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.
Let's consider that number to be 'x'..
So, twice the number (2x) is 12 greater than than the half of the number.
So the equation will be like,
2x=12+x/2
Solving this further,
2x=(24+x)/2
=> 4x=24+x
=>4x-x=24
=>3x=24
=>x=8..
So the number is "8".
Answer:
3.456E + 14= 
Step-by-step explanation:
The river discharges
cubic feet of water into the Pacific Ocean each second.
There are 86,400 seconds in one day.
Amount of water discharges each day

Since this differs from what you have, I will explain the scientific notation.
3.456E + 14 simply means 
The options are not well laid out but you can pick the appropriate option.
Answer:
x=12
Step-by-step explanation:
(3x-2)/4+5(x+3)/2
3x-2+20=2(x+3)
3x+18=2x+6
3x-2x=6-18
=x=-12
If no letters or numbers are repeated, then the number of possibilities will be 11,232,000. Then the probability that the license plate is ABC123 or MOM678 will be 1/8,788,000.
<h3>What are permutation and combination?</h3>
A permutation is an act of putting things or elements in the right sequence. Combinations are a method of picking things or pieces from a collection of objects or sets when the sequence of the objects is irrelevant.
A series of license plates are being produced that all have the same pattern of three letters (a-z) followed by three digits (0-9) without any repeats.
If no letters or numbers are repeated, then the number of the possibilities will be
Number of ways = 26 × 25 × 24 × 10 × 9 × 8
Number of ways = 11,232,000
Then the probability that the license plate is ABC123 or MOM678 will be

More about the permutation and the combination link is given below.
brainly.com/question/11732255
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