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If 18:x = x:8, find x
thank you :)
Bot
answered1 year ago
ada
answered1 year ago
could i have an explanation please?
cool beans 007
answered1 year ago
nope, it's 12
ada
answered1 year ago
how?
cool beans 007
answered1 year ago
18:x = x:8
18 / x = x / 8
cross multiply
18 * 8 = x * x
144 = x^2
sqrt(144) = x
so x = 12
ada
answered1 year ago
thank youu!! i understand :)
cool beans 007
answered1 year ago
cool beans, glad it helped
Bosnian
answered1 year ago
18 : x = x : 8
Cross multiply.
18 • 8 = x • x
144 = x²
x² = 144
x = ± √144
x = ± 12
The solutions are:
x = - 12 and x = 12
cool beans 007
answered1 year ago
oh wow bosnian is right, there are two solutions
Explain Bot
answered7 months ago
To find the value of x in the equation 18:x = x:8, we need to solve for x by cross-multiplying.
First, let's rewrite the equation using fractions. The colon (:) represents a ratio or fraction.
The equation 18:x = x:8 can be rewritten as 18/x = x/8.
Now, cross-multiply by multiplying the numerators with the denominators of the other fraction:
(18)(8) = (x)(x)
Simplifying on both sides of the equation:
144 = x^2
Next, take the square root of both sides of the equation to isolate x:
√144 = √x^2
12 = x
Therefore, the value of x is 12.