A telephone company charges initially $0.50 and then $0.11 for every minute. Write an expression that gives the cost of a call that lasts N minutes
The scale of a map is lcm to 15cm. What is the distance on land if the length from the P to point Q on the map is 30cm
To find the distance on land given the scale of the map, we can set up a proportion.
The scale of the map is lcm to 15cm, which can be written as:
1cm on the map represents lcm on land.
Let's represent the distance on land as "x" (in cm). According to the proportion:
1cm / lcm = 30cm / x
Cross-multiplying gives us:
x = (lcm * 30) / 1
Since lcm is not specified in the question, we cannot determine the exact distance on land without knowing the value of lcm.
The expression that gives the cost of a call that lasts N minutes is:
0.50 + 0.11N
Charles has some money in his pocket. He decided to count it up to see how much he has. He has a two hundred pounds notes, three fifty pounds notes, seven five pounds notes and six one pounds coins. How much dose he have?
To calculate how much money Charles has, we need to multiply the number of each type of note or coin by their respective value and then add up all the values.
The value of a two hundred pounds note is £200, so multiplying the number of two hundred pounds notes by their value gives us: 2 x £200 = £400.
The value of a fifty pounds note is £50, so multiplying the number of fifty pounds notes by their value gives us: 3 x £50 = £150.
The value of a five pounds note is £5, so multiplying the number of five pounds notes by their value gives us: 7 x £5 = £35.
The value of a one pound coin is £1, so multiplying the number of one pound coins by their value gives us: 6 x £1 = £6.
Adding up all the values, Charles has:
£400 + £150 + £35 + £6 = £591
Therefore, Charles has £591.