Which of the following describes a positive correlation? As the number of hours spent on homework increases, the tests scores increase. As the number of times going to bed early increases, the number of times waking up late decreases. As the number of apples eaten per year increases, the number of times visiting the doctor every year remains the same. The amount of time a team spent practicing increases, the number of games lost in a season decreases.

Answer:

11 must be the fee for each delivery made

Step-by-step explanation:

p = 11d − 55

The y deduct the daily fee

deduct means subtract which means the daily fee is 55

d is the number of deliveries in one day

delivery company pays its drivers a fixed fee for each delivery made

Since d is the number of delivers, 11 must be the fee for each delivery made

Answer:

fee paid per delivery

Step-by-step explanation:

Answer:

x+20

Step-by-step explanation:

As we can see n the diagram, there are parallel traversals and one line, and the two angles given are same-side interior angles. We know that when there is parallel traversal, and we have same side interiors, the sum of the measure of the two angles are supplementary. Supplementary means 180 degrees, or a straight line.

So we plug everything in and we have  4x+5x=180 degrees

4x+5x=9x, so 9x=180

We divide by 9 on both sides to get the value of x, which is 20

Hope it helps!

Answer: B (x,y) --> (x + 4, y - 2)

Step-by-step explanation: When you add -5+4=-1, and when you subtract 2 from 4 it equals to 2, which gives you the second coordinates, this means that x+4 and y-2 is the answer.

Answer: C

Step-by-step explanation:

The points of intersection of Carl’s graph have the same x-coordinates as the points of intersection of Shelly’s graph but different y-coordinates.

Trigonometric expressions can be represented using inequalities

The true statement is (c) the points of intersection of Carl’s graph have the same x-coordinates as the points of intersection of Shelly’s graph but different y-coordinates.

The inequality is given as:

[tex]\mathbf{sin^3(x) < -0.85}[/tex]

The steps Carl took will give the following coordinates (x, y^3)

The steps Shelly took will give the following coordinates (x, y)

This means that, their results will have the same x-coordinates but different y-coordinates.

Hence, the true option is (c)

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Answer:

The answer is polar.

Step-by-step explanation:

I just finished the quiz

Answer:

My best choice would be e

Step-by-step explanation:

The given example is of double blind study.

The correct option is (e).

A type of clinical trial in which neither the participants nor the researcher knows which treatment or intervention participants are receiving until the clinical trial is over. This makes results of the study less likely to be biased. This means that the results are less likely to be affected by factors that are not related to the treatment or intervention being tested.

Given,

Two medicines A and B.

Both are without label, neither the doctor knows nor the patient can identify the pills.

As per definition above, It is an example of double blind study .

Hence, option (e) is correct.

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Cost of your guitar = $ 600

Let your friend's guitar's cost be = n

According to the question =

Your guitar costs $ 40 more than twice the cost of your friend's guitar which is n ,but your guitar's cost is $ 600.

So ,the linear equation for this will be =

= 2n+$40 = $600

= 2n = $600-$40

= 2n = $ 560

= n = $ 560/2

= n = $ 280

The cost of your friend's guitar is $280 by creating an equation based on the cost comparison to your own guitar, and then solving for the variable representing your friend's guitar's cost.

You paid $600 for a new guitar, which costs $40 more than twice the cost of your friend's guitar. To find the cost of your friend's guitar, let's denote the cost of your friend's guitar as x. According to the information given, your guitar's cost can be represented by the equation 2x + $40 = $600. Solving for x will give us the following steps:

Subtract $40 from both sides of the equation: 2x = $600 - $40.

This simplifies to 2x = $560.

Divide both sides by 2: x = $560 / 2.

Therefore, x equals $280.

The cost of your friend's guitar is $280.

Answer:24r+48h= $1248

Step-by-step explanation:

24*36+48*8

864 + 384 = 1248

Not sure if it's correct I'm not brilliant with equations xx

Answer:

Correct

24(36) + 24(2) x 8 =

Step-by-step explanation:

In this context:

[tex]\boxed{m\angle U=40^{\circ}}[/tex]

Hello! Remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any diagram, so I'll assume ΔSTU and ΔDEF are similar. Two triangles are similar if and only if their corresponding angles are congruent and their corresponding sides are in proportion.

So:

[tex]\angle S=\angle D \ldots eq1 \\ \\ \angle T=\angle E \ldots eq2 \\ \\ \angle U=\angle F \ldots eq3[/tex]

We also know:

[tex]\angle S+\angle T+\angle U=180^{\circ} \ldots eq4 \\ \\ \angle D+\angle E+\angle F=180^{\circ} \ldots eq5[/tex]

Suppose we know:

[tex]\angle S=30^{\circ} \\ \\ \angle E=110^{\circ}[/tex]

Then, by eq2:

[tex]\angle T=\angle E =110^{\circ}[/tex]

By substituting ∠S and ∠T into eq4:

[tex]\angle S+\angle T+\angle U=180^{\circ} \\ \\ 30^{\circ}+110^{\circ}+\angle U=180^{\circ} \\ \\ \\ Isolating \ \angle U: \\ \\ \angle U=180^{\circ}-(30^{\circ}+110^{\circ}) \\ \\ \angle U=180^{\circ}-140^{\circ} \\ \\ \angle U=40^{\circ}[/tex]

Finally:

[tex]\boxed{m\angle U=40^{\circ}}[/tex]

Answer: Both £56

Step-by-step explanation:

We deliver: 10 x 20 x 40 = 8000

8000 x 0.80/cm = £56

£56

Go Parcels: 2(10 x 20) + 2(10 x 40) + 2(20 x 40) = 2800

2800 x 0.02/cm = £56

£56

Answer:

C = 18.84 ft

Step-by-step explanation:

C = 2 * pi *r

The radius is 3 ft

C = 2 * 3.14 * 3

C = 18.84

Answer:

To answer the problem above we let x be the number of people who prefers salad and y be the number of people who chose steak. For lunch they will be spending $41. That is,

                                  7x + 10y = 41

Now, for dinner they will be spending $51. That is,

                                9x + 12y = 51

The values of x and y from both equations are 3 and 2, respectively. Therefore, 3 people will choose a salad

Answer:

3

Step-by-step explanation:

:) It's 3.

Answer:

0.02257500m²

Step-by-step explanation:

10^3 x 0.006

Answer: 3

Answer:

The middle cells are the joint frequency numbers. When analyzing data in a two-way frequency table, you will be looking for joint relative frequency, which is the ratio of the frequency in a particular category and the total number of data values. The purple cells on this table are all joint frequency numbers.

The numbers in the column on the very right and on the row on the very bottom are the marginal frequency numbers. When analyzing data in a two-way frequency table, you will be looking for marginal relative frequency, which is the ratio of the sum of the joint relative frequency in a row or column and the total number of data values.

Conditional relative frequency numbers are the ratio of a joint relative frequency and related marginal relative frequency.

Step-by-step explanation:

Answer:

Step-by-step explanation:

favorable events=x

total number of events=x+y

P=(favorable events)/(total number of events)=x/(x+y)

Answer:

areas of bases must be same as Vol=area of base×h/3

Answer:

The areas of the bases must be the same. yw

Step-by-step explanation:

Answer:

D. (y-4)^2/12^2 + (x-2)^2/6^2=1

Step-by-step explanation:

Took the quiz.

Answer:

d

Step-by-step explanation:

Kevin has to pay $757.86 for the round trip.

A cost function is a mathematical formula used to chart how production expenses will change at different output levels.

How find how much will Kevin have to pay for the round-trip?

Given Miguel, Sterling, and Kevin plan to split the cost of a round-trip car ride from Los Angeles, California, to El Paso, Texas, equally. The total cost of the trip from Los Angeles to El Paso was $1136.79, and they expect that the trip back will cost the same.

It’s B because 1136.79 x 2 is 2273.58.

2273.58/3 because there are three people splitting the ticket is 757.86.

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Answer:

x=-1

Step-by-step explanation:

x − 7 = 46 − 9(x + 7)

distribute

x-7 = 46 - 9x -63

Combine like terms

x-7 = -9x-17

Add 9x to each sid

x-7+9x = -9x+9x -17

10x-7 = -17

Add 7 to each side

10x -7+7 = -17+7

10x = -10

10x/10 = -10/10

x = -1

Answer:

x = -1

Step-by-step explanation:

x − 7 = 46 − 9(x + 7)

x - 53 = -9x - 63

10x = -10

x = -1

Answer:

sorry i dont quite understand, were you given more information

Step-by-step explanation:

The required volume of the rectangular prism is unknown and cannot be determined based on the given information.

Volume is defined as the mass of the object per unit density while for geometry it is calculated as profile area multiplied by the length at which that profile is extruded.

Here,
The volume of a rectangular prism is given by the formula:

Volume = length x width x height

In this case, we are given that the length and width of the rectangular prism are 4 units, but we don't have any information about the height. So, we cannot determine the volume of the rectangular prism without knowing its height.

Therefore, the volume of the rectangular prism is unknown and cannot be determined based on the given information.

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The constant of variation k for the inverse variation is found to be 8. When x = 32 is substituted into the formula y * x = k, we find that y = 0.25.

In problems where y varies inversely with x, it means that their product is constant. This can be represented as y * x = k, where k is the constant of variation. Given that y = 16 when x = 0.5, we can find the constant by plugging these values into the formula. Hence, 16 * 0.5 = k, so k = 8.

Now to find y when x = 32, we substitute these values into the formula. We know that y * 32 = 8, so y = 8 / 32. This simplifies to y = 0.25.

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Answer:

1/7

Step-by-step explanation:

i learned this arealdy

The probability of drawing at least one red marble from a bag containing 3 blue and 5 red marbles in two draws without replacement is 19/28.

To find the probability of drawing at least one red marble from a bag with 3 blue and 5 red marbles, with one draw already taken, we calculate the probability of not drawing a red marble and subtract that from 1. Since there are more red than blue marbles, the probability of drawing a red one on the first draw is higher. However, the problem states that the marbles are not replaced after drawing, so the probabilities change with every draw.

There are two ways to not draw a red marble in two draws:

First draw: blue, Second draw: blue.

First draw: red, Second draw: blue.

Let's calculate these probabilities. For the first case, there's a 3/8 chance of drawing blue first, and then 2/7 chance of drawing blue again, since one blue marble has been removed, which equals to 3/8 * 2/7 = 6/56 or 3/28. For the second case, there is a 5/8 chance of drawing red first, and then a 3/7 chance of drawing blue, equalling 5/8 * 3/7 = 15/56. The sum of these probabilities is 3/28 + 15/56 = 9/28.

Therefore, to find the probability of at least one red, we subtract the summed probabilities from 1: 1 - 9/28 = 19/28.

Thus, the probability of drawing at least one red marble is 19/28.

Answer:

3 pounds

Step-by-step explanation:

1. 50 + 50 = 100

2. 100 / 5 = 20

3. 60 / 20 = 3

Each chicken eats approximately 0.3333 pounds of feed per day, which is calculated by dividing the total feed (100 lbs) by the number of days (60) and then by the number of chickens (5).

To calculate how much chicken feed each chicken eats a day, we need to start by understanding the total amount of feed Ryan bought. He bought two 50 lbs bags, which is a total of 100 lbs of chicken feed. Since the feed needs to last 60 days for 5 chickens, we will divide the total feed by the number of days and then by the number of chickens.

First, we convert the weight of the feed into pounds (if it is not already in pounds). We know there are 100 lbs of feed in total.

Next, we divide the total weight of the feed by the number of days to find out how much feed is used per day:
100 lbs / 60 days = 1.6667 lbs per day (for all 5 chickens together).

Finally, we divide the daily feed consumption by the number of chickens to find out how much each chicken eats per day:
1.6667 lbs per day / 5 chickens = 0.3333 lbs per chicken per day.

Therefore, each chicken eats approximately 0.3333 pounds of feed a day.

Answer:

A) x +  y =  - .7

B) -3x + y = 11.7

We'll multiply A) by 3

A) 3x + 3y = -2.1  the add it to B)

B) -3x + y = 11.7

4 Y = 9.6

Y = 9.6 / 4 = 2.4

-3x  + (9.6 / 4) = 11.7

-3x = 9.3

x = -3.1  

Step-by-step explanation:

Answer:9/12

Step-by-step explanation:

1/3 is the same as 4/12

4/12 +5/12=9/12