Answer:

132-5 therefore the height from the eyes to the window is 127

100 feet away from the base of the tower  

This forms two legs of a triangle

trying to find the degrees of this triangle.

Since its the two legs, you can use tanx which = to opposite side/adjacent side

Therefore, it is tanx = 127/100

But you are looking for x so arctan(1.27)

Must use calculator to find x.

Use the distributive property to write an expression that is equivalent to 8(a + 4).
?

Answers

the answer to this expression is 8a+32

1. There are 7 ushers and 11 technicians helping at the Harper Middle School fall play. PART A: What is the ratio of ushers to technicians? ____________________ PART B: What is the ratio of technicians to all helpers? ____________________

Answers

A is the ratio of 7 to 11 and B is the ratio of 11 to 18

5 plus square root of 45 divided by 4​

Answers

5+ sqrt45/4

5+5/4

6.75

5 + square root of 45 divided by 4
= 5 + 6.7 divide by 4
= 5 + 1.675
= 5.675

y’all pls help. i’ll mark you brainliest!!!

Answers

Answer:

help me first,

Step-by-step explanation:

PLZ HURRY WILL MARK BRAINLIEST IF RIGHT

Answers

I think the answer is C.

Good luck!

Calculate the percentage of your daily intake for Total Fat, Saturated Fat, Protein, Fiber, and Carbohydrates based on a 2000 calorie/day diet.

Answers

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

if the radius of the circle becomes two times what will be the new area of the circle​

Answers

Answer: So when you double the radius, the area goes up by 4 times because 2 squared is 4. The area will always go up by the square of how much the radius goes up. By contrast, the circumference will only double -- from 12.56 to 25.12 because you do not square the radius (or diameter) -- you just multiply it by pi.

Step-by-step explanation:

Hsisocoosmfiks Gm and no I need

3. Describe how you would find the unknown amount in the story.

Answers

Answer:

Identify all equations or possible expressions to solve for and evaluate. Find clues, use context clues and try to find out/identify other problems then solve for it bit by bit put them together to solve for.

(also there is no story)

Can someone explain please? Answer + explanation :(

Answers

Answer:

I don't understand this please explain what I am looking at

Step-by-step explanation:

Pls help me with this question

Answers

Answer:

1.5 pound

dfcefx sec e ggv

A researcher is comparing the effectiveness of three devices designed to help people who snore. There are 120 people who snore participating in the experiment. Using a table of random digits, the researcher will randomly place the participants into three equally sized treatment groups suitable for comparison.

Which design is the most appropriate for this experiment?

A Randomly number each person with 1, 2, or 3. Assign the people labeled 1 to the device 1 group, the people labeled 2 to the device 2 group, and the people labeled 3 to the device 3 group.
B Number each participant from 1 to 120. Reading numbers from left to right from a random number table, identify 80 unique numbers from 1 to 120. Assign the people whose labels are the first 40 numbers to the device 1 group. Assign the people whose labels are the second 40 numbers to the device 2 group. Assign the remaining people to the device 3 group.
C Number each participant from 000 to 119. Reading numbers from left to right on a random number table and looking at three digits at a time, identify 80 unique three-digit numbers from 000 to 119. Assign the people whose labels are the first 40 numbers to the device 1 group. Assign the people whose labels are the second 40 numbers to the device 2 group. Assign the remaining people to the device 3 group.
D Select a participant, and identify the first digit reading numbers from left to right on a random number table. If the first digit is a 1, 2, or 3, assign the participant to the device 1 group. If the first digit is a 4, 5, or 6, assign the participant to the device 2 group. If the first digit is a 7, 8, or 9, assign the participant to the device 3 group. If the first digit is a 0, skip that digit and move to the next one to assign the participant to a group. Repeat this process for each participant.

Answers

Answer:

A

Step-by-step explanation:

A is the less complicated one and the simplest but also the most efficient and the one that makes the most sense.

Answer:

C

Step-by-step explanation:

edge 2021

Triangle ABC is reflected across line m to form triangle PRS.

B

R

A

s

Which statement must be true?

O The length of AB = the length of SR.

O The length of BC = the length of RP.

0 m 4 = m/s

OmZB =mZR

Answers

Answer: D

Step-by-step explanation:

PLS HELP! 18 points , and BRAINLIEST !!

Explain the difference between finding the volume of this right rectangular prism with whole unit cubes and with 1/2 -unit cubes.

Answers

Answer:

Step-by-step explanation:

So if you count the length, and width then times them then you will get the right answer.

Answer:

Step-by-step explanation: i think you multiply 1/2 4 times and then the other 4 by 3 and then the answer from the 1/2 by 4 to get the answer

Hope this helps

what expression is equivalent to (2x^2+4x-7)(x-3)

Answers

Answer:

PointFarmerv2.exe

Step-by-step explanation:

Answer:

2x^3-2x^2-19x+21

Step-by-step explanation:

Identify all pairs of parallel segments pls help on number one

Answers

Answer:

A C and D F

B D and E A

FB and E C

Step-by-step explanation:

Given:

See attachment

Required

List all parallel segments

From the attachment:

A B = B C

A F = F E

C D = D E

This implies that triangle [tex]BDF[/tex] divide the side lengths of triangle [tex]ACE[/tex]into equal parts

So, the parallel segments are:

A C and D F

B D and E A

FB and E C

Please help me I want to finish my math Homework!!

Answers

Answer: X<-10/7

Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable


What is the value of (1/2)^3 + (1/3 x 2)?

Answers

Answer:

1/3x^2+1/8

Step-by-step explanation:

simplify the equation to 1/8+1/3x^2

if a person runs 1.5 miles in 8 mins how far can they run in 2 hours

Answers

22.5 miles in 2 hours.....
First find out how many times 8 minutes fits into two hours. Since one hour is 60 minutes, 2 would be 120. Perform 120/8 and get 15. This means that 8 minutes fits 15 times into 2 hours. Then, you’re going to multiply 1.5 x 15 and get the answer, 22.5. The person can tune 22.5 miles in 2 hours

There are 666 people in Eden's family. Each person drinks 5/2 liter of milk each week.

Answers

Answer:

2 and 2/5 gallons of milk.

Apply the distributive property. Then simplify by combining like terms. How do you do that? 14(-7w-4)

Answers

Answer:

-98w-56

Step-by-step explanation:

Distributive property means to take the 14 and distribute and multiply by everything inside the parenthesis,

so 14(-7w) -4(14) = -98w-56

Since there are not 'like terms' you are done

A line that is not parallel nor perpendicular to y=2/4x+1

Answers

Answer:

y=2x+1

Step-by-step explanation:

Parallel = gradients are the same

Example: y=2/4x+5

Perpendicular = gradients are the inverse of each other

Example: y= -4/2x+1

Any equation would be correct unless the gradient is 2/4 or -4/2

HELP PLEASE!!! ILL MARK BRAINLIEST FOR WHOEVER ANSWERS FIRST!!!!! MATH QUESTIONS!!!! ONLY GOING FOR 35 MINUTES!!!!!

Fill in the blanks to describe how to find solutions to systems of equations by graphing.
The solution to a system of equations is the _________________________ where the two lines
_______________.
If the two lines in the system have different slopes, there will be _______________ solution(s).
If the two lines in the system have the same slope and different y-intercepts, there will be
_______________ solution(s).
If the two lines in the system have the same slope and the same y-intercept, there will be
_______________ solution(s).

Answers

Step-by-step explanation:

2nd is same solution

3rd is different solution

4th is same solution

(how I did this is by simply mathematics )

+ - = -

+ += +

Mr mcClary writes the equation 3(3x-10)=5(x+10)

Answers

3(3x-10)=5(x+10)
9x-30=5x+50
+30 +30
9x = 5x+80
-5x -5x
4x=80
/4 /4
x=20

10 in.
9 in.
11 in.
help please!!!

Answers

[tex] \pink{\boxed{\rm Answer + Explain}} [/tex]

.

Area of parallelogram

[tex] \rm L = base \times hight [/tex]

[tex] \rm L = 11 \times 9 [/tex]

[tex] \blue{\boxed{\rm L = 99 {in}^{2}}} [/tex]

.

around of parallelogram

[tex] \rm = (2 \times base) + (2 \times side) [/tex]

[tex] \rm = (2 \times 11) + (2 \times 10) [/tex]

[tex] \rm = 22 + 20 [/tex]

[tex] \blue{\boxed{ \rm = 42 in }} [/tex]

what’s the range of this function graph?

Answers

Answer:

i think its D

Step-by-step explanation:

you see how the line starts in positive 2 and it goes infinite up positive, well answer may be (2,infinite)

plzz help me this is due today!!​

Answers

Answer:

I may be wrong, but the answer I got is 205°

In the figure at the right, what is m∠2 if m∠4 = 120°


pls hurry im on a timer

Answers

Answer:

120

Step-by-step explanation:

they are on opposite sides and the angles are equal

Answer:

Step-by-step explanation:

They are opposite each other so they are equal.

m4=m2=120 degrees

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