Answer:
$560
Step-by-step explanation:
2% of 8000 = 160,
160 * 3.5 = 560
Your problem is giving you d in terms of t, meaning that it is asking if we replace t with 11, what would d be?
When a number is right in front of a variable, they are being multiplied
So if t is 11, and the problem shows 11t, we replace the t with 11 and put parentheses around it
d = -20 + 11t
d = -20 + 11(11)
d = -20 + 121
d = 101
And there you have it! Your final answer is d = 101!
Practice pre-algebra and plugging in numbers into equations! Having mastery over the basic math functions and rules, as well as Order Of Operations, makes all of this so much easier!
I recommend that you watch Khan Academy videos and practice problems on there! It is a great resource! What you are learning would most likely fall under pre-algebra!
Answer:
Surface Area = 560.41 cm2
Volume (if it's a sphere) = 9979.71 cm3 or around 10 liters
Step-by-step explanation:
1. The circunference formula is C = 2 * π * R
2. If C = 83.92cm, R is 13.356 cm --> R = C / (2π)
3. The surface area formula is A = π * R * R
4. For R = 13.356 cm, A = 560.41 cm2
5. Sphere volume is V = (4/3) * π * R * R
6. For R = 13.356 cm, V = 9,979.71 cm3
7. 1,000 cm3 = 1 liter, so V is aprox. 10 Liters