imbadatmath

if 5x=100, x=20. If we plug this in the equation we get 5(20+2)= 5(22)= 110

I tried 24 but thats not it

so we have 17-3+9-3=14+6=20 so 30 people own a cat or a dog

Alternate way:

there is 17+9-3=23 people we then do 23-3=20 people who own a cat or a dog

The discriminant of the quadratic formula must = 0 to have only one root

b^2 - 4ac = 0

b in the quadratic formula for this case is -2b+2      a is 2b-5     c is 3  

Plug these values into the red equation to find  b = 4

Don's apples = D
Alan's apples = A
D = A * 1.666

A - 30 = (D -30)/5

A = 54
D = 90

Alan had 54 apples at first

can you explain why

maybe explain if possible since i'm still confused on how you got to the answer

can you explain if possible?

This is the question I need help with idk why it wasn't showing up before

4 < sqrt(n) < 10

Is something wrong with web calc? when I type in things and post it, it doesn't show up

Must have been A glitch or something since it says for me "Find the number of positive integers n so that 4

Hope this helps, feel free to tell me if i'm wrong :)

2 log (a - 2b  )  = loga + log b

log (a - 2b)^2  = log (a*b)

This implies that

(a - 2b)^2  =  ab

a^2 - 4ab + 4b^2  = ab

a^2 - 5ab + 4b^2  = 0

(a - 4b) (a - b)  = 0

This implies that

a = 4b   ⇒   a/b  =  4      or

a - b  = 0  ⇒   a  = b  ⇒   a/b  =  1