Answer:
x>-6
graphing (-6,0)
Step-by-step explanation:
3-5x<-4x+9-- Add 5x to -4x
3<x+9--- subtract 9 from both sides
-6<x
Answer: No, 64/81 is not a perfect square.
Step-by-step explanation: A perfect square is a whole number multiplied by itself again to get a perfect square.
A correct example of a perfect square would be 3/9 because 3 x 3 = 9.
Scale : 1 inch = 30 miles
So, the ratio between the distance on the map and the real distance is 1:30
When a quantity increase/decrease in a ratio, the other one increase/decrease respectively.
Call the miles we have to go : x
1:30 = 4.5:x
(1x4.5):(30x4.5) = 4.5 : x
4.5 : 135 = 4.5 : x
So, x = 135 => We have to go 135 miles to get to the place we want to go.
Answer:
2(x+4)-1=2x+7 is true for everything
Step-by-step explanation:
2(x+4)-1
2(x+4)
=2x+2*4
=2x+8
=2x+8-1
=2x+7
2x+7=2x+7
2x=2x
2x-2x=2x-2x
0=0
true for all x
Answer:
12 pi
Step-by-step explanation:
First find the area of full circle
A = pi r^2 where r is the radius
A = pi (4)^2
A = 16 pi
This is 3/4 of a circle so multiply the area by the fraction of a circle
3/4*16pi = 12 pi
