a nurse researcher assignins subjects to experimental and control groups in such a manner that each subject in a population has an equal chance of being selected

Answer:

1. y=1/4x+3

2. y=2x

3. y=-1/4x+9/2

4. I cannot solve 4 because there is not two point to solve fir slope intercept form

Answer:

6cm*4.5cm = 27cm²

5cm*5cm = 25cm²

The first has a greater area - by 2 square centimeters.

Step-by-step explanation:

Answer:5 1/2

Step-by-step explanation:

4 1/2+4 1/2=9

14 1/2 -9=5 1/2

Answer:

28

Step-by-step explanation:

substitute 4 in for p in the equation

64-9p=

64-9(4)=

64-36=

28

Answer:

1st,2nd,3rd, and 5th option

Step-by-step explanation:

Let convert the intergers into radical numbers

\( \sqrt{7} > \sqrt{4} \)

\( \sqrt{7} < \sqrt{49} \)

\( \sqrt{7} < \sqrt{8} \)

\( \sqrt{8 } < \sqrt{4} \)

\( \sqrt{8} < \sqrt{64} \)

As radical numbers approaches, positive infinity, the answer of the radical gets bigger. So using this explanation,

The first option, Second Option, Third Option, and Fifth Option are true.

Answer:

A, B, C, E

Step-by-step explanation:

Did on edg.  its right

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

a. Ryan's rate of change is $15 per month;

Taylor's rate of change is $20 per month

b. Ryan's starting balance is $50;

Taylor's starting balance is $25.

Recall:

Ryan's Savings Plan Function:

s = 15m + 50

Thus, the starting value (starting balance) modelled by this function is $50

The slope/rate of change is $15 per month

Taylor's Savings Plan:

Given the table, the starting value will be the amount saved (initial value) at 0 number of months.

Using (0, 25) and (1, 45) find the rate of change:

In summary:

a. Ryan's rate of change is $15 per month;

Taylor's rate of change is $20 per month

b. Ryan's starting balance is $50;

Taylor's starting balance is $25.

Learn more about linear function on:

https://brainly.com/question/15602982

Answer:

Let the breadth is x, then the length is 3x.

The area is:

The breadth is decreased by 2 m:

The length is increased by 4m:

The area is now:

The breadth was 4 m and the length  12 m

Answer:

(1,-1)

Step-by-step explanation:

-2x-1 = x+2

-3x = 3

x = -1

substitute

y = (-1) + 2

y = 1

point: (1,-1)

False. Analysts should definitely worry about the users' perceptions of the new system during acceptance testing. Acceptance testing is the final stage of software development where the system is tested by end-users to ensure that it meets the specified requirements and is ready for deployment.

During acceptance testing, analysts need to ensure that users find the system easy to use, efficient, and effective in performing the intended tasks. If the users perceive the system to be difficult to use or inefficient, it can lead to user resistance, decreased productivity, and increased costs. Therefore, analysts need to gather feedback from users during acceptance testing and make necessary adjustments to ensure that the system meets the user's expectations. By doing so, analysts can ensure a successful deployment and adoption of the new system.

To know more about Analysts visit :

https://brainly.com/question/32111010

#SPJ11

Answer:

1.32

Step-by-step explanation:

total area = 33

33/5 1/2 = 6 .         X=6

5 1/2 x 1/2 = 2.75 .       6 x 1/2 = 3

2.75 x 3 = 8.25

new area = 8.25

8.25 x .13 = 1.32

You will be required to pay $130.92 in interest. So, option 2 is correct.

Simple interest is calculated using the following formula: Simple Interest (SI) is calculated as P R T / 100. P stands for the principal sum, R for the interest rate, and T for the interest period. The total amount due is the sum of the principal plus the simple interest, or P + SI.

This specific percentage represents the loan's interest rate. The cost of borrowing money is called interest, and it is usually expressed as a percentage, such as an annual percentage rate (APR). Interest may be paid to lenders for the use of their money.

You shell out $875.00 for a PC plus 5% sales tax.

Thus, the final price is 875+(0.05875)

= $918.75.

Rate per month: 14.25/12/100

= 0.011875

So, the rate for a year is 12 x 0.011875

=$130.92.

Therefore, you will be required to pay $130.92 in interest.

Hence, option 2 is correct.

To know more about interest, visit:

https://brainly.com/question/28792777

#SPJ1

The explicit formula for the sequence is aₙ=(-4).(-4)ⁿ⁻¹ and the 8th term is 65536

The given sequence is -4, 16, -64, 256,...

If we observe the sequence it is a geometric sequence

aₙ=a.rⁿ⁻¹

a is the first term and r is the common ratio

From the sequence the first term is -4 and common ratio is -4

aₙ=(-4).(-4)ⁿ⁻¹

Plug in the value n as 8

a₈=(-4).(-4)⁷

The value of minus four power seven is minus sixteen thousand three hundred eighty four

a₈=(-4)(-16384)

When four is multiplied with sixteen thousand three hundred eighty four we get sixty five thousand five hundred thirty six

a₈= 65536

Hence, the explicit formula for the sequence is aₙ=(-4).(-4)ⁿ⁻¹ and the 8th term is 65536

To learn more on Sequence click:

https://brainly.com/question/21961097

#SPJ1

To solve for x, we just need to compute the inverse of A (if it exists) and multiply it by b. If A is invertible, then this method will give us the unique solution to the linear system Ax=b.

To solve a linear system of the form Ax=b using inverse matrices, we can first find the inverse of matrix A (if it exists) and then multiply both sides of the equation by \(A^-1\), giving us:

\(A^-1Ax = A^-1b\)

Since\(A^-1A\) is the identity matrix I, we can simplify the left-hand side to just x:

\(x = A^-1b\)

However, it's worth noting that computing the inverse of a matrix can be computationally expensive, particularly for large matrices.

So, while using inverse matrices can be a useful technique for solving small systems, it may not be the most efficient approach for larger systems. In those cases, other techniques such as Gaussian elimination or LU decomposition may be more appropriate.

To know more about linear system refer to-

https://brainly.com/question/27664510

#SPJ11

If a distribution of scores is shown in a bar graph, it suggests that the scores were measured on an ordinal scale of measurement.

An ordinal scale is a type of measurement scale that categorizes and orders variables or data points based on their relative ranking or position. In this case, the bar graph represents the frequencies or counts of different categories or ranges of scores, indicating an ordered arrangement of the data. However, the bar graph alone does not provide information about the exact numerical differences between the scores or their precise magnitudes.

To know more about graph visit:

brainly.com/question/17267403

#SPJ11

The probability that a randomly chosen college student exercises in the morning or afternoon is 0.76

We have given that the M be the event that the student exercises in the morning and A be the event that the student exercises in the afternoon.

To find : The probability that a randomly chosen college student exercises in the morning or afternoon

P(M) = 0.25+0.37 = 0.62

P(A) = 0.14+0.37 = 0.51

P(M and A) = 0.37

Now,

P(M or A) = P(M) + P(A) - P(M and A)

                = 0.62 + 0.51 - 0.37

                = 0.76

Hence, Option last 0.76 is the correct choice.

To learn more about the probability click here:

brainly.com/question/30034780

#SPJ4

Extra money for savings: $2,400 (income) - $1,815 (expenses) = $585

Mr. Smith earns $20/hour working full time (40 hours/week).

His weekly income is 20 * 40 = $800

His monthly income is 800 * 4 = $3,200

After taxes (25%): 3200 * (1 - 0.25) = $2,400

Total expenses:

Household: $1,410

Automobile: $200 + $100 + $90 + $15 = $405

Total monthly expenses: $1,410 + $405 = $1,815

Extra money for savings: $2,400 (income) - $1,815 (expenses) = $585

Read more about expenses here:

https://brainly.com/question/28995167
#SPJ1

The SI base unit for measuring temperature is 4) Kelvin. Temperature is a physical quantity that measures the degree of hotness or coldness of an object or a system.

The International System of Units (SI) is a globally accepted system of measurement. In SI, temperature is measured using the Kelvin (K) scale, which is the SI base unit for temperature.

The Kelvin scale is based on the absolute zero point, which is the lowest possible temperature where all molecular motion ceases. Absolute zero is defined as 0 Kelvin (0 K). Temperature increments on the Kelvin scale are equivalent to increments on the Celsius scale, with 1 Kelvin being equal to 1 degree Celsius.

The other options listed, such as Celsius and Fahrenheit, are not SI base units for temperature but are commonly used in everyday contexts. Celsius (°C) is widely used in many countries and is based on the Celsius scale, which sets the freezing point of water at 0°C and the boiling point of water at 100°C at sea level. Fahrenheit (°F) is used mainly in the United States and a few other countries and has its freezing point at 32°F and boiling point at 212°F at sea level. However, neither Celsius nor Fahrenheit is considered an SI base unit for temperature.

Learn more about temperature here:

brainly.com/question/28463594

#SPJ11

Answer:

Penelope collected 43 quarters, 86 dimes, 344 nickels, and 129 pennies.

Step-by-step explanation:

From the problem statement, we know:

d = 2q (Twice as many dimes as quarters)

n = 4d (Four times as many nickels as dimes)

p = 3q (Three times as many pennies as quarters)

q + d + n + p = 780

q + 2q + 4d + 3q = 780

10q + 4d = 780

10q + 4(2q) = 780

18q = 780

q = 43.33 (rounded to two decimal places)

Since we can't have a fraction of a coin, we need to round down to the nearest whole number. Therefore, Penelope collected 43 quarters.

Using the other equations, we can then find the number of each type of coin:

d = 2q = 2(43) = 86 dimes

n = 4d = 4(86) = 344 nickels

p = 3q = 3(43) = 129 pennies

The solution to the inequality is all values of x less than 5. We can write the solution set using interval notation as (-∞, 5).

To solve the inequality -5x - 3 + 2x > -18, we need to isolate the variable x on one side of the inequality sign.

Starting with the given inequality:

-5x - 3 + 2x > -18

Simplifying the left-hand side by combining the like terms:

-3x - 3 > -18

Adding 3 to both sides:

-3x > -15

Dividing both sides by -3, and reversing the inequality sign since we are dividing by a negative number:

x < 5

Therefore, the solution to the inequality is all values of x less than 5. We can write the solution set using interval notation as (-∞, 5).

Learn more about inequality here : brainly.com/question/18881247

#SPJ1

Answer:

6

Step-by-step explanation:let the number be x a

so we have,

2(x-5)=2           open the brackets

2x-10=2

2x=2+10

2x=12

x=12/2=6

x=6

Answer:

$122.88

Step-by-step explanation:

the phone decreases by 20% each year , that is

(100 - 20)% = 80% = \(\frac{80}{100}\) = 0.8

the phone reduces by a factor of 0.8 each year , then after 4 years

value = $300 × \((0.8)^{4}\) = $122.88

Answer:

c) x = 120, y = 70

Step-by-step explanation:

Since lines a, b and c are parallel, x = 120.

That angle inside the triangle kind of below x would be 180-120 = 60 degrees.

All 3 inside (interior) angles of a triangle add up to 180.

So 60+50+y = 180

110 + y = 180

y = 180-110

y = 70.

x =120, y = 70.

Choose option c.

Answer:

∠P ≅ ∠R

Step-by-step explanation:

We can see here two triangles , ∆ PQS and ∆ RQS.

To Prove :-

We can prove the given two triangles congruent then we can easily prove it out.

In ∆ PQS and ∆ RQS

Therefore by SAS congruence condition , both triangles are congruent .

Hence ,

Answer:

Step-by-step explanation:

6y-42=4y

2y=42

y=21

6x-12=2x+36

4x=48

x=12

To rent a certain meeting room, a college charges a reservation fee of $34 and an additional fee of $8.90 per hour. the chemistry club wants to spend at most $78.50 on renting the meeting room. the possible numbers of hours the chemistry club could rent the meeting room is 5 hours

Reservation fee = $34

Additional fee = $8.90 per hour

The chemistry club wants to spend at most $78.50 on renting the room.

To find:

The possible numbers of hours the chemistry club could rent the meeting room.

Let n be the number of hours the chemistry club could rent the meeting room.

Reservation fee = $34

Additional fee for one hour = $8.90

Additional fee for n hours = $8.90n

Total fee = $(8.90n+34).

The chemistry club wants to spend at most $78.50 on renting the room.  It means the total fee must be less than or equal to 78.50.

therefore 8.90n + 34 = 78.50

               8.90n = 44.5

                     n = 5

Therefore, the possible numbers of hours the chemistry club could rent the meeting room is 5hours

learn more about of amount here

https://brainly.com/question/18952372

#SPJ4

Answer:

where

r radius of semicircle

→ ½ * 22/7 * r² = 35

→ 11/7 * r² = 35

→ r² = 35*7/11

→ r² = 245/11

→ r² = 22.77

→ r = √22.77

→ r = 4.77

Therefore,

Diameter = 2*4.77

= 9.54 cm

The number of ways people arranged by photographer in a row as per the given situations are:

a. Bride and groom next to each other = 10080 ways

b. Bride and groom are not next to each other = 30240ways

c. Bride is sitting left of the groom =5040 ways

Number of people needs to be arranged by photographer = 8

Total number of ways 8 people can be arranged

= 8!

= 40320

a. The bride must be next to the groom

Let bride and groom to be consider as one pair

They can switch their possible among themselves

= 2!

Number of people to be arranged = 7!

Total number of ways when bride must be next to groom

= 7!2!

= 10080ways

b. The bride cannot be sit next to groom

= 40320 - 10080

= 30240

c. Bride is positioned to the left of the groom

= 7!

= 5040

Therefore, the number of ways photographer arranged the people as per the given conditions are:

a. Bride next to groom = 10080 ways

b. Bride cannot sit next to groom = 30240ways

c. Bride is left to the groom = 5040ways

Learn more about ways here

brainly.com/question/47446

#SPJ4

First, we can simplify the equation by isolating the variable on one side:

2√x + 6 - 3 = 19

2√x + 3 = 19

2√x = 16

√x = 8

Now we can square both sides of the equation to isolate x:

(√x)² = 8²

x = 64

Therefore, the solution to the equation 2√x + 6 - 3 = 19 is x = 64, which corresponds to answer choice (e).

Hope this helped (:

Answer:

Option (C)

Step-by-step explanation:

From the graph attached in the picture,

Graph shows the relationship between time and the population of a culture of bacteria.

Option (A).

After 10 hours there are 10000 bacteria.

Since, at t = 0, number of bacteria = 10000.

False.

Option (B).

After 10 hours there are no more bacteria.

Since, from the given graph bacteria population is increasing exponentially every hour.

Therefore, from t = 0, where the population was 10000, bacteria will be much more in the numbers.

False.

Option (C).

The population began with 10000 bacteria.

True.

Option (D).

The population is multiplying itself by 10 each hour.

Since, growth is exponential therefore, bacteria population is growing faster.

False.

Option (C) is the answer.