Answer:
Step-by-step explanation:
hello :
x²+ y² -12x - 18y +17 = 0 means : (x²-12x+36)-36+(y²-18y+81)-81-27 =0
(x-6)²+(y-9)² =12²....standard form when the center is (-6 , 9) and radius 12
Answer: (-2,2)
Step-by-step explanation:
3x-4y=-14
2(3x+2y=-2)
3x-4y=-14
6x+4y=-4
9x=-18
x=-2
3(-2)-4y=-14
-6-4y=-14
-4y=-8
y=2
Answer: The 2/9 should have been simplified to 2/3. Then multiply 1/7 and 2/3 to find the product, 2/21
You have to "simplify" both factors at the same time before moving on to multiplying them.
Step-by-step explanation:
Another way to do this is to multiply straight across 3/7 × 2/9 to get 6/63 then notice that the numerator and denominator are both multiples of 3.
Simplify by dividing numerator and denominator by 3 to get 2/21
The delivery person will use 6 gallons of gasoline
The function to determine the number of miles in x hours is:
f(x) = x² + 3x
The number of gallons of gasoline used for driving y miles is:
g(y) = y/18
For a delivery person that works a 9-hour shift:
x = 9
f(9) = 9² + 3(9)
f(9) = 81 + 27
f(9) = 108
That is, the number of miles, y = 108 miles
The number of gallons of gasoline used:
g(y) = y/18
g(108) = 108/18
g(108) = 6
The delivery person will use 6 gallons of gasoline
Learn more here: brainly.com/question/16155213
Answer 10.75
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