Using the quadratic formula to solve 7x2 – x = 7, what are the values of x?

2nd option

Hope this helps you...

Step-by-step explanation:

Choice B is correct answer.

Step-by-step explanation:

We have given a quadratic equation.

7x²-x =  7

7x²-x-7 =  0

ax²+bx+c = 0 is general quadratic equation.

x =(-b±√b²-4ac) / 2a is quadratic formula to solve equation.

comparing general equation with given equation, we have

a = 7 , b= -1 and c = -7

Putting above values in quadratic formula , we have

x = (-(-1)±√(-1)²-4(7)(-7) ) / 2(7)

x = (1 ±√1+196) / 14

x = (1±√197) / 14 which is the answer.

answer: 2 litters juice bottle

half of a gallon is 50% of a full gallon 2 litters of juice is 52% of a full gallon

hope this ^_^

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.