Round 38.86 to one decimal place

Answers

Answer 1
Answer: if you round to one decimal place it would be 38.9 because the last number is a biger number that 5 and that makes the number in front go up one number
Answer 2
Answer: 38.9 
Hope this helped :)

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A) dilations always increase the length of line segmentsB) dilations take right angles to right angles

C) dilations of an angle are congruent to the original angle

D) dilations increase the measure of angles

E) dilations of a triangle are congruent to the original triangle

F) dilations dilations of a triangle are similar to the original triangle​

Answers

Answer:

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Step-by-step explanation:

Felipe has saved $625. He is starting a part-time job that pays him $150 a week, and he plans to save all of the money he earns. Which algebraic expression represents Felipe's total savings after x weeks? A.625x + 125 B.775x C.150x + 625 D.125x - 650

Answers

The answer is C, 150x+625
Where x is the number of weeks

Answer:

The correct answer is C. 150x + 625 because x equals the total number of weeks. Hope this helps!

What is the distance between the points (2, 5) and (5, 7)?

Answers

Answer: √(13)\text{ units}

Step-by-step explanation:

The distance formula to calculate distance between two points (a,b) and (c,d) is given by :-

d=√((d-b)^2+(c-a)^2)

Now, the distance between(2, 5) and (5, 7) is given by :-

d=√((7-5)^2+(5-2)^2)\n\n\Rightarrow\ d=√((2)^2+(3)^2)\n\n\Rightarrow\ d=√(13)\text{ units}

Hence, the distance between the points (2, 5) and (5, 7)=√(10)\text{ units}

What is the distance between the points (2, 5) and (5, 7)?

(3, 2)

A football stadium holds 52,000 fans. A college student is doing research and determines that on any given game day, the home team has five times as many fans as the visiting team. In order to help the student in his research, he represents the number of home team tickets as H and the visiting team’s tickets as V.

Answers

If H represents the tome teams tickets and V represents the visiting teams then it would be v+h(5)=52,000. 
V= 8,667 tickets 
H= 43,333 tickets

A car manufacturer is concerned about poor customer satisfaction at one of its dealerships. The management decides to evaluate the satisfaction surveys of its next 69 customers. The dealer will be fined if the number of customers who report favorably is between 40 and 46. The dealership will be dissolved if fewer than 40 customers report favorably. It is known that 73% of the dealer’s customers report favorably on satisfaction surveys. a. What is the probability that the dealer will be fined? (Round "z" value to 2 decimal places, and final answer to 4 decimal places.)b. What is the probability that the dealership will be dissolved? (Round "z" value to 2 decimal places, and final answer to 4 decimal places.)

Answers

Step-by-step explanation:

The probability that the dealer will be fined is 0.0948

To find p(a <= Z <= b) = F(b) - F(a)

P(X < 20) = (20 - 30.5)/3.4489

= -10.5/3.4489 

= -3.0444

= P(Z < -3.0444) from standard normal table

= 0.00117

P(X < 26) = (26 - 30.5)/3.4489

= -4.5/3.4489 = -1.3048

= P(Z < -1.3048) From standard normal table

= 0.09599

P(20 < x < 26) = 0.09599 - 0.00117 = 0.0948

The answer in this question is 0.0948

Final answer:

To determine the probabilities requested, the normal distribution model is employed. The number of favorable reports follows a normal distribution with mean μ = 0.73 * 69 and standard deviation σ. The probabilities are then calculated from the z-scores corresponding to the given ranges, using standard normal distribution tables or calculators.

Explanation:

To calculate the probability that the dealership will be fined or dissolved, we use the normal distribution model because the sample size is large enough, and the variable (the number of customers who report favorably) can be approximated by a normal distribution. Given that 73% of the dealer's customers report favorably, and we have a sample size of 69 customers, we can find the mean (μ) and the standard deviation (σ) of the distribution. The mean (μ) is 0.73 * 69, and the standard deviation (σ) is √((0.73 * 0.27 * 69)).

To find the z-score for the number of favorable reports between 40 and 46, we use the formula z = (x - μ) / σ. Then we find the corresponding probabilities using the standard normal distribution table or a calculator providing such functionalities. To find the probability that the dealer will be fined, we subtract the cumulative probability at the lower boundary from that at the upper boundary. Similarly, to find the probability that the dealership will be dissolved (fewer than 40 favorable reports), we find the cumulative probability at 39 (since it's fewer than 40) and use it directly because it represents all values below that number.

Learn more about Normal Distribution here:

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a 3-inch candle burns down in 12 hours.Assuming the candles are the same thickness and make (that is, directly proportional),how long would it take for a 1-inch candle to burn down?

Answers

Answer: 4 hours

Step-by-step explanation: