If you would like to know if 4x2x2 is the same as 4x4, you can find out using the following step:
2x2 equals to 4, so instead of 2x2 you can write 4.
The result is: 4x2x2 = 4x(2x2) = 4x4, which is the same as 4x4 in the second part of the question.
D= 12+25. Hope it helps, I did this question
Answer:
h = 8.00 inches , which is answer B
Step-by-step explanation:
The formula to calculate the Volume V of a cone is:
V = 1/3*pi*r²*h
Given:
V = 33.5 in³ pi = 3.14 and r = 2 in
This time the Volume is given, but you need to calculate the height h. So let's rewrite the formula, so it starts with h =
V = 1/3*pi*r²*h
multiply left and right of the = sign by 3
3/3*pi*r²*h = 3*V
divide left and right of the = sign by pi*r²
h = 3*V/(pi*r²)
V = 33.5 in³
pi = 3.14
r = 2 so r² = 4 in²
h = 3*33.5/(3.14*4)
h = 8.00 inches , which is answer B
6(x + 3) = 3x - 3 Given
6x + 18 = 3x - 3 Distribute the 6
6x = 3x - 21 Subtract 18 from both sides
3x = - 21 Subtract 3x from both sides
x = -7 Divide both sides by 3
5x - 2 = 3(x + 2)
5x - 2 = 3x + 6
5x = 3x + 8
2x = 8
x = 4
Jeff's solution is incorrect; his solution is incorrect because he added 3x to the left side when he should have subtracted it to cancel it from the right side.
Hope this helps.