Numbers that are 510 to 540 (with zeroes) I'm not too sure about the ones place but also numbers 1-4. For example, 521, 1 rounded to 20 = 20. 20 rounded to 500 = 500. You get me?
It would be the last answer because if you multiply the percentage 30% times 70 you get 21, and 50% gets you 35.
If both dealers sold 70 total cars, Car Dealer B sold 14 more blue cars.
x=7 or x=-6
Let's solve your equation step-by-step.
0.25x2−0.25x−10.5=0
For this equation: a=0.25, b=-0.25, c=-10.5
0.25x2+−0.25x+−10.5=0
Step 1: Use quadratic formula with a=0.25, b=-0.25, c=-10.5.
x=
−b±√b2−4ac
2a
x=
−(−0.25)±√(−0.25)2−4(0.25)(−10.5)
2(0.25)
x=
0.25±√10.5625
0.5
x=7,−6
