Answer:
length is (-7,-1) and radius is 6
Step-by-step explanation:
We are given the expression of the equation of a circle that is
x2 + y2 + 14x + 2y + 14 = 0.
Using completing the squares:
x2 + y2 + 14x + 2y + 14 = 0(x+7)^2 + (y+1) ^2 = -14 + 49 + 1(x+7)^2 + (y+1) ^2 = 36 center thus is at (-7,-1) and the radius is equal to square root of 36 equal to 6.
25 surf boards and 19 puddle boards were rented.
Step-by-step explanation:
Given,
Rent of each surf board = $45
Rent of puddle board = $60
Total boards rented = 44
Total amount = $2265
Let,
x represent the number of surf boards rented
y represent the number of puddle boards rented
According to given statement;
x+y=44 Eqn 1
45x+60y=2265 Eqn 2
Multiplying Eqn 1 by 45
Subtracting Eqn 3 from Eqn 2
Dividing both side by 15
Putting y=19 in Eqn 1
25 surf boards and 19 puddle boards were rented.
Keywords: linear equation, elimination method
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Answer:
The correct answer is A
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9x$32 + 15 is the total debt.
which would be $303.