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:
9.797. . .
Step-by-step explanation:
2/3 of 144 is 96
Answer:
w=3
Step-by-step explanation:
3w= 9
divide 3 on both sides
3/3 = 9/3
3/3 cancels out
9/3 = 3
Answer:
No, it isn't.
Step-by-step explanation:
A random sampling is one whereby every individual or possible member of a population or large sample has an equal chance of bein selected. Either the participants wants to be a part of the sample or not isn't taken into consideration, each and every member just has an equal Chance of being chosen. Volunteering isn't a random sampling protocol or procedure. By making Selection through volunteering, teachers who are more interested in the program are likely to show more interest, hence availing themselves for the programme. A random selection gives every possible subject an equal chance.
Answer:
The answer is 7.5.
Step-by-step explanation:
Since we're looking for half of 15, divide 15 by 2 (or multiply 15 by 0.5, it's the same thing) and you get 7.5.
I hope this helped! :)
