Mathematics High School

I need help, please and thank you. I know that you have to multiply the diameter by 2 to find the radius, but with the 9 pi, it makes me unsure if I'm doing this correctly. ​

I Need Help, Please And Thank You. I Know That You Have To Multiply The Diameter By 2 To Find The Radius,

Answers

Answer 1

Answer:

r=6

Step-by-step explanation:

The area of a circle is given by πr². Note that this uses the radius, not the diameter.

Now, one quarter of this area (ABC) is given to be 9π.

So apparently:

[tex]\frac14 \pi r^2 = 9\pi[/tex]

If you solve this:

[tex]\frac14 r^2 = 9[/tex] (divide both sides by π)

[tex]r^2 = 9\cdot4[/tex] (multiply both sides by 4)

so

r = √36 = 6

so the radius is 6.

Related Questions

ALGEBRAIC model that represents the following situation: "A local fair charges an entrance fee of $5, and costs $1.25 per ride.

Answers

Answer:

y = 1.25x + 5

Step-by-step explanation:

The entrance fee is fixed, meaning it does not change. It is $5 for any person that wants to enter.

y = mx + b

only rates that change is dependent on how many rides you go on.

so 1.25 is your slope, m

y = the amount you will spend

x = the amount of rides you go on

b = the cost to enter the fair -- this is fixed.

put the equation together

2(x+10) i don’t understand it lol help ASAP

Answers

Answer:

Full Question please

2x + 20

whats the answer? help lol​

Answers

The final and final answer is 80

Five less than the product of a number and -8 is -77

Answers

Answer:

9

Step-by-step explanation:

-77+5=-72

-72 divided by -8 = 9

Help me with this question please

Answers

Answer:

the answer would be 96!

My work :

ok so -6 (9-4) is -30

then i did 11 to the power of 2 which is 121

Next! 121- 30 = 91

Lastly i did 91 + 5 which was 96!

so in conclusion the answer would be 96!

what is 0.371 as a decimal

Answers

Answer:

It is in a decimal.

In a fraction it’s 371/1000

In a percentage 37.1%

9514 1404 393

Answer:

  0.371

Step-by-step explanation:

A decimal number is a string of digits in the range 0-9, with an optional single decimal point (period) somewhere in the string. Usually, leading zeros are not shown, except one leading zero ahead of a decimal point to help reduce errors in transcription.

The number you show, 0.371, is a decimal number.

Lucy has to run two errands. She starts from home and travels 3 miles south to the post office. From the post office, she travels 4 miles east to the gas station. Then, from the gas station, she travels 5 miles to return home. The entire trip forms a triangle. What was the smallest angle made in her trip?

Answers

Answer:

Smallest angle = [tex]36.87^\circ[/tex]

Step-by-step explanation:

Given that:

Let the home be at the point A.

Lucy travels 3 miles south to reach point B.

Then 4 miles to east to reach point C and then

returns to home traveling 5 miles making it a triangle for the whole journey.

This travel is nothing but forms a right angled [tex]\triangle ABC[/tex], right angled at point B.

To find:

Smallest angle in the travel.

Solution:

In a triangle, the smallest angle is the angle opposite to the smallest side.

Therefore, the [tex]\angle C[/tex] will be the smallest.

We can use tangent trigonometric ratio here:

[tex]tan\theta = \dfrac{Perpendicular}{Base}[/tex]

[tex]tan C = \dfrac{AB}{BC}\\\Rightarrow tan C = \dfrac{3}{4}\\\Rightarrow \angle C=tan^{-1}{0.75}\\\Rightarrow \angle C=36.87^\circ[/tex]

Therefore, the answer is:

Smallest angle = [tex]36.87^\circ[/tex]

Use: 0, 4, 6, 11, 9, 8, 9, 1, 5, 9, 7 to construct a line plot. Describe the line plot to the best of your ability in the box below.

Answers

make a graph 0-15 u would have 1 zero 1 one 1 four 1 five 1 six 1 seven 1 eight 3 nines 1 eleven

Step-by-step explanation:

Which car is not traveling at a constant speed? Explain your reasoning.

Answers

Answer:

cart 3

Step-by-step explanation:

65/1 is not equal to 85/2

Answer:

car 3

Step-by-step explanation:

the other cars like car are equally divided to equal the other results so like car 1 is traveling in 60 miles every 2 hrs and car 2 is 200 miles every 5 hours

Find the two number who sum is 13 and whose product is 40​

Answers

8 and 5, 5 plus 8 is equal to 13 and 5 times 8 equals 40

Answer:

A = 8 and B = 5

Brainly pls

Step-by-step explanation:

Which statements are true about triangle ABC and its translated image, A'B'C'? Select two options.
> The rule for the translation can be written as T–5, 3(x, y).
>The rule for the translation can be written as T3, –5(x, y).
>The rule for the translation can be written as
(x, y) → (x + 3, y – 3).
>The rule for the translation can be written as
(x, y) → (x – 3, y – 3).
>Triangle ABC has been translated 3 units to the right and 5 units down.

Answers

Answer:

Option (2) and Option (5)

Step-by-step explanation:

Blue triangle ABC has been translated to form the image triangle A'B'C' (in red).

Let take a point A of ΔABC,

Coordinates of point A → (-1, 3)

Coordinates of point A' → (2, -2)

Rule for the translation will be,

A(-1, 3) → A'(2, -2)

A(-1, 3) → A'(-1 + 3, 3 - 5)

A(x, y) → A'(x + 3, y - 5)

[tex]T_{3, -5}(x, y)[/tex]

ΔABC has been translated 3 units to the right and 5 units down.

Therefore, Option (2) and Option (5) will be the correct options.

Answer:

B and E

Step-by-step explanation:

Properties of isosceles triangle

Answers

Answer:

Had two congruent sides

Has congruent base angles

A trapezoid has verities A(-5, 4), B(-3, 2) C(-7, -2) and D(-7, 2). It is transformed according to the rule

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Not enough info to answer the question it should have 2 trapezoids to compare if your talking about transformations

The interest on an investment varies directly as the rate of interest. If the interest is $43 when the interest rate is 4%, find the interest when the rate is 8%.

Answers

9514 1404 393

Answer:

  $86

Step-by-step explanation:

Since the interest varies directly, doubling the rate will double the interest.

The interest is $86 when the rate is 8%.

a) 2(x + 10)

What’s the answer

Answers

Answer: 2x + 20

indeed

Answer:

the solution to 2(x + 10) is 2 + 20

May I have brainliest please? :)

8 women and 12 girls can paint a large mural in ten hours. 6 women and 8 girls paint it in 14 hours. Find the time it takes 1 woman to paint it alone

Answers

Answer:

280 hours

Step-by-step explanation:

A race car driver is doing a time trial of a new car on a straight track. The car's distance from the timekeeper is represented by y=293x+50, where x is time in seconds and y is distance in feet from the timekeeper's position. How many feet from the timekeeper is the race car at the beginning? It is ft from the timekeeper.

Answers

Answer:

The distance at which the timekeeper is the race car at the start is 50 feet.

Step-by-step explanation:

You know that the car's distance from the timekeeper is represented by

y=293*x +50

where x is time in seconds and y is distance in feet from the timekeeper's position.

You want to determine how far the timekeeper is from the race car at the start. That is, the distance the timekeeper is from the car when the time is equal to zero.  This indicates that x = 0. Replacing x by that value in the expression of the distance of the car from the timekeeper as a function of time and solving:

y=293*0 +50

you get:

y=50

The distance at which the timekeeper is the race car at the start is 50 feet.

The distance from the timekeeper to the race car at the beginning is 50 feet.

Let the time be x.Let the distance be y.

Given the following data:

[tex]y=293x+50[/tex]Time = 0 seconds (at the beginning).

To calculate how many feet (distance) from the timekeeper is the race car at the beginning:

You should note that, the time of the race at the beginning would be equal to zero (0) seconds.

Hence, the start time is equal to zero (0) seconds.

Substituting the value of x into the eqn, we have:

[tex]y=293(0)+50\\\\y=50[/tex]

Distance = 50 feet.

Read more: https://brainly.com/question/14703849

Identify whether each set of ordered pairs is a function or is not a function.

Answers

Answer:

Step-by-step explanation:

To be a function, the x or first number of the pairs can not duplicate. It needs to pass the vertical line test.

A. not a function

B. function

C. function

D. not a function

E. not a function

Convert 45°C to Fahrenheit.
_____ °F

Answers

Answer: T^f= 113

Step-by-step explanation: convert to fahrenheit

What is 38 percent of 22

(In percentage) :)

Answers

Answer:

6.6%

Step-by-step explanation:

30% of 22 is 6.6%

Feel free to give brainliest.

Have an awesome day!

Answer:

I think it is 172.73

Step-by-step explanation:

I am so sorry if i am wrong

2x - x + 7 = x + 3 + 4

Answers

I believe the answer is 7=7

PLS HALP ME!!!!!! You have $6.50 to make copies. Each copy costs $0.45. Write and solve an inequality that represents the number of copies you can make.

Answers

Step-by-step explanation:

Variable x = number of copies

6.50 <= 0.45x

Divide both sides by 0.45

6.50 ÷ 0.45 <= 0.45x ÷ 0.45

14.4444.... <= x

No more than 14 copies

6.50 <= 0.45x

6.50 <= 0.45(14.444)

the slope of the line whose equation is x+y=6​

Answers

It would be or come up as -1

If the measure of angle 3 is equal to (2x + 6)° and x = 7, which statements are true? Check all that apply.


3 lines intersect to form 6 angles. From top left, clockwise, the angles are 1 (90 degrees), 2, 3, 4, 5, 6.

The measure of angle 6 is 20°.

The measure of angle 5 is 70°.

The measure of angle 2 is 80°.

Angles 2 and 5 are complementary.

Angles 5 and 6 are supplementary.

Angles 1 and 4 are supplementary.

Answers

Answer:

The answers are

A. The measure of angle 6 is 20"

B. The measure of angle 5 is 70"

F. Angles 1 and 4 are supplementary

Hope this Helps!

Answer:

1,2,6

Step-by-step explanation:

ON EDGE.2020

Pls help will give brainlest answer

Answers

Answer:

220

Step-by-step explanation:

because i divided 1,760 by 8 i needed to find how many penguin dives in 2 minutes Hope this Helps!

PLEASE HELP 20 PTS i need it quick!

Answers

Answer:

B. 6 + 0.2x

Step-by-step explanation:

One fifth = 1/5 = 0.2One fifth of x = 0.2xSum of 6 and one fifth of x = 6 + 0.2x

I hope this helps!

Answer:

I think it is C

Step-by-step explanation:

if I am wrong I am soooo sorry

PLEASE HELP ASAP ILL MARK BRAINLEST MAKE SURE ITS THE RIGHT ANSWER

Answers

Answer:

D. 4

Step-by-step explanation:

60/15= 4

15 * 4 =60

Answer:

x = 0.4

Step-by-step explanation:

15x = 6 (divide both sides by 15 to get x)

15x/15 = 6/15

A package of 4 pairs of insulated gloves costs ​$25.96 What is the unit price of the pairs of gloves​?

Answers

Answer:

Step-by-step explanation:

25.96/4 = 6.49

Answer:

$6.49 per pair of gloves

Step-by-step explanation:

$25.96 / 4 pairs of gloves = $6.49 per pair of gloves

Mr. Turner bought 12 pounds of carrots to make some cakes. The recipe calls for 3/4 pound of carrots for each cake. How many cakes can Mr. Turner make?

Answers

The answer is 16 cakes

3/4= .75
.75/1=12/x
x=16

Hope this helps :)

6 ( − 2.1 x − 2 ) + ( 7 x + 5 )

Answers

Answer: −5.6x −7

Step-by-step explanation:

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