Answer:
D. 1 and 20
Step-by-step explanation:
To solve the equation, factor the quadratic and set the factors equal to 0.
d^2 - 21d + 20 becomes (d-20)(d-1) since -1*-20 = 20 and -1+-20 = -21.
Set each equal to 0 and solve for x.
d-20 = 0 d = 20
d - 1 = 0 d = 1
Answer:
6.00037 x 10^6
Step-by-step explanation:
6000370 in scientific notation
= 6.00037 x 10^6
Answer:
I think it is 3. Because 2 looks to be the radius, 5 looks to be the circumstance , 4 looks to be the height. And 1 maybe the point. That's just what I think.
Step-by-step explanation:
Answer:
58°
Step-by-step explanation:
65°+57°=122°
180°-122°=58°
Answer:
Step-by-step explanation:
it is maximum.
when leading coefficient of x² is negative,
It is downward parabola.
or
y=-2x²+10x+1
=-2(x²-5x+(-5/2)²-(-5/2)²)+1
=-2(x-5/2)²+2×25/4+1
=-2(x-5/2)²+25/2+1
=-2(x-5/2)²+27/2
maximum value of y is 27/2 and is attained at x=5/2
vertex is (5/2,27/2)
