1) 2 1/3 is also equal to 7/3
4 1/5 is also equal to 21/5
you need to make the denominators the same so you have to find the lowest common multiple, which is 15 since both 5 and 3 can be times by to make 15
you need to also times the numerators by the number you're timesing the denominator by
7/3 x 5 = 35/15
21/5 x 3 = 63/15
now add those together
35/15 + 63/15 = 98/15
now just convert 98/15 back to a mixed fraction
98/15 = 6 8/15
the answer is..
I'll do the others in a different answer!!
Answer:
3 gallons
Step-by-step explanation:
first find how many cups people will eat
24 people × 2 cups = 48 cups
Then divide 48 by 16 (because there are 16 cups in a gallon) to get 3 gallons
I think it's D.
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Answer:
x = [2(y-6)^2]/25
Step-by-step explanation:
y = 6 + 5t
5t = y - 6
t = (y-6)/5
x= 2t^2
x = 2[(y-6)/5]^2 = [2(y-6)^2]/25
6x - 3y = 15.....multiply by 4
7x + 4y = 10....multiply by 3
---------------
24x - 12y = 60 (result of multiplying by 4)
21x + 12y = 30 (result of multiplying by 3)
---------------add
45x = 90
x = 90/45
x = 2
6x - 3y = 15
6(2) - 3y = 15
12 - 3y = 15
-3y = 15 - 12
-3y = 3
y = -3/3
y = -1
solution is (2,-1) <==