<u>Answer:</u>
For 500 minutes, the costs of the two plans are equal.
<u>Step-by-step explanation:</u>
Let t be the time of calls in minutes; and
c be the cost of the monthly plan.
<u>1st plan:</u>
<u>2nd plan:</u>
Setting the monthly costs equal to each other to get:
when call minutes , then the cost of the plans are:
1st plan:
2nd plan:
Answer:
4 7/20
Step-by-step explanation:
8 1/4 - 3 9/10
get a common denominator of 20
8 1/4 *5/5 - 3 9/10 *2/2
8 5/20 - 3 18/20
borrow 1 from the 8 in the form of 20/20
7 +20/20 + 5/20 - 3 18/20
7 25/20 - 3 18/20
4 7/20
Their combined chance of winning is 20%.
Answer:
Or
Step-by-step explanation:
When x is increased by 40%, then we find 40% of x and add it to x.
We can simplify this to get;
This is the same as:
When we add we obtain: