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Answer:
C 3 cm per present
Step-by-step explanation:
1 = 3cm
2 = 6cm
3 = 9cm
363 in^2
The radius is 11 (as shown in the diagram).
A = pi(r)^2
pi = 3
3(11)^2 = 3*121 = 363 in^2
Answer:
x=4 and y=5
Step-by-step explanation:
Find x by adding the two equations so that the 6y and -6y will cancel out.
You're left with 6x=24 which you divide 6 on both sides to get x=4.
Then to find y you will plug 4 into either equation for x. I chose the second equation, so 4-6y=-26, get -6y alone by subtracting the 4 over to the other side. then -6y=-30, then divide both sides by -6 and you get y=5.
Answer is numbers 10, 30, 70, 90
The 4 numbers must be different and added up and divided by 4 must equal 50.
Four such numbers are 10, 30, 70, 90
We all know that Average = Sum / total of numbers in sum
Addition of these different 4 numbers = 200.
Average = 200 / 4 = 50, the required average.
Problem solved!