Let's begin by calling Sarah's age now as X. As Ralph is 3 times as old as Sarah, X times 3 = 3X. Hence, Ralph's age is 3X. In six years, Ralph will be twice as old as Sarah. To calculate six years from now, add 6 to X for Sarah, and 6 to 3X for Ralph. As Ralph is twice as old as Sarah and we want to find the difference between the ages to calculate X, multiply X+6 by 2. You'll get 2X+12. Therefore, 2X+12=3X+6. Deduct 6 from 3X+6 as we want to isolate the variable. Because you did that to one side, you have to deduct 6 from 2X+12. Hence, now you have 2X+6=3X. X=6. Ralph's age is 3X, so 6 times 3 is 18. Ralph is 18 years old.
First you multiply 1.8m by 1.25m= 2.25m
Second you multiply 2.25 by 100 b/c 100cm in a meter= 225cm
answer:
225cm squared
Those are equivalent take 100 times 1/4 it’s the same as dividing 4 :)
1
7.3
x 9.6
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438
+ 647 0
69. 0 8, hope that helped
