Answer:
9x + 36 = 10
Step-by-step explanation:
Given
x + 3 = 
Multiply by the lowest common multiple of 4 and 6, that is 12
12 × x + 12 × 3 = 12 × , that is
9x + 36 = 10 ← equation without fractions
8:2 can be simplified to 4:1. (:
Answer:
Option C is correct i.e. 2.
Step-by-step explanation:
Given the function is f(x) = x² +8x -2.
We can compare it with general quadratic expression i.e. ax² +bx +c.
Then a = 1, b = 8, c = -2.
We can find the number of real root by finding discriminant of the equation ax² +bx +c =0 as follows:-
D = b² -4ac
D = 8² -4*1*-2
D = 64 +8
D = 72.
When D is a positive value, then we have two real roots of the equation.
Hence, option C is correct i.e. 2.
They each have $42 because 7 times 6 is 42 and combined they have $84 because 42 + 42=84.
