The area of circle Z is 64x ft?.
What is the value of ?

r= 4 ft
r= 8 ft
r= 16 ft
r= 32 ft

4 ft

Step-by-step explanation:

To calculate the area of a circle is πr^2

π means 3.142

r means?

Area of the circle is given as 64

So let solve the question

3.142×r^2=60

3.142r^2=60

Divide both sides by 3.142

r^2=19.096

Square root of both sides

r=4.37~4

Therefore the final answer for r is 4 ft

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752