Answer:
i dont know the question what does it mean
Step-by-step explanation:
Y = total cost
40 = The one time fee
90 = the service charge per month
x = number of months
Where is the point t in question
<u><em>Answer:</em></u>
<u><em>Well first we must see if they are proportional.
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<u><em>46.2/6 = 10.7.8/14
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<u><em>7.7 = 7.7
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<u><em>They are proportional. The rate of proportion is 7.7 ounces per cellphone. Hope this helps!
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<u><em>Step-by-step explanation:</em></u>
Answer:
The center is located at (-1, -2), and the radius is 5.
Step-by-step explanation:
The general equation of a circle is given as
(x - a)^2 + (y - b)^2 = r^2
where
a and b are the centre of the circle and r is the radius
Given the equation
x2 + 2x + y2 + 4y = 20
add 1 ad 4 to both sides
x2 + 2x + 1 + y2 + 4y + 4 = 20 + 4 + 1
factorise
(x +1)^2 + (y+2)^2 = 5^2
comparing with the general equation
a = -1, b = -2, r = 5 (all measured in units)
