Mathematics High School

A circle has a radius 30 cm. What is the area? Show your
work.

Answers

Answer 1

Answer:

I believe the area = 2,826

Step-by-step explanation:

A=pie×radius²

A= 3.14×30²

A=3.14×900

A=2,826

Related Questions

How many zeros does the function have?
f(x) = x^3 – 5x^2 – 8x + 48

Answers

Answer:

x^(3)+5x^(2)-8x-48=0

mx = pn , for x
Someone pleaseeeee help

Answers

Answer:

x=pn/m

Step-by-step explanation:

Divide both sides by m to isolate x from the other variables.

mx/m = pn/m

cancel out the m where possible.

x = pn/m

plz help :(
1.Your brother and some of his friends, all under 12 years old, went to the movies. They paid $60 for their tickets. What equation could describe the situation?

2.Another family went to the movies. They bought some child tickets and some adult tickets and spent $96 altogether.
What equation could describe the situation?
How would the equation change if a child’s ticket cost $10?
How would the original equation change if the total price spent on the tickets were $156?

Answers

Answer:

1. 60=12y

60=5*12    y=5

2. a) 96=16x+12y

b) the 12y would be changed to 10y so, 96=16x+10y  

c)  156=16x+12y the number of tickets will change if the total price goes up

Step-by-step explanation:

x= adult tickets

y=child tickets

im not sure but i think is bAnswer:

Step-by-step explanation:

b

b

b

b

bbb

b

b

b

b

b

b

b

b

b

b

b

b

b

b

b

b

b

b

b

I need help on this quesion. (Easy)

Answers

Answer:

the answer is C

Step-by-step explanation:

just divide 42.75 by 9

send the answer from 18 to 23 with process in copy​

Answers

19. Perimeter of rectangle = 2(l + b)

l = 25m

b = 16m

Perimeter of rectangular park = 2 (25 + 16)

= 50 + 32

= 82m

Perimeter of square park = 82m

(given that, perimeter of rectangular and square park are equal)

Perimeter of square = 4a

4a = 82

a = 82/4

a = 20.5m

Area of square park = a²

= 20.5²

= 420.25m²

20. Perimeter of regular hexagon = 6a

a = 2.5

6a = 6 × 2.5

= 15cm

21. Perimeter of regular decagon = 10a

a = 8

10a = 10 × 8

= 80cm

Una persona ahora en el banco 1000 pesos, el cual le ofrece un interés fijo de 3%. La función que relaciona el dinero ahorrado que recibirá después de x meses de ahorro

Answers

Answer:

Interes= [Principal*(1+tasa de interes)^x] - Principal

Step-by-step explanation:

Dada la siguiente información:

Principal= $1,000

Tasa de interes= 3% anual = (0.03/12)= 0.0025 mensual

Número de periodos= x

Para calcular el interés ganado, hay que usa la formula siguiente:

Interes= [Principal*(1+tasa de interes)^x] - Principal

Por ejemplo, para 6 meses:

Interes= [1,000*(1.0025^6)] - 1,000

Interes= $15.09

Please help with the question below. I will give brainiest.

Answers

Answer:

a. y= -1221x+19820

b. For every year the car value decreases $1,221.

c. $11,273

Step-by-step explanation:

a. (y2-y1)/ (x2-x1)

(16157-17378)/(3-2)= -1221

For the y-intercept you would just add 1221 twice to the value of the 2 year old car, get the value of 0 years.

c. -1221(7) +19820 =$11,273

What is an equation of the line that passes through the points (4,1) and (8, -3)?
O A. y = x - 3
O C. y = -x + 3
B. y = x - 11
OD. y = -x + 5

Answers

Option D.
Find slope first, then b for y intercept

The average of your 3 quiz grades is 17 points. Two of your quiz grades are 14 points and 19 points. Write and solve an equation to find the score of your third quiz.

Answers

Answer:

The equation would be 14+19+x=51, and the 3rd quiz score would be 18.  

Step-by-step explanation:

To get to the average, you have to add all the quiz scores and divide by the number of quizzes. If you work backwards, you can multiply the average by the number of quiz scores, which is 51. Then you subtract the known test scores, and you get your answer.

Albie's total income is $695.25 in a week
where his sales are $2870. If he earns a
commission of 7.5% of his sales, what is
his retainer? can you tell me how to work it out aswell please​

Answers

Answer:

Step-by-step explanation:

7.5/100= .075

$580000 x .075 = $43,500 commission

Helpppppp plzzz nowwww

Answers

5.7 i believe is the answer

Answer: side AB is 5.7 units

Step-by-step explanation:

If you look at the congruence marks on the angles, you can see that side AB and side KL correspond. Since we know KL is 5.7, AB must be 5.7 as well. :)

20 POINTS! What is the ANSWER?

Answers

Answer: The first one

Step-by-step explanation:

Answer:

Sin(33°) = x\14

Step-by-step explanation:

coz sin = p\h

What is the value of a?

Answers

I think the answer is 23

Divide. Simplify so the quotient is in lowest terms.
1: 1/2 divided by 4
2: 1 3/4 divided by 1/8
please help me lol

Answers

1. 1/2 divided by 4 = 1/8 or 8.

2. 1 3/4 divided by 1/8 = 7/32.

ite a number of your choice, using the followi a two digit number greater than 40 divisible by both 2 and 3​

Answers

Answer:

60

Step-by-step explanation:

60 ÷ 2 = 30

60 ÷ 3 = 20

Have a nice day :)

A dog walker earns $10 plus $3 per dog. What equation represents this model?

Answers

10+3x Or 3x+10.
This is because he gets 10 dollars add it to the 3 he gets per dog. The per dog is X as you don’t know how many dogs he gets

-28+4x=4(x-7) how many solutions marking brainlest

Answers

Answer:

x^2 + 5 x + =0

Step-by-step explanation:

We need to factor this trinomial by grouping.

The first step in this process consists of splitting the middle term into two terms.

In our example, 5x  has been split into 2x and .

Notice that one common factor can be factored from the first 2 terms, and another from the second 2 terms

Write the sentence as an inequality.
One-half of a number y is more than 22.
The inequality is

Answers

Answer:

1/2y > 22

Step-by-step explanation:

This can also be written as

y/2 > 22

and

0.5y >22

Hope this helps!

HELP ILL GIVE BRAINLIEST

Answers

A would be the correct answer.

Answer:

[tex]7.09*10^{8}[/tex]

Step-by-step explanation:

In scientific notation, a number less than 10 (in this case 7.09) is the base, and it is multiplied by 10 with an exponent (in this case 8).

The equation for the line that has a slope of −38 and passes through (0, 10) is please help me with this problem.

Answers

Answer:

y = -38x + 10

Step-by-step explanation:

Slope- intercept form:

y + mx = b

Given

m = -38 and point (0, 10)

As per given point, y-intercept is b = 10

So the equation is:

y = -38x + 10

The smallest cube has a length of 6 inches.What are the edge lengths of the other cubes if the ratios of similarity to the smallest cube are 1.25, 4/3, 1.5, 7/4 and 2 respectively

Answers

Ans is in the attachment

hope it helps :)

plz mark as brainliest

Please help I'll give brainliest to right answer
20m + 6m − 17m = 9
What does "M" equal?

Answers

Answer:

m is 1

Step-by-step explanation:

ez mathzzzzzzzzzzz

(Solve by Graphing)
3x - 2y = 4
x + y = -7

Systems of equations solved by graphing please!

Answers

Answer:(2,-9)

Step-by-step explanation:

Layla has a toy car collection of 400 toy cars. She keeps 85% of the toy cars on her wall. How many toy cars does she keep on her wall?

Answers

Answer:

340 cars

Step-by-step explanation:

400*0.85

which is 340

340 cars.

Hope this helps plz hit the crown :D

Times are tough for Peter the Penguin and his "Hug a Penguin" business has been on the decline. Last year Peter the Penguin made $570 dollars from selling hugs. If he experienced a 20% decrease in sales how much did he make this year?

Answers

Answer:

the new sales after decrease in sales percentage this year is $456 dollars

Step-by-step explanation:

The computation of the sales made this year is  shown below:

Given that

last year sales would be $570 dollars

And in this year there is 20% decrease in sales

so, the new sales after 20% decrease would be

= Last year sales × (1 - decreased percentage)

= $570 × (1 - 0.20)

= $570 × 0.80

= $456 dollars

hence, the new sales after decrease in sales percentage this year is $456 dollars

What is the slope of the line through (-7,-8)(−7,−8)

Answers

Answer:

the slope would be 0

Step-by-step explanation:

this is because those are the same 2 points

Help me solve this problem please

Answers

Answer:

-2

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

I dont have an explanation, sorry

Estimate by rounding both numbers to hundreds and then divide.
76 ÷ 57 is approximately

Answers

Answer:

80 / 60 = 1.3 approximately

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

76 → 10057 → 100Divide: 100 ÷ 100 = 1

I hope this helps!

6. A farmer sows a certain crop. It costs $240,000 to buy the seed, prepare the ground, and sow the crop. In one year's time it will cost $93,200 to harvest the crop. If the crop will be worth $350,000, and the interest rate is 7%, what is the net present value (NPV) of this investment?

Answers

Answer:

$0

Step-by-step explanation:

Given that:

Preparation and sowing cost = $240,000

Cost of harvest after a year = $93,200

Worth of crop = $350,000

Interest rate (r) = 7% = 0.07

Net present value of Investment :

[(worth - Cost after 1 year) / (1 + r)] - initial investment cost

[(350,000 - 93,200) ÷ (1 + 0.07)] - 240,000

[256,800 / 1.07] - 240,000

$240,000 - $240,000

= $0

EASY QUICK POINTS

Read the list of properties below.
Two sets of parallel sides
Opposite angles that are congruent
Opposite sides that are congruent
Angles that do not measure 90°


Which polygon would have all of these properties?
rectangle
rhombus
square
trapezoid

Answers

the answer is rhombus...

Answer:

rhombus

Step-by-step explanation:

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