Mathematics High School

What is the approximate area of a circle with the diameter of 20cm in square centimeters (use 3.14 for pie(

Answers

Answer 1

Answer:

314cm

Step-by-step explanation:

the area formular for a circle is a=pi(r)^2. Using this information we can plug in the numbers...

3.14(10)^2. Next square 10 to get 3.14*100. Then you get 314 which is the answer. The reason I used 10 is because the diameter is half of the radius so half of 20 would be 10.

Related Questions

Can someone plz help me with this one problem plzzzzz

(I’M MARKING BRAINLIEST)

Answers

1: 23
2: 46
3:69
6: 138
23s+75=c
S c
1(23)+75=98
2(23)+75=121
3(23)+75=144
6(23)+75=213
Hope this helps

Mason recently bought seven boxes. A week later half of all his boxes were destroyed in a fire. There are now only 22 boxes left. With how many did he start with

Answers

Step-by-step explanation:

if mason had recently bought seven boxes and half of them got destroyed in a fire which is 1/2, and there are now only 22 boxes left soo im

using  based on the info it gave me sorry if its wrong

-Find the final amount of boxes left:

  -If mason had bought in seven boxes recently and after 1/2 if gone and results in 22 that should be in logic 44 since 22×2=44

  -to find the box he started with when he also  bought in 7 boxes we should be 37 and then add 7 to  get 44

The final answer is : 44

Determine the amount of interest owed after 2 years on a $850 loan at a 12.5% interest rate. Write an equation and solve the problem.

Answers

Answer:$212.50

Step-by-step explanation:

=850*.125*2

Answer:

$208.25

Step-by-step explanation:

which equation best matches the graph shown below ?

Answers

Top right. I’m basically doing your homework for u at this point

Find AC. Need help fast.

Answers

Answer:

dc

Step-by-step explanation:

i know its right

One-third is one-ninth of

Answers

Answer:

1/27

Step-by-step explanation:

I believe the answer to your question is 1/27

I hope this helps you!

It’s 2/9 I for sure

6^2 - (3 * -4) + 20
please help meeee

6^2 = six to the second power

Answers

Answer:

6^2 - (3*-4)+20

6^2 - (-12)+20

36+12+20

48+20

68

Let me know if this helps!

Answer:

68

Step-by-step explanation:

120 is 60% of what number?

Answers

Answer:

120 is 60% of 200

Step-by-step explanation:

Step 1 = 120 = 60% × Y

Step 2 = 120 = 60/100 × Y

Step 3 = Y = 120 × 100/60

Step 4 = Y = 120 × 100 ÷ 60

Step 5 = Y = 200

Simplify the following equation. Explain each step and write the property used. 3x+2x-3+10=27

Answers

Answer:

x=4

Step-by-step explanation:

1. Add like terms: 5x+7=27

2. Use the subtraction property on both sides to get rid of 7: 5x=20

3. Divide 5 on both sides to get x by itself: x=4

Factor

x^2-6x-16


pls help i dont get it

Answers

(x - 8)(x + 2) i hope this helpsbhhhhh


Find the value of x.
5
15

Answers

Answer:

[tex]5 \div 15 = 0.3333 \\ \cos(0.3333) = 19.5 [/tex]

What is the image of the point (9,7) after a rotation of 180 counterclockwise about the origin

Answers

you would just negate each value, so it would be (-9,-7). you can also double check on a calculator

The image of the point (9,7) after a rotation of 180 counterclockwise about the origin is at (-9, -7)

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, translation, reflection and dilation.

Rotation of a point A(x, y) 180 counterclockwise about the origin produces an image at A'(-x, -y).

Hence, the image of the point (9,7) after a rotation of 180 counterclockwise about the origin is at (-9, -7)

Find out more at: https://brainly.com/question/16825824

The image below shows a plane slicing a cone.
If the plane does not slice the base, which two-dimensional figures could be the result from slicing a co
a circle or an ellipse
a triangle or a circle
a triangle or a parallelogram
an ellipse or a parallelogram

Answers

A triangle or a parallelogram

Answer: A triangle or a parallelogram

Step-by-step explanation: A triangle and a parallelogram have the same base and the same area. If the sides of the triangle are 26cm,28cm and 30cm and the parallelogram stands on the base 28cm, find the height of the paraollelogram.

30 18 24 4 = 18 make it true

Answers

30-[18-(24\4)] = 18

if you follow pemdas

Step-by-step explanation:

30-18+(24/4)=12+6=18

Hope it helps

Which postulate can be used to prove the two triangles are congruent?

Answers

Answer:

ASA

Step-by-step explanation:

ANGLE SIDE ANGLE IS SUITBLE

What is the minimum y value of the following quadratic function? f(x) = x2 - 6x + 8

Answers

Answer:

14

Step-by-step explanation:

k

=

c

−

b

2

4

a

We know that

a

=

1

,

b

=

−

8

and

c

=

2

, so let's substitute:

k

=

2

−

(

−

8

)

2

4

(

1

)

=

2

−

64

4

=

2

−

16

=

−

14

.

So, we have

min

=

−

14

. Let's check:

graph{(x^2 - 8x + 2 - y)(-14 -y)=0 [-11.82, 20.22, -15.38, 0.64]}

Pls Helpp!!! "Olivier has $48.25 to spend on painting classes. Each class costs $6 plus a one-time registration fee of $6.25. Let the variable n represent the number of classes. How many classes can Olivier purchase? Write an equation and show your work."

Answers

Answer:

48.25 - 6.25 -6n, 7 classes

Step-by-step explanation:

mark brainlest

Answer:

The equation: 6n+6.25 = 48.25

Step-by-step explanation:

i searched up the answer here u go

I need help with geometry

Answers

sin x = 12 / 15
sin x = 0.8
x = sin ^ -1 (0.8) = 53°
Sin X = 12/15 hope this helps you

Please help I’m in trouble end of the quarter is tomorrow

Answers

This is literally what I'm doing in school right now...

Answer: (A) TRUE

13. If ax + bx - 9 =(x - k)(2x+k) and b>0
then k is equal to...
please please help! :))

Answers

Answer:

D or E ...................

A box is to be wrapped in a shiny pink decorative paper. The box is o inches long, 5 inches wide, and 4 Inches high. What is the minimum amount of decorative paper needed to cover the box? ​

Answers

Answer:

20 inches

Step-by-step explanation:

Because the volume of the box is 20.

Correct me if im wrong and please wait for more responses if needed please.

I NEED HELP WITH THIS PLEASEE

Answers

Answer:

add

Step-by-step explanation:

What is the mode(please explain it in the most simple way possible,thank you)

Answers

Answer:

mode is the number in a set of numbers that appears most often.

Answer:

Mode is whatever number appears most in a group of numbers.

Example: 7, 4, 9, 4, 7, 7, 9, 3

The mode of this example would be 7

Step-by-step explanation:

victoria got 34 out of 40 questions correct on a quiz. what percent did she have correct?

Answers

Answer: 85 percent

Step-by-step explanation: convert the fraction into a ratio

I will give you the crown if you answer this. ​

Answers

Answer:

Number 6 is -0.8571

Number 7 is 0.3

Step-by-step explanation:

Answer:

6. is 1.16 or 1.2 rounded

7. is 3.3

A flagpole casts a 16-foot shadow at the same time a 4-foot pole casts a 5-foot shadow. 4 ft . ¿ How tall is the flagpole ​

Answers

Answer:

64

Step-by-step explanation:

16 times 4

What’s the volume of the prism ?

Answers

Answer:

63[tex]cm^{3}[/tex]

Step-by-step explanation:

To find the volume of this prism, all you need to do is multiply the height, the width, and the length of the prism. The height is 3, the length is 7, and the width is 3. So 3·3·7=9·7=63. Now we have to add the label, which is cm. We are multiplying 3cm by 3cm by 7cm, which makes it  [tex]cm^{3}[/tex]. Now you just multiply [tex]cm^{3}[/tex] and 63 together, which gets you 63[tex]cm^{3}[/tex].

it says Andre starts with $100 in his savings account and adds $5 per week Elena starts with $10 in her savings account and adds $20 each week after 4 weeks who has more money in their savings account ​

Answers

Answer:

Andre

Step-by-step explanation:

So for Andre you would do 5*4=20 and 100 + 20 = 120.

And Elena you would do 20*4=80 then 80 + 10 = 90.

Hope this helps!!

can someone help me out ? i'm new to it

Answers

Answer:

the bill depends on the how many people

in one hour. Mrs. Caspero con grade 26 Quizzes. At the same rate how long will it take her to grade 104.​

Answers

Answer:

x =4 hours

Step-by-step explanation:

We can use ratios to solve

26 quizzes        104 quizzes

----------------- = -------------------

1 hour                 x hours

Using cross products

26x = 1 * 104

26x = 104

Divide each side by 26

26x/26 = 104/26

x =4

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