Answer:
surface area is 39
Step-by-step explanation:
add the areas of each geometric figure making up the composite 3D figure.
first 3D figure
2+2+6+6
=16---eq 1
from third 3D figure
4+4+10+5
= 23
from 1 and 2
16+23
= 39
may be!! I'm not sure bout this answer
Answer:
16
Step-by-step explanation:
So first we can set up the expression.
(12-8)^3-24*2
Start with what is in the parentheses.
4^3-24*2
Follow Order of Operations and do the exponent first.
64-24*2
Multiplication next.
64-48
Subtract.
16
(x+20)/2 = 3x
x+20 = 6x
6x - x = 20
5x = 20
x = 4
Answer: 0.68 or 13.92
Step-by-step explanation:
If the height is 47 meters, then the height, h, is equal to 47.
![47=73t-5t^2\\\\5t^2 - 73t+47=0](https://tex.z-dn.net/?f=47%3D73t-5t%5E2%5C%5C%5C%5C5t%5E2%20-%2073t%2B47%3D0)
Using the quadratic formula,
![t=\frac{-(-73) \pm \sqrt{(-73)^{2}-4(5)(47)}}{2(5)}\\\\\\t=\frac{73 \pm \sqrt{4389}}{10}\\\\\\ t=\frac{73+\sqrt{4389}}{10}, \frac{73-\sqrt{4389}}{10}\\\\\boxed{t \approx 0.68, 13.92}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-%28-73%29%20%5Cpm%20%5Csqrt%7B%28-73%29%5E%7B2%7D-4%285%29%2847%29%7D%7D%7B2%285%29%7D%5C%5C%5C%5C%5C%5Ct%3D%5Cfrac%7B73%20%5Cpm%20%5Csqrt%7B4389%7D%7D%7B10%7D%5C%5C%5C%5C%5C%5C%20t%3D%5Cfrac%7B73%2B%5Csqrt%7B4389%7D%7D%7B10%7D%2C%20%5Cfrac%7B73-%5Csqrt%7B4389%7D%7D%7B10%7D%5C%5C%5C%5C%5Cboxed%7Bt%20%5Capprox%200.68%2C%2013.92%7D)
The formula for the relationship between triangle sides is the following
b-c < a < b+c and b>c or a-c < b < a+c and a > c etc...
A) 11-5 < 4 < 11+5 => 6 < 4 < 16 =>
this double inequality is not true and these three sides can't form triangle
B) 22-17 < 14 < 22+17 => 5 < 14 < 39
this double inequality is true and these three sides can form triangle
C) 28-15 < 10 < 28+15 => 13 < 10 < 43 =>
this double inequality is not true, the conclusion is yours.
D) 30-15 < 14 < 30+15 => 15 < 14 < 45 =>
this double inequality is not true, the conclusion is yours.
Good luck !!!!