So x + y = 45, and 4x + 5y = 195. Get y by itself. Subtract x from both sides in the first equation to get y = 45 -x, and subtract 4x from the second equation to get 5y = 195 - 4x. Divide by 5 to both sides to get y = 39 - 4/5x. 39 - 4/5x = 45 - x. Add x to both sides to get 39 - 1/5x = 45. Subtract 39 from both sides to get -1/5x = 6. Divide by -1/5 to get x = -30, or 30. In the first equation, do 30 + y = 45. Subtract 30 from both sides to get y = 15. Check. 4(30) + 15(5) = 195, or 120 + 75 = 195.
Answer
jermy
Step-by-step explanation:
P(t)= A(1/2)^(t/h)
P(t)=10(1/2)^(16/8)
<em>(1/2)^(16/8) =.25</em>
P(t)=10(.25)
P(t)=2.5
Therefore the answer is B. 2.5mg.
Okay okay that is correct
Here's your answer bro/ette 36
Step-by-step explanation:
(3*4)2/(6 - 4)3= 36
