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Ilia_Sergeevich [38]
2 years ago
8

What is the formula of circle​

Mathematics
2 answers:
shepuryov [24]2 years ago
7 0
I believe it is A=πr2
gogolik [260]2 years ago
3 0

Answer:

Area = pi r squared

Step-by-step explanation:

If you need to, sometimes your teacher will ask you to leave you answers in terms of pi, or keep pi as 3.

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Graph 6x-2y=2 ,9x-3y=1
enot [183]

It's a linear function. We need only two points to draw a graph.

We choose any values of x and calculate the value of y.

6x-2y=2\qquad|-6x\\\\-2y=-6x+2\qquad|:(-2)\\\\y=3x-1

for x= 0 → y = 3(0) - 1 = 0 - 1 = -1 → (0, -1)

for x = 2 → y = 3(2) - 1 = 6 - 1 = 5 → (2, 5)

9x-3y=1\qquad|-9x\\\\-3y=-9x+1\qquad|:(-3)\\\\t=3x-\dfrac{1}{3}

for x = 0 → y = 3(0) - 1/3 = 0 - 1/3 = -1/3 → (0, -1/3)

for x = 2 → y = 3(2) - 1/3 = 6 - 1/3 = 5 2/3 → (2, 5 2/3)

4 0
3 years ago
Need help please don’t know what to do here
kotykmax [81]

Answer:

Down below

Step-by-step explanation:

a. The range of y = sinθ is [-1,1]

b. The period of y = cosθ is 2π

c. The asymptotes of y = tanθ are -π2, π2, πn

d. The amplitude of y = sinθ is 1

e. The period of y = tanθ is π

f. The max value of y = cosθ is 1

4 0
2 years ago
The number of stories in each of a sample of the world’s 28 tallest buildings follows. Construct a grouped frequency distributio
Masja [62]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

54 79 100 70 75 56 88

55 78 75 55 72 60 80

55 88 80 85 69 71 60

90 64 77 88 65 102 70

Class____frequency____cumulative frequency

54 - 63_____7_____________7

64 - 73_____7_____________14

74 - 83_____7_____________21

84 - 93_____5_____________26

94 - 103____2_____________28

5 0
3 years ago
In a rectangle, the ratio of the width to the length is 4:5. If the rectangle is 40
Marina CMI [18]

Answer:

50 cm

Step-by-step explanation:

4/5 = 40/x

cross multiply

4x=200

x=50

4 0
2 years ago
Read 2 more answers
Using the properties of inequalities, write down the inequality that you will get if you: add the number –5; 2.7; 7; to both sid
sertanlavr [38]

Answer:

Answer:

if you add −5, the inequality is 13 > -12

if you add 2.7, the inequality is 20.7 > -4.3

if you add 7, the inequality is 25 > 0

Hope this helps

3 0
3 years ago
Read 2 more answers
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