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Sphinxa [80]
3 years ago
9

In a survey of 2,800 people who owned a certain type of​ car, 560 said they would buy that type of car again. What percent of th

e people surveyed were satisfied with the​ car?
Mathematics
1 answer:
STALIN [3.7K]3 years ago
3 0

20% people were satisfied with the car

Step-by-step explanation:

Percentage of a certain quanitity is calculated by using the following formula

Percentage=\frac{Quantity}{Total}*100

Given

Total people surveyed = 2800

People satisfied with the car = 560

So,

Percentage= \frac{560}{2800}*100\\=0.2*100\\=20\%

Hence,

20% people were satisfied with the car

Keywords: Percentage

Learn more about percentage at:

  • brainly.com/question/4034547
  • brainly.com/question/4054269

#LearnwithBrainly

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Suppose there are 310 first-year lawyers in a particular metropolitan area with an average starting salary of $156,000 and a sta
vlada-n [284]

Answer:

$ 2263

Step-by-step explanation:

In this case to calculate the standard error of the mean, we only need the standard deviation (sd) and the number of the random sample (n).

sd = 13000

n = 33

SE = sd / (n ^ (1/2))

replacing:

SE = 13000 / (33 ^ (1/2))

SE = 2263.01

What the standard error of the mean for a random sample of 33 first-year lawyers means is $ 2263

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3 years ago
The smiths bill at a restaurant is $85 how much money should Mr. Smith leave as a tip if he plans to tip 20%
Ivenika [448]

Answer:

102.00

Step-by-step explanation:

If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip. If you want to leave a 18% tip, multiply the cost by 0.18 to get the tip amount or multiply the cost by 1.18 to get the total including tip.

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What is the area of the square?<br> 2 m<br> square meters
Mariulka [41]

Answer:

4m

Step-by-step explanation:

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2 years ago
Consider the differential equationy′′+3y′−10y=0.(a) Find the general solution to this differential equation.(b) Now solve the in
RSB [31]

Answer:

Y= 2e^(5t)

Step-by-step explanation:

Taking Laplace of the given differential equation:

s^2+3s-10=0

s^2+5s-2s-10=0

s(s+5)-2(s+5) =0

(s-2) (s+5) =0

s=2, s=-5

Hence, the general solution will be:

Y=Ae^(-2t)+ Be^(5t)………………………………(D)

Put t = 0 in equation (D)

Y (0) =A+B

2 =A+B……………………………………… (i)

Now take derivative of (D) with respect to "t", we get:

Y=-2Ae^(-2t)+5Be^(5t)   ....................... (E)

Put t = 0 in equation (E) we get:

Y’ (0) = -2A+5B

10  = -2A+5B ……………………………………(ii)

2(i) + (ii) =>

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A=0

By putting the values of A and B in equation (D)

Y= 2e^(5t)

6 0
3 years ago
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