X^n = a
x^2 = 16
Square root of 16 = 4
The root is 4
Answer:
16 ft
Step-by-step explanation:
The circumference of a circle is given by
C = pi d
where d is the diameter
50.24 = 3.14 *d
Divide each side by 3.14
50.24/ 3.14 = 3.14d/3.14
16 = d
Multiply by 100, as per cent means per 100.
Answer:
x=5 twice
Step-by-step explanation:
x^2-10x+25=0
multiply the coefficient of x^2 and the last term
1X25=25
find two numbers you can multiply to get 25 and add to get -10
-5 + (-5)=-10 the middle term
replace -10x with -5x -5x and solve the equation
x^2-5x-5x+25=0
factorise by grouping
x(x-5)-5(x-5)=0
(x-5)(x-5)=0
Either x-5=0,x=5 or x-5=0,x=5
Therefore x=5 twice.
Answer:
0.4 or 4/10 as a fraction
Step-by-step explanation:
