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omeli [17]
3 years ago
6

Derek had a bill of $29 last month on he Call-a-Lot Plan. How many minutes did he use?

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
7 0
It depends on how much it costed per minute if it was a dollar a minute then it would be 29 minutes
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Stanley drives m miles in x hours. how many hours would he save if he drove the same distance at k miles per hour?
fenix001 [56]
<span>The time saved will be: x - m/k This is a simple exercise in manipulating symbols. Let's take a look at the problem and break it down. "Stanley drives m miles in x hours" This statement immediately gives us 2 variables; "m" to represent how many miles the trip is and "x" for the number of hours it took Stanley to drive that far. Now let's look at the next statement. "How many hours would he save if he drove the same distance at k miles per hour?" This statement gives us another variable "k" for a new speed and gives us the question to answer. How many hours would Stanley save if he made the trip at a different speed. Since we're interested in hours saved, we need 2 different time values. They are 1. How much time did Stanley originally take? 2. How much time will the new speed make Stanley take? Looking at m, x, and k. We can immediately see that x is the original time that Stanley took. So we have that value. But we don't have any value for how long will it take at a new speed. But can we calculate it? And the answer to that is YES. The time it will take is the distance divided by the new speed. And that would be m/k. And since we're looking for savings, we just need to subtract the two time values. So our equation becomes x - m/k where x = original time taken m = distance of trip k = new speed to drive at</span>
8 0
4 years ago
What is the horizontal difference between (4, 8) and (-2, 2)?
Stolb23 [73]

Answer:

6 units

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4 0
3 years ago
An ongoing promotion at a department store gives customers 20% off the portion of their bill that is over $100. Ruby's total bil
BigorU [14]

Answer:

The correct option is:

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Step-by-step explanation:

We are given that:

We know that a department store gives 20 % off the portion of the bill that is over 100 dollars.

Total bill is 250 and x is the amount of money she would have spent without the promotion.

The cost to which the discount applies is 0.8 ( x - 100 ).

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4 years ago
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Doss [256]
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maw [93]

9/20 is the probability that Bob's password consists of an odd single-digit number followed by a letter and a positive single-digit number

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P (odd single digit number )  =  ( 5 odd single digits / 10 non-negative single digits)  = (5/10)  = 1/2

P (positive single digit number ) =  (9 positive single digits / 10 non-negative single digits)  = 9/10

The total probability is   (1/2) (9/10)  =  9/20

Learn more about word problems here: brainly.com/question/21405634

#SPJ4

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