Work out the value of (1.7 x 10^4) x (8.5 x 10^-2) give your answer in standard form

I got 1445

Step-by-step explanation: First, multiply 1.7 by 10000. You are then left with 17000. Next multiply 8.5 by .01 to get .085. Now all you have to do is multiply 17000 by .085 to get 1445

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a