First make the fractions into decimals so it's easier to compare them.
1/2 ⇒ 0.5
2/3 ⇒ 0.66
2/5 ⇒ 0.4
3/4 ⇒ 0.75
Now it's easy to order the numbers from least to greatest.
First order the decimals.
0.4, 0.5, 0.66, 0.75
Now order them with their corresponding fractions.
2/5, 1/2, 2/3, 3/4 is your answer.
You should’ve paid attention so don’t cheat
In multiplying fractions, you don't need a common denominator.
3/8 * 6/1 = 18/8
I multiplied the numerator by the other numerator and multiplied the denominator by the other denominator
Now we have to simplify 18/8, the number 2 can go into both numbers
9/4 is the final answer.
Because angleCBD＋angleBDC＋angleC＝180
so angleCBD＋angleBDC＝180－angleC＝180－82＝98
because BC＝DC
so angleCBD＝angleBDC
so 2 angleCDB＝98
so angleCDB＝49
so y＝29
by Joy Xu，紫馨雪汐
You are correct. You multiply both sides of the second equation by -9 so that the y turns into -9y. That way you add it to the +9y in the first equation to get 0y (the y terms cancel afterward). Nice work.
