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meriva
3 years ago
14

Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is a viable solut

ion if x represents the number of days that a library book is late and y represents the total fee?
a. (–3, –0.90)
b. (–2.5, –0.75)
c.(4.5, 1.35)
d. (8, 2.40)
Mathematics
2 answers:
Verizon [17]3 years ago
8 0

Answer:

The correct answer would be (8,2.40).

Step-by-step explanation:

Option one(-3, -0.9) and two (-2.5, -0.75) Would not be a viable solution because the value of number of days can not be negative and in option one and two, value of days -3 and -2.5 is negative.

Option three(4.5, 1.35) can not be correct because library charges fee for a full day so the number for days would be a whole number. Library would not charge for 4.5 days, they would either charge of 4 days or 5 days because 4.5 is not an whole number.

Option four(8, 2.40) is the correct answer because it satisfies our equation;

Y= 0.30 * X

2.40= 0.30 * 8

2.40 = 2.40

hope this helps :)

padilas [110]3 years ago
3 0

D is the right answer

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Step-by-step explanation:

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4 years ago
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Tamiku [17]

Answer:

i can try this!

Step-by-step explanation:

first thing to remember.....

the probability of anything can never be zero!

A - would definitely be very low ...probably less than 1% but not zero

b - would be almost 100%...not quite 100 as we dont know how deep is the water

c - around 50% over a given period

d - 25% over time

e - count the number of people in your class then divide by 100 this is your percentage chance

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5 0
4 years ago
A snake tank measures 1.8 m x 0.5 m x 0.5 m. What is the surface area of the tank including the top? Use the formula: SA = 2hl+2
olganol [36]

Answer:

4.1

Step-by-step explanation:

1.8 x 0.5 = 0.9

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2 x 2.05 = 4.1

Therefore the answer is 4.1

I hope that was helpful!

8 0
3 years ago
A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 ​respondents,
RoseWind [281]

Answer:

The statement that​ "the margin of error was given as \pm5 percentage​ points" means that the population proportion is estimated to be with a certain level of confidence, within the interval \hat{p} \pm 0.05 ; where \hat{p}[tex] is the sample's proportion. The correct answer is C. The statement indicates that the interval [tex]0.14\pm0.05 is likely to contain the true population percentage of people that prefer chocolate pie.

Step-by-step explanation:

The margin of error for proportions is given by the following formula:

z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}

Where:

z_{\alpha /2} is the critical value that corresponds to the confidence level; the confidence level being 1-\alpha,

\hat{p} is the sample's proportion of successes,

n is the size of the sample.

In this exercise we have that \hat{p}=0.14 and that the margin of error is 0.05.

Therefore if we replace in the formula to calculate the confidence interval we get:

\hat{p}\pm 0.05=0.14\pm0.05=(0.09, 0.19)

Which means that the true population proportion is estimated to be, with a certain confidence level, within the interval (0.09, 0.19).

7 0
3 years ago
Check the pic <br> please explain
Nitella [24]

Answer:

Option C

Step-by-step explanation:

From the picture attached,

In ΔABC,

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m∠ACB = z° [Vertically opposite angles]

By triangle sum theorem,

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Option C will be the answer.

3 0
3 years ago
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