Answer:
His error is multiplying by 4 sides as he thought it was total surface not lateral surface area- the final answer is 12
Step-by-step explanation:
He should have multiplied it by 3, because the 3 sides- not including the base- is what lateral surface area is. He originally did total surface area not lateral surface area so each sides area is 4m squared then you just multiply it by 3 and its 12
16b +5c -10 -8c +2b
18b - 3c -10
change 1 2/3 to an improper fraction
(3*1+2)/3 = 5/3
5/3 divided by 4/5
copy dot flip
5/3 * 5/4
25/12
2 with 1 left over
2 1/12
Choice c
Answer:
Let the smaller number be x
Then the sum is
(6 + 2x) + x = 27
We now find for x
2x + x + 6 = 27
3x + 6 = 27
3x = 27-6
3x = 21
x = 21/3
x = 7
Therefore the smaller number is 7
The larger number is (2×7) + 6 = 20
When converting from meters to centimeters, you have to multiply the number by 100 because there are 100 centimeters per meter.
8.6m x 100= 860cm
Quan bought 860 centimeters of fabric.
