Answer:
GIVEN,
Initial velocity of the rocket = 12800miles/hour
1 mile = 5280 feet
Initial velocity of the rocket in miles/second = (12800*5280)/60*60 feet/second = 18773.33333...feet/second.
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Answer:
Step-by-step explanation:
x-y=7
-3x+9y=-39
Divide the second equation by 3
-x +3y = -13
Add this to the first equation
x-y=7
-x +3y = -13
----------------------
0x +2y = -6
Divide by 2
2y/2 = -6/2
y = -3
Now find x
x-y = 7
x -(-3) = 7
x+3 = 7
Subtract 3 from each side
x = 4
(4,-3)
Or by substitution
x-y=7
solve for x
x = 7+y
-3x+9y=-39
Substitute y+7 in for x
-3(7+y) +9y = -39
Distribute
-21 -3y +9y = -39
Combine like terms
-21 +6y = -39
Add 21 to each side
6y = -18
The area of a circle with a Diameter of 10 is 78.54
First, you have to convert 1/4 and 1/3 to have the same denominator.
So, 1/4 x 3 = 3/12. 1/3 x 4 = 4/12.
Now, you can add 3/12 + 4/12 = 7/12.
