Answer:
R = 11
C ≈ 69.12
A ≈ 380.13
Step-by-step explanation:
R = d ÷ 2
C = 2πr
A = 2πr²
Answer:
Second one
Step-by-step explanation:
if 2x - y = 4
then 2x + 4 would have to = y
The equation where 2x + 4 = y is the second
y = 2x + 4
Answer:
m=5
Step-by-step explanation:
Let the number be represented by m.
Then twice the number m is represented as 2* m or 2m.
3 less than twice the number m = 2m -3
As per the question this value is 7.
Representing this in equation format:
=> 2m-3 = 7
=> 2m = 7+3 = 10
=> m= 10/2 = 5
Hence the number m is given by 5.
Verification:
Twice the number = 2* 5 = 10
3 less than twice the number m = 10 -3 = 7
This is the same as 7 as per the requirement.
Answer:
y=-x+2.5
Step-by-step explanation:
Answer: B
Step-by-step explanation: This is because C = circumfrence and R = radius
and pi is 3.14 which is the formula for finding the circumfrence of a circle
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