858 i believe...
546/7
78 x 4 (compound a)
312 + original compound b (546)
Hope I helped!
Giving me brainliest is much appreciated! =)
Answer:
Sophie has 12.5 cards
Step-by-step explanation:
Let
x -----> number of cards Sophie has
y -----> number of cards Jackie has
we know that
x+y=30 -----> equation A
y=x+5 -----> equation B
Solve by substitution
Substitute equation B in equation A and solve for x
x+(x+5)=30
2x=30-5
x=12.5 cards
Note I assume the problem was invented without taking into account the result, because the amount of cards should be a whole number
<span>Rock, Carbon, Water, Nitrogen</span>
8/20 is greater than 2/10. If you were to make the denominators the same, by mulipling 2x2 and 10x2, you would get 4/20, which is less than 8/20.
Answer:
n=4
Step-by-step explanation:
because 4x10=40