Answer:
x = 5.61 or -1.61
Step-by-step explanation:
6x² - 24x - 54 = 0
6(x² - 4x - 9) = 0
x = [4+-√(4²)-4(1)(-9)]/2(1)
= (4+√52)/2
= 5.61
= (4-√52)/2
= -1.61
Answer:
Parallel lines don't meet at a point
Answer:
6
Step-by-step explanation:
If the sum of the digits of a number is divisible by 9, then the number is divisible by 9.
So 6+7+8+5+Δ+4 = Δ + 30 has to be divisable by 9, and of course 0≤Δ≤9
36 is divisable by 9, so Δ has to be 6.
Answer:
The answer would be 36^2=x
Step-by-step explanation:
Answer:
First number: 71/7
Second number: 135/7
Third number: 270/7
Step-by-step explanation:
First number = x
Second number= 2x-1
Third number= 2(2x-1)
x+(2x-1)+2(2x-1)= 68
3x-1+4x-2=68
7x-3=68
7x=71
x=71/7
You can check by plugging in the x into the equation.
