square in inches, x, and the perimeter of the square in inches, y. What is the constant of proportionality?

Their experimental design was Independent variable was contact plates placed on the tile for less than 5 seconds. Option D is the correct answer.

The independent variable is the factor that is being manipulated by the experimenter. In this case, the experimenter is manipulating the length of time the plates are on the tiles. The dependent variable is the factor that is being measured by the experimenter. In this case, the experimenter is measuring the amount of bacteria on the plates.

The control is a group of subjects that are not exposed to the independent variable. In this case, the control group is the floor tiles that have been inoculated with chicken broth. The control group is used to compare the results of the experimental group, which is the group of plates that have been dropped on the tiles.

The standardized variables are the factors that are kept the same for both the experimental group and the control group. In this case, the standardized variables are the type of food, the surface of the tiles, and the temperature of the room. These factors are kept the same so that the only difference between the two groups is the length of time the plates are on the tiles.

This experimental design is a well-controlled experiment because the experimenter has taken steps to ensure that the only difference between the two groups is the length of time the plates are on the tiles. This will allow the experimenter to make accurate conclusions about the effect of the independent variable on the dependent variable. Option D is the correct answer.

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The following question may be like this:

The Myth busters conducted an experiment to test the five second rule. Which of the following represented their experimental design?

Answer:

Step-by-step explanation:

To evaluate the given expression, we need to substitute the given values for x, y, and z. The expression becomes:

yz + x²

Substituting the given values, we get:

(6.1 * 0.2) + (3.2^2)

This simplifies to:

1.22 + 10.24

Therefore, the value of the expression is approximately 11.46.

11.46

gimme brainlyest gang

Answer: I think it's 9

Step-by-step explanation:

Answer:

t = 8

Step-by-step explanation:

The sum of the three interior angles of a triangle is always 180 degrees.  Thus, we can add up the three angles and set the sum equal to 180 degrees:

6t + t + 36 + 11t = 180

This simplifies to 18t + 36 = 180, or 18t = 144.

Solving for t results in t = 8

Answer:

y = 77 degrees

Step-by-step explanation:

180 = 4x + 29 + 9x - 5

180 = 13x + 24

156 = 13x

x = 12

4x + 29 = y

48 + 29 = y

y = 77 degrees

Step-by-step explanation:

I guess this means a reflection across the x-axis.

what does that mean ?

imagine the line of the x-axis is a mirror.

everything that is originally above the x-axis, is now below the x-axis.

and everything that is originally below the x-axis, is now above it.

as with an actual mirror, the closer something is originality to the mirror the closer it also appears to be in the mirrored image.

how do we do this in math ?

well, a functional value of e.g. 1 turns into -1.

e.g. 2 turns into -2.

but also e.g. -3 turns into 3.

in other words, we only need to flip the sign of the functional result values.

how do we do this ?

by multiplying the whole original functional value by -1.

and therefore,

g(x) = f(x) × -1 = (1/2 × x - 3) × -1 = -x/2 + 3

4a) The null hypothesis is that there is no difference in math performance between learning while listening to classical music and learning without music.
4b) The research/alternative hypothesis based on the researcher's hypothesis is that learning while listening to classical music improves math performance.
4c) The mean math performance when music played was 15.5, and when no music played was 17.9. The calculated t statistic was -4.60, and the p-value associated with the test statistic was < .001.
4d) The p-value associated with this result is less than .05.
4e) Based on the p-value, we reject the null hypothesis.
4f) The result is statistically significant.
4g) Based on this information alone, it is not safe to conclude that students perform better when listening to music while learning. Other factors could have influenced the results, such as individual differences in the students or other environmental factors. Further research would be necessary to make a definitive conclusion.
4a.) The null hypothesis states that there is no significant difference in math performance between the two conditions (learning with classical music and learning without music).

4b.) The research/alternative hypothesis states that learning while listening to classical music improves performance in math compared to learning without music.

4c.)
- Mean math performance when music played: 15.5
- Mean math performance when no music played: 17.9
- Calculated t statistic: -4.60
- P-value associated with the test statistic: < 0.001

4d.) The p-value associated with this result is less than 0.05.

4e.) Based on the p-value, we reject the null hypothesis.

4f.) The result is statistically significant.

4g.) While the result is statistically significant, it actually shows that students performed better when not listening to music while learning. This contradicts the researcher's initial hypothesis, so it is not safe to conclude that students perform better when listening to music while learning.

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Answer:

Use Calculator:

Approximately. 1429.411

Step-by-step explanation:

Hope it Helps!!!

Answer:

A. 1 inch = 6 miles

Step-by-step explanation: We need to divide 30 by 5 to see how much 1 inch equals. 30÷5=6. We now known 1 inch = 6 miles.

Answer:

5 inch- 30 miles

Step-by-step explanation:

Answer:

the answer is 50

Step-by-step explanation:

pls give me brainlist

Answer:

X=2

Step-by-step explanation:

I'm sure it's the result.. Jdjdj

Answer:

(0,-6), (-2,0)

Step-by-step explanation:

-3x-y=6

-y=6+3x

y=-3x-6

when x=0, y=-6

when y=0 x=-2

Answer: B (The cost of a notebook is $0.75, and the cost of a folder is $0.25.)

Step-by-step explanation:

No need for explanation. i know i’m right!!

a) $5.48  = $5.00

b) $2.97  = $3.00

c) $0.85  = $1.00

f) $14.98  = $15.00

d) $9.99  = $10.00

e) $1.29 = $1.00

Answer:

h=6cm

Step-by-step explanation:

V=lwh

126=3×7×h

h=6cm

Answer:

8234.000 x 10^3

Step-by-step explanation:

Answer:

823,400,000,000,000

Step-by-step explanation:

Answer:

\(40-50d\)

Step-by-step explanation:

Use the distributive property:

\(10(4-5d)\\\\10(4)-10(5d)\\\\40-50d\)

Since these are not like terms, they can't be further simplified.

:Done

The distance between the given coordinates  (−5, −19) and (−5, 32) is given by 51 units.

Let us consider the coordinates of two given points be,

(x₁ , y₁ ) = ( -5 , -19 )

(x₂ , y₂ ) = (-5 , 32 )

Distance formula between two points is equals to,

Distance = √ ( y₂ - y₁)² + ( x₂ - x₁ )²

Substitute the values of the coordinates we have,

⇒ Distance = √ ( 32 - (-19))² + ( -5- (-5) )²

⇒ Distance = √ (32 +19)² + (-5 + 5)²

⇒ Distance = √ 51² + 0²

⇒ Distance =  51 units.

Therefore, the distance between the two points is equal to 51 units.

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Below are some authorial techniques that can be used to create mystery, tension, or surprise in literature.

Order of events: The order in which events are presented can create a sense of mystery or suspense.

Pacing: The pace of a story can also be used to create suspense. A slow-paced story can build tension by allowing the reader to dwell on the details of a situation, while a fast-paced story can create excitement and surprise by keeping the reader guessing what will happen next.

Structure: The structure of a story can also be used to create mystery, tension, or surprise. For example, a story that is told in flashback can create a sense of mystery by revealing information about the past that is relevant to the present.

Time manipulation: The manipulation of time can also be used to create suspense.

Language: The language that an author uses can also be used to create mystery, tension, or surprise. For example, an author might use vague or ambiguous language to create a sense of mystery, or use strong language to create a sense of tension or surprise.

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Answer:

- The actual product is less than the estimate

- The numbers differ by less than one

Step-by-step explanation:

Given

Product of 3 and two-fifths & \(-3\frac{7}{8}\)

Required

Compare actual result with approximated result

Calculating the actual result;

3 and two-fifths means \(3\frac{2}{5}\)

So, the Product of 3 and two-fifths & \(-3\frac{7}{8}\) becomes

\(Product = 3\frac{2}{5} * -3\frac{7}{8}\)

Convert fractions to improper

\(Product = \frac{17}{5} * -\frac{31}{8}\)

Combine fractions to form one

\(Product = \frac{-17 * 31}{5 * 8}\)

Multiply numerators and denominator

\(Product = \frac{-527}{40}\)

Convert fraction to decimal

\(Product = -13.175\)

The nearest half of -13.175 is -13

Hence;

\(Estimate = -13\)

By comparison:-

- The actual product (-13.175) is less than the estimate (-13)

- The difference between both results is less than 1;

The difference is calculated as follows

Difference = |Actual Product - Estimate|

Difference = |-13.175 - (-13)|

Difference = |-13.175 +13|

Difference = |-0.175|

Difference = 0.175

Answer:

B

Step-by-step explanation:

The actual product is greater than the estimate. The numbers differ by less than one. took the test 2021

Answer:

Based on the weights assigned to these grades, Emily's weighted average in the class would be 77.6 marks.

Answer:

-1.9

Step-by-step explanation:

LOL IM ON ECSTACY

To find the indefinite integral of ∫(5/x - 5/(5√x)) dx, we will integrate each term separately. The indefinite integral of (5/x - 5/(5√x)) with respect to x, on the domain of positive real numbers, is given by 5 ln |x| - 2√x + C.

The integral of 5/x with respect to x is given by:

∫(5/x) dx = 5 ln |x| + C1,

where ln represents the natural logarithm and C1 is the constant of integration.

The integral of -5/(5√x) can be simplified as follows:

∫(-5/(5√x)) dx = -∫(1/√x) dx = -2√x + C2,

where C2 is the constant of integration.

Putting the results together, we have:

∫(5/x - 5/(5√x)) dx = 5 ln |x| - 2√x + C,

where C = C1 + C2 is the combined constant of integration.

Therefore, the indefinite integral of (5/x - 5/(5√x)) with respect to x, on the domain of positive real numbers, is given by 5 ln |x| - 2√x + C.

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Answer:

40%

Step-by-step explanation:

4/10=.40

.40=40% as a percentage

The given series Σ(5n^3) is found to be convergent using comparison test.

The Comparison Test states that if 0 ≤ a_n ≤ b_n for all n and the series Σ(b_n) converges, then the series Σ(a_n) also converges. Conversely, if 0 ≤ a_n ≤ b_n for all n and the series Σ(b_n) diverges, then the series Σ(a_n) also diverges.

In this case, we have Σ(5n^3) as our series. We can compare it to the series Σ(n^3) to determine convergence or divergence.

Since n^3 ≤ 5n^3 for all positive integers n, we have 0 ≤ n^3 ≤ 5n^3. Therefore, we can conclude that Σ(n^3) is an upper bound for Σ(5n^3).

Now, let's consider the series Σ(n^3). The series Σ(n^3) is a known series that converges. It can be shown using various convergence tests such as the p-series test.

Since 0 ≤ n^3 ≤ 5n^3 for all positive integers n and Σ(n^3) converges, we can apply the Comparison Test. According to the Comparison Test, if a series is bounded above by a convergent series, then the series is also convergent.

Therefore, the series Σ(5n^3) converges because it is bounded above by the convergent series Σ(n^3).

In conclusion, the series Σ(5n^3) is convergent.

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Answer:

B

Step-by-step explanation:

After adding them all together, we end up with 351. There are 12 numbers, so we do 351/12, getting 29.25.

The correct answer is: 4.75; a puppy who is just born is predicted to weigh 4.75 ounces.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The equation of the line of fit is w = 4.75 + 0.5d, where w is the weight of the puppy in ounces and d is the age of the puppy in days.

The w-intercept of the line of fit is the value of w when d = 0, that is, the predicted weight of a puppy when it is just born.

From the equation, we see that when d = 0, we have:

w = 4.75 + 0.5(0) = 4.75

Therefore, the w-intercept of the line of fit is 4.75 ounces, and its meaning in terms of the scenario is that a puppy who is just born is predicted to weigh 4.75 ounces.

So, the correct answer is: 4.75; a puppy who is just born is predicted to weigh 4.75 ounces.

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Answer:90

Step-by-step explanation:

The cost price to buy 3 pounds of beans at the farmers' market than at the store is $3.75

In the above question, it is given that

A farmer's market sells organic locally grown beans for = $1.25 per pound

We need to find cost price to buy 3 pounds of beans at the farmers' market than at the store

As the per pound grown beans price is given than it is reasonable to find the cost price for the 3 pound grown beans by the farmer

So,

Price per pound of bean grown = $1.25

Price of 3 pound of bean grown = 3 x 1.25

= $3.75

Hence, the cost price to buy 3 pounds of beans at the farmers' market than at the store is $3.75

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