ill do as many as i can but i cant promise ill do them all
section 1:
(-13,-4) (-10,10) (-6,-13) (0,-14.5) (6,-13) (10,-11) (12,-8)
Answer:
- 64 gallons 30%
- 96 gallons 55%
Step-by-step explanation:
The amount of each brand can be found by writing and solving an equation that makes use of the given relations.
<h3>Setup</h3>
Let x represent the quantity of 55% pure antifreeze needed in the mixture. Then the quantity of the 30% brand is (160-x). The amount of pure antifreeze in the mixture is ...
0.55x +0.30(160 -x) = 0.45(160)
<h3>Solution</h3>
Subtracting 0.30(160), we have ...
x(0.55 -0.30) = 160(0.45 -0.30)
x = 24/0.25 = 96 . . . . . simplify, divide by the coefficient of x
96 gallons of the 55% brand, and 64 gallons of the 30% brand must be used.
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Read more about mixture problems here:
brainly.com/question/26751698
Answer:
3
Step-by-step explanation:
The number of tubes can be found from an inequality that relates the number of square inches that can be painted to the number of square inches that must be painted.
Let t represent the number of tubes.
1400t ≥ 3672 . . . . . the number of tubes that will paint at least 3672 in²
t > 2.623 . . . . . divide by 1400
If only whole numbers of tubes are available, then ...
3 tubes are needed to paint the ramp.
Answer:
Step-by-step explanation:
3x²+2y²-24 x+30=0
3(x²-8x+16-16)+2y²+30=0
3(x-4)²+2y²-48+30=0
3(x-4)²+2y²-18=0
(x-4)²+y²/(3/2)=18
(x-4)²/18+y²/27=1
it represents a parabola with center (4,0)
Most of the population would be A. Seniors, because mostly Seniors attend to dances.
