Answer:
1. 72 
3. 79 
Step-by-step explanation:
The mean is found by dividing the sum of the inputs by the total number of inputs.
Answer:
1. 18
2. 49.5
3. 48
Step-by-step explanation:
1. Since it is 3 dogs to 1 person we need to multiply 6 with 3, so we get 18 dogs!
2. Since 2 books equal 8.25, we just need to multiply 8.25 by 6, which we get 49.5 from!
Hope this helps and don't forget to follow!
5x²+13x-4-17x²-7x+19+15x²+5x-21x-7=
=5x²+15x²-17x² +(13x-7x+5x-21x) -4-7+19=
=3x²-10x+8
1 foot=12 inches
Divide 12 from 156.
156÷12=13
Janna jumped 13 feet in the long jump competition, which is actually really good!
To solve this, we must first put both lines in Slope Intercept Form (y=mx+b where m is the slope and b is the y-intercept).
y=3x-5 is already in SIF, so we only need to work on the other one.
x+3y=6
-x -x
3y=-x+6
/3 /3
y=-1/3x+2
Now we have both equations in slope intercept form, so we can start graphing from the y-intercepts and just follow the slopes.
When we do this, we will see that the lines meet at an exactly 90° angle. When a pair of lines does this, it means they are perpendicular.
Below I have attached an image that has both lines graphed so that you may visualize it. The green dots show the slopes, while the highlighted areas show the y-intercepts. Note that the lines intersect at a 90° angle, making them perpendicular.