Answer:
x=5
Step-by-step explanation:
write x - 4 as a fraction with denominator = 1
5/x = (x - 4)/1
Now cross multiply
x(x - 4) = 5 multiply out and collect all terms on the left side of the equal sign
x2 - 4x - 5 = 0 factor the quadratic into two binomials
(x - 5)(x + 1) = 0 the product of two numbers = 0 when either number is zero
Therefore x = 5 or x = -1
We know, surface area of cube = 6a²
So, side length of 1st cube = a² = 81/6
a = 3.67
Side length of 2nd cube = a² = 144/6
a = 4.90
Now, volume of cube = a³
Volume of 1st cube = 3.67³ = 49.43
Volume of 2nd cube = 4.90³ = 117.64
So, Ratio = 49.43 / 117.64 = 1/2.38
In short, Your Answer would be: 1: 2.38
Hope this helps!
Y=x^2
y=1/3(x+4)^2-9
Hope this helps
It is different because to find out the answer, change all denominators to 10, since the LCD is 10.
6/10-5/10=1/10
6/10-6/10=0/10
1/10 is not equal to 0/10
