Yes
Step-by-step explanation:
4×7=28
and 7×4 also equal to 28
Let's get started!! hahah
The tenths place is the place right after the decimal
When rounding,
This number either stays the same (if the number after it is lower than 5)
or increases by 1 (if the number after it is 5 or greater)
1) 29.516. 5 is in the tenths place look at the number after this.. 1: it is LESS THAN 5 so the answer is 29.5
2) 84.78 7 is in the tenths place look at the number after this.. 8: it is GREATER THAN 5 so the answer is 84.8
3)1017.36 3 is the tenths place look at the number after this.. 6: it is GREATER THAN 5 so the answer is 1017.4
Hope that helps
Answer:
dh/dt = 0.4 m/min
Step-by-step explanation:
The volume of the cone is:
V(c) = (1/3)*r² *h if always h = 3r then r = h/3
The volume of the cone as a function of h will be:
V(h) = (1/3)* (h/3)²*h
V(h) = (1/27)*h³
The increasing rate of the volume is equal to the rate of sand added the:
D(V)/dt = (1/27)*3*h²*dh/dt
D(v) / dt = 10 m³/min
h = 15 m and dh/dt is the rate of increasing of the height
By substitution
10 m³/min = ( 1/9)* 225 * dh/dt (m²)
dh/dt = 90 / 225 m/min
dh/dt = 0.4 m/min
Divide 309 by 3. You should get 103 (hamburgers). if you multiply that by 2 you will get 206 (cheeseburgers). Add the two together you get the total which was 309 originally.
103 hamburgers and 206 cheeseburgers.
