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Helping my daughter with homework need help please?
Question is (fraction) 4/9 X ? = 1 1/3 Then Next Question is ? X 2.25 = 90. i think that you divide the last question and that answer would be 40. But having problems with the fraction. Even if you help with the steps to solve it would be great. how to do it. Thanks
6 Answers
- Jun AgrudaLv 71 decade agoFavorite Answer
49x = 1 1/3
49x = 4/3
x = (4/3)/49
x = 4/147
Answer: x = 4/147
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2 1/4x = 90
9/4x = 90
x = 90(4/9)
x = 360/9 or 40
Answer: x = 40
- 1 decade ago
First question: Make it so that the 1/3s become X/9s.
1 1/3 is actually 1 3/9, so 9/9 + 3/9 = 12/9.
4/9 X ? = 12/9. Answer is 3 because 4 X 3 = 12.
You have it right for the last question. You divide 90 by 2 1/4.
Source(s): Mom's a Math teacher. - 1 decade ago
40 is the correct answer :) you do the same thing on the first one, 1 1/3 divided by 4/9 (same as 4/3 divided by 4/9, same as 4/3 times 9/4) so the answer is 36/12 or 3.
- 1 decade ago
1) first i would give both the fractions the same denominator, so 4/9 stays, but 1 1/3 turns into 12/9. then you have to isolate the variable by taking the opposite opperation of multiplication. so just divide 12/9 by 4/9, and x=3.
2)again, isolate the variable by dividing both sides by 2.25. x=40
Source(s): my beastly math skills ;] - How do you think about the answers? You can sign in to vote the answer.
- 1 decade ago
4 x = 4
_ _
9 3
4/3 = 12/9 mulltiply by recprocal both sides
4/9x * 9/4 = 12/9 *9/4
x= 108/36 reduce
x= 54/18
x =27/9
x= 3
