Which equation has the components of 0 = x2 - 9x - 20 inserted into the quadratic formula correctly?
O
x
= -9 V(-9)2 - 4(1)(-20)
x= 91V(- 9)2 - 4(1)(20)
2(1)
x= 9:(-92 - 4(1)(-20).
2(1)
x= -9 1(-9)2 + 4(1)(-20)
2(1)

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b