Answer:
70
Step-by-step explanation:
The simplest way to find the number is work backwards. If you know the final answer is 10, start with 10 and make the number x. Then set up the original equation.
0.5x-25=10
Then start working backwards(isolate).
0.5x-25=10
+25 +25
in other words, 10+25=0.5x. (the 25 cancels out because -25+25=0)
10+25=35, so 35=0.5x.
Now, instead of dividing by 2, multiply by 2(opposite again).
35=0.5x
/0.5(aka *2) /0.5(cancels out)
now you are left with 70=x, so the number is 70.
Answer: its A or b but i think A
Step-by-step explanation:
A. M=16x
B. T=20x+480
C. 580=20x+480
100=20x
x=5
<span>To regroup, you simply break up the bigger numbers into smaller numbers that are more easily added together. We often regroup into numbers that end with 0 because they're easier to add. For example, you can break up 64 into 60 + 4 and 43 into 40 + 3. This will make addition easier, because you can first add together 60 and 40, which will equal 100. Then, you can add the smaller digits: 100 + 4 + 3 = 107.</span>