Answer:
380 + 6 + 14
Step-by-step explanation:
The sum of 386 and 14 is 386 + 14 = 400.
To find which stategy he used, we find the results of each sum, and it has to be 400.
380 + 6 + 14
380 + 6 + 14 = 386 + 14 = 400
So this is the strategy that he could have used.
380 + 14 + 14
380 + 14 + 14 = 394 + 14 = 408
Result different of 400, which means that this was not the strategy
386 + 10 + 4 + 14
386 + 10 + 4 + 14 = 386 + 14 + 14 = 408
Result different of 400, which means that this was not the strategy
386 + 14 + 80 + 6
386 + 14 + 80 + 6 = 400 + 86 = 486
Result different of 400, which means that this was not the strategy
Answer:
The side length is 9 m
Step-by-step explanation:
The area of a square is given by
A = s^2
81 = s^2
Take the square root of each side
sqrt(81) = sqrt(s^2)
9 =s
The side length is 9 m
Answer:
r=1.8
Step-by-step explanation:
Answer: x=2.25
Step-by-step explanation:
-3x+10=5x-8
+3x +3x
10=8x-8
+8 +8
18=8x
18/8=8x/8
2.25=x
Answer:
Step-by-step explanation:
if the radius is one (1) and the also h is one (1) we can see that 2/3 pi for the hemisphere is going to be much larger than 1/3 pi for the cone
