Answer:
The circle is centered at (-8,3) and has a diameter of 20 units
Step-by-step explanation:
<u><em>The correct question is</em></u>
Which is the center and the diameter of the circle?
we know that
The equation of a circle in center radius form is equal to
where
(h,k) is the center of the circle
r is the radius of the circle
In this problem we have
so
The center is the point (-8,3)
The radius is
so
Remember that
The diameter is two times the radius
so
therefore
The circle is centered at (-8,3) and has a diameter of 20 units
Answer:
- $5.058 USD/gal
- $60.70 USD to fill the tank
Step-by-step explanation:
You want to know the cost per gallon of gas and the cost for 12 gallons of gas when the cost per liter is $1.31 CDN and the exchange rate is $1.02 USD per CAD.
<h3>Cost per gallon</h3>
The conversion between liters and gallons is ...
1 US gallon = 3.785411784 liters (exactly)
Then the cost conversion is ...
The cost per gallon in terms of US dollars is about $5.06.
<h3>Cost per tank</h3>
The cost for 12 gallons will be ...
(12 gal)×($5.058 /gal) ≈ $60.70
It will cost you $60.70 to fill your 12 gallon tank.
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<em>Additional comment</em>
The price of gas is routinely specified to tenths of a cent, both in the US and in Canada. As of today, the cost of gas in Canada has declined to $1.864 CAD/liter. At today's exchange rate of about $0.77 USD per CAD, the equivalent price is $5.406 USD/gal.
Hello!
You can distribute the -2
-2 * 5x = -10x
-2 * -0.75 = 1.5
The answer is -10x + 1.5
Hope this helps!
J'K'L'M'N', I believe. Unless there is a graph you'd like to link