A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.
From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.
Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.
Divide everything by 8 to isolate b and you get that b^2=9.
Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.
Now that we know that a=2 and b=3 just plug them into the equation.
-2(2)+3(3)=?
-4+9=?
5
Sorry about having to use this ^ symbol, the equation maker is not working.
Answer:
a =14.3178211
Step-by-step explanation:
a^2 +B^2=C^2
13^2+6^2=C^2
169+36=C^2
205=C^2
C=14.3178211= LENGTH OF AC
If 20 min = 1 day
1 week = + 10 mins
= 30 mins
6 weeks = 60 mins
1 hour 30 mins = 7 weeks
Answer:
Step-by-step explanation:
Set it up as fractions, Alex over Peter.
3/5 : 33/x Let x represent Peter's amount. Now find out: how do you get from 3 to 33? What times 3 equals 33? 11
What you do on the top, you must do on the bottom. If 3 times 11 equals 33, then 5 times 11 equals x. 5 times 11 equals 55, so x equals 55.
Peter will get 55. Don't forget the pound symbol.
Answer:
x = -3
Step-by-step explanation:
-3x + 1 = 10
=> subtract 1 from both sides
-3x = 9
=> divide both sides by -3
x = -3
