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Shalnov [3]
2 years ago
8

Please can someone help me with this question?

Mathematics
1 answer:
zhannawk [14.2K]2 years ago
7 0

Answer:

a = 16 π cm²      Exact answer

a = 50.24 cm²       Decimal approximation

Step-by-step explanation:

Radius of the circle

16/2 = 8

Area of the circle

a = πr²

a = π4²

a = 16 π cm²      Exact answer

a = 16 * 3.14

a = 50.24 cm²       Decimal approximation

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3x-2y=-39 and x+3y=31 solution using elimination
Kobotan [32]
This is hard to write... I hope this makes sense to you...
3x-2y=-39
x+3y= 31
We want to use elimination therefor, we need to either get our x or our y to add together to get zero. 
To do this, we will multiply -3 to (x=3y=31) 
NEW EQUATION
3x-2y=-39 PLUS
-3x-9y= -93 Equals
Answer: -11y= -54 
y= 4.9
Plug in to solve for x (put new y in)
3x-2(4.9)=-39
x= -9.73 
5 0
3 years ago
Read 2 more answers
Factor this polynomial -3x^2-16x-5 ​
dlinn [17]
The answer is -(3x+1)(x+5)
6 0
3 years ago
Rohan did a survey in four bird parks and wrote the following observations:
stiks02 [169]

Answer:  Park P

Step-by-step explanation:

Since, According to the question,

Number of yellow bird in park P = 33

Total number of the bird in park P = 53

Thus, the percentage of yellow bird in park P = \frac{33}{53} \times 100= 62.264150943% ≈ 62 %

Number of yellow bird in park Q = 20

Total number of the bird in park Q = 48

Thus, the percentage of yellow bird in park P = \frac{20}{48} \times 100=41.666666666% ≈ 42%

Number of yellow bird in park R = 54

Total number of the bird in park R = 90

Thus, the percentage of yellow bird in park R = \frac{54}{90} \times 100= 60 %

Number of yellow bird in park S = 44

Total number of the bird in park S = 83

Thus, the percentage of yellow bird in park P = \frac{44}{83} \times 100=53.012048192 % ≈ 53 %

Since, 62% > 60% > 53% > 42%

Therefore, highest percentage of the yellow bird is 62 %

Which is present in park P.

8 0
2 years ago
Please help me with the math please?
Oxana [17]

Answer:

count how many flowers there are on number 1

8 0
2 years ago
Read 2 more answers
What is the positive solution to the equation 3x^2−12=0?
pantera1 [17]

Answer:

  • B) 2

Step-by-step explanation:

<u>Solve the equation:</u>

  • 3x² - 12 = 0
  • x² - 4 = 0
  • x² = 4
  • x = √4
  • x = 2 is the positive solution

Correct choice is B

3 0
2 years ago
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