Use the formula or complete the square.
The zeroes of the quadratic can be real and rational; real and irrational; complex conjugates.
If the quadratic is ax²+bx+c, x=(-b+√b²-4ac)/2a.
If b² > 4ac the solutions are real. If b²-4ac is a perfect square, the solutions are real and rational; otherwise they’re real but irrational.
If b² < 4ac the solutions are complex.
Yes, he is getting enough. i do not know the inequality
Speed is measured in miles per hour (mph).
<span>The formula Distance equals rate times time (d=rt) can be rearranged and the rate can be solved, </span>
<span>d = r*t => r = d / t . d = 100 miles, time = 6 hours, Rate = 16.66 mph (16 and two thirds). </span>
<span>The same formula can be used for the second part, </span>
<span>21000 / 24 = rate, Rate = 875 kilometers per hour</span>
Answer:
x^2/25-y^/16=1 or y^2/16-x^2/25=1
Answer:
49
Step-by-step explanation:
(-7)² = -7 × -7
-7 × -7 = 49
