Grouping method works best on this one:
<span>ab+a+4+4b=a<span>(b+1)</span>+4<span>(b+1)</span></span>
<span>=<span>(a+4)</span><span>(b+1<span>)
</span></span></span>
Answer:
<u>30 pesos</u>
Step-by-step explanation:
<u>Given</u>
- Had 200 pesos originally
- spends 'y' pesos on a notebook
- Bought 4 colored pens with the rest of the money
<u>Solving</u>
- Let money of the pen = x, money of notebook = y
- 4x + y = 200
- 4x + 80 = 200
- 4x = 120
- x = <u>30 pesos</u>
Answer:
choosing 1 red marble
choosing 1 white marble, replacing it, and choosing another white marble
choosing 1 white marble
Step-by-step explanation:
red marble has a 30 percent chance
1 white marble and then replacing and another white marble is 25% chance
1 white marble is 50% chance
Answer:
5 11/13 km
Step-by-step explanation:
4 ( 1 6/13)
4× 19/13
= 5 11/13
I^75= i^18x4+3= i^3
i^2^1= i^2= 1.
-1 x i= -i
