Find 85 - 72 x 4 ÷ 2 (13 - 11)
1 answer:
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Answer:
1.8 in.
Step-by-step explanation:
Hi there!
<u>1) Determine the radius of the base</u>
where r is the radius of the base and h is the height of the cone
Plug in the known values (h=4.2, V=3.6)
Isolate r; divide both sides by 4.2
Multiply both sides by 3
Divide both sides by π
Take the square root of both sides
<u>2) Determine the diameter</u>
Now that we have the radius, to find the diameter, multiply r by 2:
Therefore, the diameter is 1.8 in. when rounded to the nearest tenth.
I hope this helps!
Answer:
(7, -3)
Step-by-step explanation:
Add the two equations to eliminate x:
7y = -21
Then solve 7y = −21 for y:
=
(<em>Divide both sides by 7)</em>
y = -3
Now that we've found y let's plug it back in to solve for x.
Write down an original equation:
2y - 3x = -27
Substitute -3 for y in 3y - 3x = -27:
(2)(-3) - 3x = -27
-3x - 6 = -27 (<em>Simplify both sides of the equation</em>)
-3x - 6x + 6x = -27 + 6 (<em>Add 6 to both sides</em>)
-3x = -21
=
(<em>Divide both sides by -3</em>)
x = 7