Answer:
3. 60°
4. 378.542
Step-by-step explanation:
in the picture
SOH CAH TOA
CAH
Cosine = Adjacent / Hypotenuse
∆ABC, where lets say B is the right angle.
cos C = adjacent/hypotenuse = BC/AC
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D
10 is the size of the sample when it was originally found
Answer:
Volume = 1436.8 cm³
Step-by-step explanation:
Formula for the volume of a sphere = ![\frac{4}{3}\pi r^{3}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B3%7D%5Cpi%20r%5E%7B3%7D)
Here, r = radius of the sphere
For a sphere which has the radius = 7 cm
Volume of the sphere = ![\frac{4}{3}\pi (7)^3](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B3%7D%5Cpi%20%287%29%5E3)
= 1436.76
≈ 1436.8 cm³
Therefore, volume of the sphere is 1436.8 cm³.
The student wants to prove they are the same by adding the two systems together, and keeping the second equation the same.
So add these two:
6x - 2y = 3
<u>5x + 3y = 4</u>
11x + y = 7
So the answer will be the last choice:
<span>Show that the solution to the system of equations 11x + y = 7 and 5x + 3y = 4 is the same as the solution to the given system of equations</span>