Answer:
1240000 (3 sig. fig.)
Step-by-step explanation:
1000000x(1.075)^3 ~= 1242296.875 = 1240000 (3 sig. fig.)
Answer:
5 x 2
Step-by-step explanation:
5 x 2 is the answer because it says she ran 5 miles and took 2 hours to complete!
9514 1404 393
Answer:
5 1/16 ft
Step-by-step explanation:
h(t) = -16t(t -18/16) . . . . put in intercept form
The function describes a parabola that opens downward. It has zeros at t=0 and t=9/8. The maximum height will be found at the vertex of the parabola, halfway between these zeros.
f(9/16) = (-16)(9/16)² +18(9/16) = 81/16 = 5 1/16 . . . . feet
The approximate maximum height of the leopard is 5 1/16 feet.
a)
![\dfrac{\$0.10}{1000\,Wh}\times 50\,W\times 9\,h=\dfrac{\$0.10\cdot 50\cdot 9}{1000}=\bf{\$0.045}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5C%240.10%7D%7B1000%5C%2CWh%7D%5Ctimes%2050%5C%2CW%5Ctimes%209%5C%2Ch%3D%5Cdfrac%7B%5C%240.10%5Ccdot%2050%5Ccdot%209%7D%7B1000%7D%3D%5Cbf%7B%5C%240.045%7D)
b) The cost per year is 365 times this amount. You save 35/50 times that, so you save ...
... $0.045×365×35/50 = $11.4975 ≈ $11.50 . . . annual savings
_____
If the bulb is using 15 W instead of 50 W, you are saving the cost of 50-15=35 W, so 35/50 of the cost of running the higher-power bulb.
Answer:
12 years = 16 USD
15 years = 20 USD
Step-by-step explanation:
15 years =72:4= 18 we round to 20 for 15 years
12 years = 20+20 = 40
72-40 = 32 : 2 = 16 USD for 12 years