To decrease something at 100% by 7% is:
100% - 7% = 93%
You multiply the original value by 0.93 to decrease it from it's original value by 7%
Propportinal
means that the points are inproportion
ratios
1:3=2:6=3:7
1/3=2/6=3/7
1/3=1/3=3/7
false
therefor it is not poropoortional
another way is to graph the points and see if a straight line can go though all of them
it can go thoruhg the first 3 but not eh 4th pont (3,7)
not proportional
Answer:
Step-by-step explanation:
First convert them into improper fractions: 
and 
. Now we add: 
or 
.
A(w)=50w-w2 if the perimeter is 100, I plugged in possible values for the width...I used w=15 and length = 35 for a perimeter of 100. then I plugged these values in the possible equations until I found the correct one giving me an area of 525 (15x35) . I could not think of an easier way.
Answer:
Since x= -3y + 6
Substitute this into equation 2
You now have equation 2 as
2(-3y+6) + 8y = -12
-6y + 12 + 8y = -12
8y - 6y = -12 -12
2y = -24
y= -12
x = -3(-12) + 6
x= 36 + 6
x= 42.
