<u>Answer:</u>
r = 
<u>Step-by-step explanation:</u>
Multiply both sides by r + 120.
<em>t </em>(<em>r </em>+ 120) = 120<em>r</em>
Expand.
<em>tr </em>+ 120<em>t </em>= 120<em>r</em>
Subtract <em>tr</em> from both sides.
120<em>t </em>= 120<em>r </em>- <em>tr</em>
Factor out the common term <em>r</em>.
120<em>t </em>= <em>r </em>(120-<em>t</em>)
Divide both sides by 120 -<em> t</em>.
= r
Finally, switch <em>r</em> to the left side and you get your answer.
//also, sorry for answering late.. my wifi is poopy//
85, 87, and 89 are the integers
Answer:
No, this is not a function.
Step-by-step explanation:
*Domain - {0,1,3,5}
*Range - {2,5,2,4.8}
Rule: <em>A function is a special type of relation in which each value of the </em><em>domain is paired with </em><u><em>exactly one value</em></u><em> of the range.</em>
Since 0 pairs with both 2 and 5, this would not be a function.
Hope this helps!
Suppose Alex has 3x stamps, Freddy has 5x stamps. After Freddy gives Alex 10 stamps, Alex has 3x+10 while Freddy has 5x-10
the new ratio is 7 to 9, so we have the equation: (3x+10)/(5x-10)=7/9
9(3x+10)=7(5x-10)
27x+90=35x-70
160=8x
x=20
So Alex has 3*20=60 stamps while Freddy has 5*20=100. Together they have 160
