Answer:
I get 17.
Step-by-step explanation:
Reduce the fraction:
3 ( 3 + 4 ) - 4
Add the numbers:
3 x 7 - 4
Multiply the numbers:
21 - 4
Subtract the numbers:
17
Rewrite the given quadratic equation in standard form: Kx 2 + 2x - 1 = 0
Discriminant = 4 - 4(K)(-1) = 4 + 4K
For the equation to have two real solutions, the discriminant has to be positive. Hence we need to solve the inequality 4 + 4K > 0.
The solution set to the above inequality is given by: K > -1 for which the given equation has two real solutions.
for number 19, figure out the exponents then multiply.
for scientific notaintion you figure out how many numbers are behind the decimal , then do that number as an exponient to 10 then multiply by that number. i hope i made a bit of sense. if not look at kahn academy for help !
Answer:
a
Step-by-step explanation:
