If you do the proportion, you have to put 1/5 = 20/100. The 20 represents the percentage. Then you have to say to yourself that how many time 5 goes to 100, well its x20 then if we multiply 1 x 20 we'll get 20. So, he is correct, 1/5 = 20%. Remember what number we think of when we hear the word percent, the number is 100.
Answer:
B= 22, A=154
Step-by-step explanation:
our equation is 7B+B=176, when you solve that you get B=22, multipy B by 7 and you get the value of A, 154
Answer:
10
Step-by-step explanation:
14+14+18+18+22=86
6*16=96
96-86=10
Answer:
Step-by-step explanation:
The first thing that I noticed was that all of the terms had a common factor of 
. You can therefore factor that out first:
Now, you have a quadratic equation inside the parentheses. Factoring, you find that the roots are -0.2 and 3, meaning that you can further factor this expression to be:
Hope this helps!
