Hi there!
When we have an equation standard form...

...the formula of the discriminant is
D = b^2 - 4ac
When
D > 0 we have two real solutions
D = 0 we have one real solutions
D < 0 we don't have real solutions
1.) Find the value of the discriminant and the the number of real solutions of
x^2-8x+7=0
Plug in the values from the equation into the formula of the discriminant

D > 0 and therefore we have two real solutions.
2.) Find the value of the discriminant and the number of real solutions of
2x^2+4x+2=0
Again, plug in the values from the equation into the formula of the discriminant.

D = 0 and therefore we have one real solution.
~ Hope this helps you.
I would say 95/6 because you multiply 5 and 15 and turn it into an improper fractions
Answer:
add all the numbers
Step-by-step explanation:
Answer:
157 and 1/5 meters
Step-by-step explanation:
52 and 1/2 meters times 3 is equal to 157 and 1/2