The formula for the volume of a cone is useful for this.
V = (1/3)π × r² × h
Substituting the given information, you have
V = (1/3)×3.14×(2 in)²×(18.3 in)
V ≈ 76.616 in³
Your best choice is ...
C. 76.62 cubic inches
Two different things u can do
Substitution:
X-9y=12
+9y +9y
X=9y+12
-3(9y+12)+9y=36
-27y-36+9y=36
+36 +36
-18y = 72
/-18 /-18
Y = -4
Or whatever this other I’ve is called
-3x-9y=36
-1(X-9y)=(12)-1
-3x-9y=36
-x+9y=-12
-4x=24
X= -6
a + 3b = (–4, 11)
Solution:
Given vectors are a = (–1, 2) and b = (–1, 3).
Adding two vectors:
Add first component of one with first component of other and
add second component of one with second component of other
To find a + 3b:
a + 3b = (–1, 2) + 3(–1, 3)
= (–1, 2) + (–3, 9)
= (–1 +(–3), 2 + 9)
= (–1 –3, 2 + 9)
= (–4, 11)
Hence a + 3b = (–4, 11).
Answer:
The length of the square is 10 meters.
Step-by-step explanation:
First, you need to know that a square has four equal sides, and that finding the area of a square means multiplying one side by another side. This means that if you know the area of the square, all you have to do is find the square root of the area to find a side length. So, by using a calculator, you can find that the square root of 100 is 10, which is the length of one side of the square.
Answer: To find the third side of a triangle (there are two answers you could get), you need to use the Pythagorean formula: a^2+b^2=c^2. First answer, 3^2+5^2=c^2. Solve for c. c=5.83. The second answer, 3^2+b^2=5^2. Solve for b. b=4.
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