Avani has 5 posters she wants to hang on the wall. How many different ways can the posters be arranged in a row?​

Step-by-step explanation:

To determine if a system of two equations with two unknowns has infinite solutions using matrices, you can perform Gaussian elimination or row reduction on the augmented matrix of the system. If the reduced form of the matrix is the identity matrix, then the system has a unique solution. If the reduced form is a row of zeros except for the last column, then the system has no solution. If the reduced form has a row with all zeros except for the last column being non-zero, then the system has an infinite number of solutions.

In other words, the system has infinite solutions if the row reduced form of the augmented matrix has a row of the form [0 0 c], where c is a non-zero scalar. This means that there is a non-trivial solution that satisfies the equation, indicating that there are infinitely many solutions.

Answer:

B) -3                                 (Sorry if its overwhelming)

Explanation:

First, we have the given information of the weather over a 2 and 1/5 span

And we are asked to find the change per hour

We can first start by finding the change for 2 and 1/5 hours:

- Subtract the first amount by the second amount.

= (-6 3/5) - 0

= (-6 3/5) + 0

= -6 3/5

Now that we have the change for 2 and 1/5 hours we must find the change per hour:

- Divide the given dividend by the given divisor

= -6 3/5 ÷ 2 1/5

= -3

Hence, the temperature change per hour over a 2 1/5 hour span is -3° per hour

The temperature change per hour over a 2 1/5 hour span is -3° per hour.

The conversion formula for a temperature that is expressed on the Celsius (°C) scale to its Fahrenheit (°F) ;

°F = (9/5 × °C) + 32.

We can first start by finding the change for 2 and 1/5 hours:

Subtract the first amount by the second amount:

= (-6 3/5) - 0

= (-6 3/5) + 0

= -6 3/5

Divide the given dividend;

= -6 3/5 ÷ 2 1/5

= -3

Hence, the temperature change per hour over a 2 1/5 hour span is -3° per hour.

Learn more about temperature;

https://brainly.com/question/11464844

#SPJ2

The zoo had 85 visitors on Grandparents' Day.

To get the number of visitors that visited in the year, we have to divide the total amount of money earned from ticket sales by the cost of each ticket.

Given that:

Total ticket sales = $768

Cost of each ticket = $9

Number of visitors = Total ticket sales / Cost of each ticket

Number of visitors = $768 / $9

Number of visitors = 85.3333333

Number of visitors = 85.33.

Full question:

Once a year, the zoo hosts Grandparents' Day, where only senior citizens are allowed in the zoo. This year, the zoo sold $768 worth of tickets on Grandparents' Day. How many visitors did the zoo have that day? Assume the ticket cost $9 per person.

Read more about cost

brainly.com/question/839029

#SPJ1

The correct probability is 0.6875

A manager of an apartment store reports that the time of a customer on the second floor must wait for the elevator has a uniform distribution ranging from 0 to 5 minutes. The elevator 30 seconds to go from floor to floor,

It is given that waiting time is uniformly distributed from 0 to 5.

It is given that it takes 30 seconds to go from floor to floor.

Convert 30 seconds into minutes: :  30/60 = 0.5. min

Time to reach first floor is uniformly distributed:

∪(0+0.50, 5 + 0.50)

∪(0.50,5.50)

We need to determine the probability that a hurried customer can reach the first floor in less than 1.25 minutes after pushing the elevator button on the second floor."

So we need to find P(Y < 1.25).

\(P(Y < 1.25)\frac{1.25 - 0.50}{5.50-0.50} = \frac{0.75}{5} =0.15\)

Therefore, the required probability is 0.15.

Learn more about probability here:

https://brainly.com/question/13799968

#SPJ4

The non-extraneous solutions of the square root of the quantity x plus 7 minus 4 equal quantity x plus 3 is: x = -7 and x =-6.

The non-extraneous solution can be found with this calculation:

\(\sqrt{x} + 7 - 4 = x + 3\\\\\sqrt{x} + 7 = x + 7\\\\\)

Now, we will square both sides:

\((x + 7) = (x + 7)^{2} \\\\(x + 7) = (x+7) (x+7)\\\\x + 7 = x^{2} + 14x + 49\\\\x = x^{2} + 13x + 42\\\\0 = (x + 7) (x+6)\\\)

Thus, we have; x = -7 and x = -6

Note that we collected like terms from the figures on the left-hand-side to the figures on the right-hand side. When the lowest common multiple betwen 14 and 42 was checked, figures 7 and 6 were gotten.

When we plug figure x into both equations, we get the same figures and this confirms the solution.

Learn more about non-extraneous solutions here:

https://brainly.com/question/1862498

#SPJ1

Answer:

93%

Step-by-step explanation:

80% = 0.8

65% = 0.65

probability of losing triple jump: 1 - 0.8 = 0.2

probability of losing hurdles: 1 - 0.65 = 0.35

probability of losing both: 0.2 x 0.35 = 0.07

probability of winning at least one: 1 - 0.07 = 0.93 = 93%

Answer:

40 yard

Step-by-step explanation:

Answer:

120 feet

Step-by-step explanation:

8 yards in 2 seconds.

so we need to change the unit of yards into feet bcz all units should be same

now 1 yard=3 feet therefore 8 yards=24 feet

if he runs in 2 seconds =24 feet

   he runs in 1 second =24/2 feet=12 feet

   he runs in 10 seconds=12*10=120 feet

hope it will help.

Answer:

5.5 sq units

Step-by-step explanation:

Find the square around the red shape and subtract out the white parts.

Square = 4x4 = 16

Triangles subtracted -

1x1/2

1x1/2

3x4/2

3x1/2

Total subtracted = -8.5

Squares subtracted

1x1

1x1

Total subtracted = -2

16 - 10.5 = 5.5

Assume the three students will receive a minimum of 250 points overall. Ahmed received x + 5 points and Ayo received x - 3 points, respectively, if Mohammed received x points.

The marks Mohammed received are represented by the variable x, and we use this number to determine the marks Ahmed and Ayo received.

The formula for the three boys' combined marks is: x + (x + 5) + (x - 3) = 250.

Expanding and figuring out x

3x + 2 = 250

3x = 248

x = 82

Therefore, Mohammed received at least 82 points, Ahmed received 87 points, and Ayo received 79 points. If the final score is precisely 250, they might have obtained these minimal marks.

To know more about Variables

https://brainly.com/question/25223322

#SPJ4

Using probability,

a) 61/100

b) 61/210

c) 305/536

The probability formula can be used to calculate the likelihood of an event by simply dividing the favourable number of possibilities by the total number of options.

The likelihood of an event occurring can range from 0 to 1, as there can never be more favourable outcomes than there are potential outcomes. Because of this, the percentage of effective outcomes cannot be 0.

Here in the question,

It has asked to find probability that a randomly selected person did not have a child under 18 years old, given that they said no is:

P = 305/500

= 61/100

It is asked to find probability that a randomly selected person said No, given that the person did not have a child under 18 years old is:

P = 305/1050

= 61/210

It is asked to find probability that a randomly selected person from the group did not have a child under 18 years old and said no is:

P = 305/536

To know more about probability, visit:

https://brainly.com/question/30034780

#SPJ1

Answer:f − 1 ( x ) = x/ 4+3/4

Step-by-step explanation:

We can see that the congruency of the triangle can be under ASA

What is congruency under ASA?

If two triangles meet the ASA (Angle-Side-Angle) condition, they are congruent. Two triangles must satisfy the conditions listed below in order to be congruent under ASA:

Angles in two different triangles are equal to each other by a factor of two.

The side that lies between the two equal angles of one triangle, known as the included side, also appears in the other triangle.

Thus the triangles that have been shown in the image are congruent under ASA.

Learn more about ASA:https://brainly.com/question/29616338

#SPJ1

Answer:

8x - 4x + 12 - 6x - 15 - 6

Combine like terms

-2x - 9

If your equation is equal to zero then continue down.

-2x - 9 = 0

-2x = 9

x = -9/2

  = -4  1/2

Answer:

D-two -fold

Step-by-step explanation:

Yes, the sample size would be large enough if the population is school-aged children and young adults in the United States as this is a simple random sampling.

Simple random sampling is used for randomly selecting the sample size for research. No member in the population has a higher chance in comparison to others for selection in sampling. Every individual has an equal chance to be a part of the sample for the study. This is a type of probability sampling method.

The probability sampling method states that every individual has a fair and equal chance to be selected as a research sample. It includes simple random sampling, stratified sampling, systematic sampling, and cluster sampling. Here the researchers have picked around 150 students and young adults which is an appropriate amount of simple random sample for the study.

Learn more about sampling methods here https://brainly.com/question/17743025

#SPJ4

Answer: 1,781.3

Step-by-step explanation:

h = 7

d = 18

r = 9

V = h x π x r^2

V =7 x π x r^2 = 1781.28

Rounded = 1781.3

In a two-tailed test, the null hypothesis should be rejected when the test value is in either of the two critical regions.

What is a two-tailed test?

A two-tailed test is a statistical test that involves a null hypothesis and an alternative hypothesis. It is also known as a two-sided test. A two-tailed test occurs when the null hypothesis states that there is no significant difference between the population means or variances, while the alternative hypothesis states that there is a significant difference between the two populations.

A two-tailed test has two critical regions, one in the right tail and one in the left tail.

When the test statistic falls into one of these regions, the null hypothesis is rejected. If the test statistic falls in the non-critical region, the null hypothesis is accepted. Therefore, the answer to the question is: Yes, because the test value -3.46 falls in the noncritical region.

A two-tailed test is a statistical hypothesis test in which the alternative hypothesis can take one of two possible forms. Specifically, in a two-tailed test, the alternative hypothesis states that the true value of a population parameter is not equal to a hypothesized value, but does not specify whether it is greater than or less than that value. Instead, it allows for the possibility that the true value could be either higher or lower than the hypothesized value, and therefore examines the statistical significance of deviations in both directions.

To know more about two-tailed test, refer here:

https://brainly.com/question/8170655

#SPJ11

When Samantha was streaming "The Haunted Cave" the cellphone went from a level of battery charge of 76% to 16%. We need to calculate the rate at which the battery of the phone is drained while streaming this show. She watched three episodes of the show, each with 30 minutes. So the first step is to calculate the time she spent streaming it. Since she watched 3 episodes of 30 minutes each, the total time is the product between the number of episodes and the elapsed time.

Then we need to calculate how much of the battery was spent on that time. This is the difference between the charge when she started and the charge when she finished.

Now we can calculate the rate at which her battery is drained while watching that show, this is done by dividing the total battery spent by the elapsed time.

This rate means that for every minute watching this show she spends 2/3 of a % of battery.

She then charged the battery to 63% and went on a 24 minute bus ride while listening to Top Pop, this resulted on her battery dropping all the way to 59%. We need to do the same as above to find how much batter per minute this playlist consumes. We have:

The playlist spent 4% in 24 minutes, so the rate is:

While listening to Top Pop the cellphone discharges at a rate of 1/6 of a % per minute.

When she was on the bus home with her friend her battery was at a level of 29%, while his was at 55%. He then went to watch the haunted show, while she went to listen Play Top. If the rate is the same as we calculated above, then the level of battery of each person can be calculated by the starting level subtracted by the rate at which each app consumes the battery multiplied by the time they are using the app. So for each person we have:

To find the time it will take before the level of battery is the same on each device we need to make both equations equal and solve for t.

For both phones to achieve the same level of battery they'll need to use it for 78 minutes.

Answer:

student a

Step-by-step explanation:

i just took the exam

Answer:

100% Sure its b

Step-by-step explanation:

Answer:

B.)y = 1.50x + .75

Step-by-step explanation:

Answer:

x = 1

Step-by-step explanation:

...................

Answer:

1

Step-by-step explanation:

Step 1:

3x + 11 = 5x + 9     Sum of a line

Step 2:

11 = 2x + 9      Subtract 3x on both sides

Step 3:

2 = 2x      Subtract 9 on both sides

Answer:

x = 1        Divide

Hope This Helps :)

Answer:

x = 107 , y = 60

Step-by-step explanation:

Each lower base angle is supplementary to the upper base angle on the same side, then

x + 73 = 180 ( subtract 73 from both sides )

x = 107

and

y + 2y = 180

3y = 180 ( divide both sides by 3 )

y = 60

Therefore , the solution of the given problem of parallelograms comes out to be NM and OL both equal 37.

In Euclidean mathematics, a parallelogram is actually a simple hexagon with two distinct groups and equal distances. A specific kind of quadrilateral called a parallelogram is formed when both sets of sides equally share a horizontal path. Parallelograms come in four different varieties, three of which are mutually exclusive.

Here,

Since LMNO is a parallelogram, we know that the lengths of the opposing sides are identical. Therefore, we can equalize the NM and OL formulas, then solve for x:

=> OL = 4x + 9 and

=>  NM = x + 30

=>  OL = x + 30

=> 4x + 9 = NM

=>  3x = 21

=>  x = 7

We have thus established that x = 7. In order to discover the values for NM and OL, we can put this value back into the expressions for those variables:

=> NM = x + 30 = 7 + 30 = 37

=>  OL = 4x + 9 = 4(7) + 9 = 37

As a result, NM and OL both equal 37.

To know more about parallelograms visit:

https://brainly.com/question/29147156

#SPJ1

Answer:

A. 7,6,14

Step-by-step explanation:

Rules for side lengths of triangle.

1. Any side should be less then the sum of the other two angles.

2. The same side should be greater than the subtraction of the other side lengths(bigger side - smaller side)

A.

7 < 6+14 .  Correct

7> 14-6 .     Incorrect

This cannot be a solution (impossible)

B.

4<4+4 .  Correct

4>4-4 .  correct

This is a solution (equilateral triangle)

C.

6<6+2 .  Correct

6>6-2 .  Correct

This is a solution (isosceles triangle)

D.

7<8+13 . Correct

7>13-8 . Correct

This is a solution (scalene triangle)

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

A. y= -3x - 1

that's the answer of you substitute the figures in x into where x can be located in A

Answer:

The maximum point should be at (-1,6), the y-intercept should be at (0, 5.625), and the x-intercept should be at (-5,0). You call plot the maximum point and y-intercept or the maximum point and x-intercept.

Step-by-step explanation: