MATHEMATICS COLLEGE

Choose the correct algebraic expression for each phrase 13 times the cost of one ticketPLS HELP IF U KNOW THE ANSWER
t÷13
t-13
13+t
13t​

Answers

Answer 1
Answer:

Answer:

13t

Step-by-step explanation:
Answer 2
Answer: Answer: 13t
You multiply 13 by the cost of a ticket

Related Questions

Which of the below is the quotient for the expression 1/5 divided by 4?A) 1/5B) 4/5C) 1/20D) 20
4.1 Unit RatesFind each unit rate. Round to the nearest hundredth, if nece1. $140 for 18 ft?
the area of the triangle is 2/5 square foot the height is 6/5 ft. what is the length in feet of the base of the triangle?
When hired at a new job selling jewelry, you are given two pay options:Option A: Base salary of $16,000 a year, with a commission of 7% of your sales Option B: Base salary of $25,000 a year, with a commission of 2% of your sales In order for option A to produce a larger income, you would need sell at least $_______ of jewelry each year
Sean and Leah are playing a computer game. Sean scored 72,491 points. Leah scored 19,326 points more than Sean. How many point did Leah score?

Determine the equivalent system for the given system of equations.4x − 5y = 2
3x − y = 8

4x − 5y = 2
13x − 8y = 4
4x − 5y = 2
10x + 3y = 15
4x − 5y = 2
13x − 8y = 26
4x − 5y = 2
7x + 6y = 10

Answers

Answer:

4x − 5y = 2

13x − 8y = 26

Step-by-step explanation:

The equivalent system must have the same solution as the given system of equations:

4x − 5y = 2

3x − y = 8

Here we have that:

y = 3x - 8

4x - 5y = 2

4x - 5(3x - 8) = 2

4x - 15x + 40 = 2

-11x = -38

x = (38)/(11)

y = 3x - 8 = (3*38)/(11) - (88)/(11) = (26)/(11)

Now, we have to verify which of these systems have this answer:

4x − 5y = 2

13x − 8y = 4

13x - 8y = 4

13(38)/(11) - 8(26)/(11) = (286)/(11) \neq 4

4x − 5y = 2

10x + 3y = 15

10x + 3y = 15

10(38)/(11) + 3(26)/(11) = (458)/(11) \neq 15

4x − 5y = 2

13x − 8y = 26

4x - 5y = 2

4(38)/(11) - 5(26)/(11) = (22)/(11) = 2

13x - 8y = 26

13(38)/(11) - 8(26)/(11) = (286)/(11) = 26

This is the correct answer

So this is the correct answer

4x − 5y = 2

7x + 6y = 10

Answer:

The answer is

(4x - 5y = 2) and (13x - 8y =26)

Divide and simplify to the form a+bi. 5+6i 5+6i 6+ i (Simplify your answer. Type an integer or a fraction. Type your answer in the form a+bi.)

Answers

Answer:

-(6)/(37) + (371)/(37)i

Step-by-step explanation:

We need to evaluate ((5+6i)(5+6i))/(6+i)

(5+6i)(5+6i) = (25 + 36i² + 60i) = (25 - 36 + 60i) = -11 + 60i

= (-11+60i)/(6+i)

Now we rationalize the denominator.

Now, multiplying both the numerator and denominator by (6-i)

(-66 + 11i + 360i - 60i^2)/(36 - i^2) = (-66 + 60  + 371i)/(37) = (-6 + 371i)/(37)

= -(6)/(37) + (371)/(37)i

Formula used:

(a+b)² = a² + b² + 2ab

i² = -1

Find the value of x in the triangle shown below.

Answers

Answer:

x=8

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2+b^2 = c^2  where a and b are the legs and c is the hypotenuse

6^2 + x^2 = 10^2

36 + x^2 = 100

Subtract 36 from each side

36-36 +x^2 = 100-36

x^2 = 64

Take the square root of each side

sqrt(x^2) = sqrt(64)

x = 8

Answer:

x = 8

Step-by-step explanation:

According to Pythagorean Theorem

AB {}^(2) + BC {}^(2) = AC {}^(2)

here

AB = x \n BC = 6 \n AC = 10

Now,

{x}^(2) + {6}^(2) = 10 {}^(2) \n {x}^(2) = {10}^(2) - {6}^(2) \n x {}^(2) = 100 - 36 \n {x}^(2) = 64 \n x = √(64) \n x = 8

AB =x =8

A tortoise walks 3 inches in 1 second. How many feet per second can the tortoise walk? To answer the question, you need to write a conversion factor to convert: The correct conversion factor has the inches in the: The correct conversion factor has the feet in the: . The tortoise can walk feet per second:

Answers

Answer:

A tortoise walks 3 inches in 1 second. How many feet per second can the tortoise walk?

To answer the question, you need to write a conversion factor to convert  

inches to feet

The correct conversion factor has the inches in the  

denominator

The correct conversion factor has the feet in the  

numerator

.

The tortoise can walk  

0.25

feet per second.

by-step explanation:

hope this helps :)

Answer:

The tortoise can walk 0.25 feet per second.

Step-by-step explanation:

Convert inches to feet

Jack has a summer job caddying at a golf course. Jack earns $120a week. By rounding his weekly income to the nearest hundred
dollars, find a reasonable estimate for his total income during the
12 week summer.

A) $700
B) $800
C) $1200
D) $1700

Answers

1200 as you would round it down to 100 a week so you would do 100x12

"The municipal transportation authority determined that 58% of all drivers were speeding along a busy street. In an attempt to reduce this percentage, the city put up electronic speed monitors so that drivers would be warned if they were driving over the speed limit. A follow-up study is now planned to see if the speed monitors were effective. The null and alternative hypotheses of the test are H0 : π = 0.58 versus Ha : π < 0.58. It is planned to use a sample of 150 drivers taken at random times of the week and the test will be conducted at the 5% significance level. (a) What is the most number of drivers in the sample that can be speeding and still have them conclude that the alternative hypothesis is true? (b) Suppose the true value of π is 0.52. What is the power of the test? (c) How could the researchers modify the test in order to increase its power without increasing the probability of a Type I Error?"

Answers

Answer:

a) X=77 drivers

b) Power of the test = 0.404

c) Increasing the sample size.

Step-by-step explanation:

This is a hypothesis test of proportions. As the claim is that the speed monitors were effective in reducing the speeding, this is a left-tail test.

For a left-tail test at a 5% significance level, we have a critical value of z that is zc=-1.645. This value is the limit of the rejection region. That means that if the test statistic z is smaller than zc=-1.645, the null hypothesis is rejected.

The proportion that would have a test statistic equal to this critical value can be expressed as:

p_c=\pi+z_c\cdot\sigma_p

The standard error of the proportion is:

\sigma_p=\sqrt{(\pi(1-\pi))/(n)}=\sqrt{(0.58*0.42)/(150)}\n\n\n \sigma_p=√(0.001624)=0.04

Then, the proportion is:

p_c=\pi+z_c\cdot\sigma_p=0.58-1.645*0.04=0.58-0.0658=0.5142

This proportion, with a sample size of n=150, correspond to

x=n\cdot p=150\cdot0.5142=77.13\approx 77

The power of the test is the probability of correctly rejecting the null hypothesis.

The true proportion is 0.52, but we don't know at the time of the test, so the critical value to make a decision about rejecting the null hypothesis is still zc=-1.645 corresponding to a critical proportion of 0.51.

Then, we can say that the probability of rejecting the null hypothesis is still the probability of getting a sample of size n=150 with a proportion of 0.51 or smaller, but within a population with a proportion of 0.52.

The standard error has to be re-calculated for the new true proportion:

\sigma_p=\sqrt{(\pi(1-\pi))/(n)}=\sqrt{(0.52*0.48)/(150)}\n\n\n \sigma_p=√(0.001664)=0.041

Then, we calculate the z-value for this proportion with the true proportion:

z=(p-\pi')/(\sigma_p)=(0.51-0.52)/(0.041)=(-0.01)/(0.041)=-0.244

The probability of getting a sample of size n=150 with a proportion of 0.51 or lower is:

P(p<0.51)=P(z<-0.244)=0.404

Then, the power of the test is β=0.404.

The only variable left to change in the test in order to increase the power of the test is the sample size, as the significance level can not be changed (it is related to the probability of a Type I error).

It the sample size is increased, the standard error of the proprotion decreases. As the standard error tends to zero, the critical proportion tend to 0.58, as we can see in its equation:

\lim_(\sigma_p \to 0) p_c=\pi+ \lim_(\sigma_p \to 0)(z_c\cdot\sigma_p)=\pi=0.58

Then, if the critical proportion increases, the z-score increases, and also the probability of rejecting the null hypothesis.
Other Questions
What is 1 divided by a negative number with negative exponent: 1/-4^-5
Question 3 (1 point) If the following is a rhombus, find the missing measures. Find PQ. PQ=​
The following data set represents the ACT scores for students in Mrs. Smith's collegescience class.18 32 16 2319 21 28 2922 30 19 21What is the range for the ACT scores for the class?
What is the measure of