Answer:
i think students 3
Step-by-step explanation:
<span><u>70 ounces</u> OR <u>4.375 pounds</u> OR <u>4 pounds and 6 ounces</u></span>
<span><em>[To get this answer, first make pounds into ounces. There are 16 ounces in a pound. Multiply 2 (pounds) and 16 (ounces in a pound) to get 32 ounces of red beads. Next, do the same to the 1 3/4 pounds of green beads: 1 3/4 (pounds) times 16 (ounces in a pound) make 28 ounces. Last add 32 (oz) + 28 (oz) + 10 (oz) together to get the total weight of her supplies: 70 oz OR 4.375 lbs OR 6 oz. It's up to you which answer (they are the same but in different forms) you want to use.]</em>
</span>
Hope I helped! Have a nice day! :)
Answer:
first step to balance the equation is :
multiply AL by 2 to match the amount of aluminum on the other side
balanced equation : 4 Al +3O2 → 2 ALO3
Step-by-step explanation:
Al + O2 → Al2O3
first step to balance the equation is :
multiply AL by 2 to match the amount of aluminum on the other side
but then you have to deal with the amount of O from both sides, we need to find the least common multiple between 2 and 3 which is 6
the best thing to balance the equation is to multiply O2 by 3 and O3 by2, then deal with the amount of AL which is 4 on the other side. last step is to multiply AL by 4 to balance the equation.
0.5(20x - 50y + 36) - 0.25(-100x + 40y - 12)
10x - 25y + 18 + 25x - 10y + 3
35x - 35y + 21
3 hours = 180 minutes.
180 / 30 = 6
22 * 6 = 132
Koby can work about 132 maths problems in 3 hours.
