Answer:
A .2; B .25 C .04
Step-by-step explanation:
What we know:
shape is circular
Area=64π yr²
Area=πr²
circumference=2πr
In order to find circumference we need r=radius. We can use the area to find r by solving for r using substitution of the information we know above.
Area=πr²
64π=πr² substitution
64π/π=π/πr² multiplicative inverse
64=r²
√64=√r² properties of radicals
8=r We would get two solutions, a positive and negative one but we will only use the positive solution since radius is positive
Circumference=2πr
C=2π(8)=16π yards
Answer:
gradient m is 2
Step-by-step explanation:
the equation is y=mx+c therefore m is 2.
5t = 25+2r
t = (25+2r)/5 or
t = 5 + (2/5)r
Answer:
The correct solution is C (x> -2)
