Average velocity is equal to the change in distance / change in time :
v(avg) = s / t
that's the average distance, but at some point the object could have moved faster / slower and we want to see the instantaneous velocity. The principal is the same. You take a a little piece of the road for a little piece if time and get the avg velocity of the tiny part of the road. But this way it will be not the exactly speed at that moment, it will be just the avg speed in the little fragment. So we must add limits. What will be the velocity for so tiny part of time that it approaches zero?
We get :
lim s/t = ds/dt
t->0
6. True_____________ marked price is the price printed on an item.
7. True_____________ percentage profit and loss is calculated as a percentage of the cost price.
8. False_____________ 30% as a decimal is 0.03.
9. True_____________ sales tax is also known as VAT.
10. False____________ the hire purchase price is also known as the down payment.
Hi there,
Remove parenthesis,
7 + 9 + (-4)
Then, use the addition and subtraction rules:
7 + 9 - 4
Hence, the answer is 12 (C)
Hope this helps :)
Check the picture below.
first off let's check what "h" is in the triangular face.
so, the gazebo has 4 squarish faces, each 12x12, recall 48 ÷ 4 = 12, and it has 4 triangular faces, each with a height of 8 and a base of 12.
notice we're skipping the top and bottom of the cube and the bottom of the pyramid because they're not part of the "surface area".