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Cloud [144]
3 years ago
6

Two cell phone companies charge a flat fee plus an added cost for each minute or part of a minute used. The cost is represented

by C and the number of minutes is represented by t.
Call-More: C = 0.40t + 25 Talk-Now: C = 0.15t + 40
Mathematics
1 answer:
Ber [7]3 years ago
4 0

Answer:

The call more is cheaper than talk-now.

Step-by-step explanation:

The companies charge a flat fee plus an added cost for each minute or part of a minute used for two companies are as follows :

Call-More: C = 0.40t + 25 Talk-Now: C = 0.15t + 40

We need to find which company is cheaper if a customer talks for 50 minutes.

For call more,

C = 0.40(50) + 25 = 45 units

For talk-now,

C = 0.15(50) + 40 = 47.5 units

So, it can be seen that call more is cheaper than talk-now.

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Kwasi bought `15` postage stamps for `\$8.25`. All stamps cost the same amount. How many stamps can Kwasi purchase with $22
Debora [2.8K]

The number of stamps and the cost are illustrations of unit rates

40 stamps would cost $22

The cost of 15 postage stamps is $8.25

Start by calculating the unit rate of the stamps.

Unit = \frac{8.25}{15}

Unit = 0.55

So, the number of stamps for $22 is calculated by dividing $22 by the unit rate.

So, we have:

Number=\frac{22}{0.55}

Number=40

Hence, 40 stamps would cost $22

Read more about unit rates at:

brainly.com/question/396443

7 0
2 years ago
A local veterinary clinic typically sees 15% of its horses presenting with West Nile virus. If 10 horses are admitted during Jul
NemiM [27]

Answer: D. 0.8202

Step-by-step explanation:

We would assume a binomial distribution for the number of horses presenting with West Nile virus. The formula is expressed as

P(x = r) = nCr × p^r × q^(n - r)

Where

x represent the number of successes.

p represents the probability of success.

q = (1 - p) represents the probability of failure.

n represents the number of trials or sample.

From the information given,

p = 15% = 15/100 = 0.15

q = 1 - p = 1 - 0.15

q = 0.85

n = 10

Therefore,

P(x ≤ 2) = P(x = 0) + P(x = 1) + P(x = 2)

P(x = 0) = 10C0 × 0.15^0 × 0.85^(10 - 0) = 0.1969

P(x = 1) = 10C1 × 0.15^1 × 0.85^(10 - 1) = 0.3474

P(x = 2) = 10C2 × 0.15^2 × 0.85^(10 - 2) = 0.2759

P(x ≤ 2) = 0.1969 + 0.3474 + 0.2759

= 0.8202

6 0
3 years ago
11. A spinner is divided into 12 equal sections. Five of the sections are labeled with
Licemer1 [7]

Answer:

Probability of spinning an odd number = 1/3

Step-by-step explanation:

4 odd out of 12 sections

Probability of spinning an odd number = 4/12 = 1/3

7 0
3 years ago
A bag contains 10
Nutka1998 [239]
The answer is (5/10)*(4/9)=20/90= 2/9

because there are 5 red marbles out of a total of ten. if you take one out then there are 4 red marbles out of a total of 9. The probability of these events being in succession is the product of their probabilities.

any questions?
3 0
3 years ago
3. You want to leave a tip for a meal that
Rasek [7]

Answer:

17%

Step-by-step explanation:

3/17.95 = 0.167

0.167 × 100 = 16.7 *rounding to 17

12.95 × 0.17 = 3.0515

5 0
4 years ago
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