I need the right answers pls and tysmmm

Answers

Answer 1

Answer:

Answer:

It's 21, you are correct!!

Step-by-step explanation:

Related Questions

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2(3x+1)=-10 pls help
Is the percent increase from 50 to 70 equal to the percent from 70 to 50explain.
What is the slope of the line described by the equation below?y= 10x + 2A. -10B. 10C. 2O D. -2
Todd and Garrett began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Todd took a test in Math and earned a 74.6, and Garrett took a test in English and earned a 68.8. Use the fact that all the students' test grades in the Math class had a mean of 70.6 and a standard deviation of 11.9, and all the students' test grades in English had a mean of 63.7 and a standard deviation of 8.6 to answer the following questions. Required:a. Calculate the z-score for Todd's test grade.b. Calculate the z-score for lan's test grade.c. Which person did relatively better?

Samantha is training for a race. The distances of her training runs form an arithmetic sequence. She runs 1 mi the first day and 2 mi the seventh day.a. What is the explicit definition for this sequence?

b. How far does she run on day 19?

Answers

B Because how far does she runs on day 19

Is the quotient of two rational numbers always a rational number? Explain.

Answers

The Quotient of two Rational Numbers is a Rational Number if and only if Numerator and Denominator are Multiples.

From Algebra, we know that a Rational Number is a Real Number of the form:

$x = (a)/(b)$ , $a, b\in \mathbb{N}$ , $x \in \mathbb{R}$ (1)

Where:

$a$ - Numerator.
$b$ - Denominator.
$x$ - Quotient.

The Quotient can be an Integer or not. In the first case, all Quotients have their equivalent Rational Numbers.

Now, if we divide a Rational Number by another Rational Number, then we have the following expression:

$x' = (x_(1))/(x_(2))$

If $x'$ is a Rational Number, then it must also an Integer and if $x'$ is an Integer, then $x_(1)$ and $x_(2)$ must be Multiples of each other.

The Quotient of two Rational Numbers is a Rational Number if and only if Numerator and Denominator are Multiples.

Please see this question related to Rational Numbers: brainly.com/question/24398433

Answer:

Yes,

Step-by-step explananation

The quotient of two rational numbers is always rational, and the reason for this lies in the fact that the product of two integers is always an rational number.

What is 6/12 = 12/ blank

Answers

Answer: 12/24

Step-by-step explanation: 6/12 = 1/2 = 12/24

12/24 they are both half

An automobile manufacturer would like to know what proportion of its customers are dissatisfied with the service received from their local dealer. The customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion that are dissatisfied. From past studies, they believe that this proportion will be about 0.28. Find the sample size needed if the margin of error of the confidence interval is to be no more than 0.02. (Round your answer up to the nearest whole number.)

Answers

Answer:

The sample size needed if the margin of error of the confidence interval is to be no more than 0.02.

n= 2015

Step-by-step explanation:

Given the customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion that are dissatisfied

Given data from past studies, they believe that this proportion will be about 0.28

The proportion of success(p) = 0.28

We know that the margin of error of 95% of intervals of given proportion

margin of error = $(2√(p(1-p) )/(√(n) )$ …(i)