Answer:
90
Step-by-step explanation:
The LCM is 90 because once you fill out the pattern which would be 45x1 45x2 45x3 and so on and 2x1 2x2 2x3 and so on you will eventually meet at 90.
Answer:
15
Step-by-step explanation:
5x4=20
5x-1=-5
20-5=15
This is false. An arbitrary number is the same as a random number. It is any number that is not specified, not restricted and not consciously thought of. Simply put, an arbitrary number or a random number is any number that you can think of.
Answer:
x = 1 1/4
Step-by-step explanation:
sqrt( 7x+2) = sqrt(3x+7)
Square each side
(sqrt( 7x+2))^2 = (sqrt(3x+7))^2
7x+2 = 3x+7
Subtract 3x from each side
7x-3x +2 = 3x+7-3x
4x+2 = 7
Subtract 2 from each side
4x+2-2 = 7-2
4x = 5
Divide by 4
4x/4 = 5/4
x = 1 1/4
Check for extraneous solution
sqrt( 7*5/4+2) = sqrt(3*5/4+7)
sqrt( 35/4 + 8/4) = sqrt(15/4+28/4)
sqrt( 43/4) = sqrt(43/4)
Solution is valid
