If the diameter of a circle changes from 6 cm to 12 cm, how will the circumference change? a) multiplies by 1 2 b) multiplies by 2 c) increases by 6 d) decreases by 6

The formula for the circumference of a circle is 2*r*pi, where r is radius, and r=d/2.

If d = 6cm, then r = d/2 = 3 cm, and the circumference is 2*r*pi = 6*pi

If d = 12cm, then r = d/2 = 6 cm, and the circumference is 2*r*pi = 12*pi

12*pi/6*pi = 2

The circumference will be B)multiplied by 2.

for b its (t) and c its (d)

step-by-step explanation:

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: