Answer:
Step-by-step explanation:
LCM:
10: 0,10,20,30,40,50
4: 0,4,8,12,16,20
ANSWER IS 20
LCM:
10: see above numbers
6: 0,6,12,18,24,30
ANSWER IS 30
So, 10 and 8 would be 40
Plug into calculator...
solve(2(-y+1)-3y=-30,y)
y=6.4
Answer:
D.
Step-by-step explanation:
the distance left is subtracting the first mixed number by the second one. But u would have to find their common denominators. To do this u multiply the first fraction by 5/5 (b/c the second fraction has a denominator of 5), and vise versa. The results should equal to D.
Answer:
420
Step-by-step explanation:
The number of students in the school is unknown, so we'll call it x.
55% of the number of students are girls.
There are 321 girls.
55% of x = 231
0.55x = 231
x = 231/0.55
x = 420
Answer: 420
