Answer:
1:2
Step-by-step explanation:
Let's say there are x males and y females in the class.
The sum of all male weights will be 72x, and the sum of all female weights will be 60y.
If we get a class mean weight, we have:
(72x + 60y) / (x+y) = 68
72x + 60y = 68x + 68y
4x = 8y
y / x = 4/8 = 1/2
So the ratio of females to males is the class is 1:2
Answer:
3y - 5
Step-by-step explanation:
We combine like terms. The y terms are 10y, -8y and y which combine to 3y. Think of it like having 10 items, take away 8 items but then add on 1 more. So we'd have 10-8+1 = 2+1 = 3 items overall. Replace "Items" with y and we have 10y-8y+1y = (10-8+1)y = 3y
The other terms are constant terms as they dont have any variables attached to them. These terms are -3, 4 and -6 which combine to -3+4-6 = 1-6 = -5
In summary, the y terms combine to 3y while the constant terms combine to -5. Put together, the fully simplified answer is 3y-5
Answer:
yes, fractions are like 1/2 or 3/6 but a whole number is not a part or a fraction such as 124.
Step-by-step explanation:
Answer:
$297.50
Step-by-step explanation:
If she earns 105 for three hours, she would be earning $35 an hour.
105/3=35
If she works 8.5 hours, to find the amount you would multiply the hourly rate ($35) by 8.5. So, the answer is
8.5x35=$297.50
Answer:
Step-by-step explanation:
can be simplified to:
Make them have common denominators so:
Simplify:
I don't think you can simplify that fraction further so that's the answer.
