Someone please solve this

Answer:

B

Step-by-step explanation:

The base is the number the exponent is attached to.

If the sample data points are very close to the estimated regression line, then standard error is likely to be small and R square will tend to be high. So, correct options are C and D.

Firstly, the slope of the regression line may not necessarily be a very big positive number. The slope of the line depends on the relationship between the independent and dependent variables, and how the dependent variable changes with a unit change in the independent variable.

If the data points are closely packed around the line, it means that the slope is more likely to be a moderate or small number.

Secondly, it is unlikely that the line will be decreasing, as the regression line is usually a straight line that shows the average relationship between the independent and dependent variables.

Thirdly, if the data points are very close to the estimated regression line, then the standard error is likely to be small. This means that the estimated regression line is a good fit for the data and the observed values are close to the predicted values.

Fourthly, the R square will tend to be high if the data points are close to the estimated regression line. R square is a measure of how well the regression line fits the data points, and if the data points are close to the line, then the R square will be higher.

Lastly, if the data points are very close to the estimated regression line, then the line is likely to look visually appealing and not "ugly." The regression line is a summary of the data and should be a good representation of the observed relationship between the variables.

So, correct options are C and D.

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Answer:

Jomar needs to study for 3 hours on Thursday to be prepared for his test.

Step-by-step explanation:

If we want to make the average a certain amount of time over a certain number of days, we can first figure out the number of days and total amount needed. Here, we can see that the average is 1 hour and 30 minutes, and there are 6 days (Saturday-Thursday). Therefore, as

average = total / length, we can multiply both sides by length to get

average * length = total

Plugging 1.5 hours in for average and 6 days for length, we get

1.5 * 6 = 9 hours as the total amount needed to get an average of 1.5 hours a day

Our total so far is 2 hours for Saturday, 2 hours for Sunday, and 2 hours for Monday. This adds up to 6 hours, and we need 9. The difference between 9 and 6 is 3, meaning that Jomar needs to study for 3 hours on Thursday to be prepared for his test.

The total amount of money collected by the shop on Monday is $13410.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Given;

During a sale, a shop sold diaries at $18 each.

One diary was given free with every 3 diaries bought.

Now,

A.  the maximum number of diaries that could be bought with $500;

=500/18=27.7

Free diaries with 27 diaries=27/3=9

B. Number of diaries company will receive;

=740/18=41

Free diaries=41/3=13

Total diaries company will get= 41+13=54

C.  The total amount of money collected;

1/5th of 745=149

Diaries left=745-149=596

Cost= 745*18=13410

Therefore, by algebra the cost of diaries will be $13410.

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Answer:

6

Step-by-step explanation:

3/4 * x/7 = 9/14

x= 6

Answer:

C -6

step by step explanation:

Answer: D(2750) = 637.5

if total sales = $2750 then total donation = $637.5

Step-by-step explanation:

GIven: A local coffee shop has made a flat donation of $500 and also give a percent of their total sales over a specified weekend.

The total donation can be modeled by the function rule D(s)=500+0.05s,

where s = total sales at the coffee shop during the fundraising weekend in dollars.

Now, D(2750) = 500+0.05(2750)

= 500+ 137.5

= 637.5

i.e. if total sales = $2750 then total donation = $637.5

The condition that is not sufficient to show that the two triangles are congruent is (b) ASA similarity statement

From the question, we have the following parameters that can be used in our computation:

The triangles (see attachment)

These triangles are similar is because:

The triangles have similar corresponding side and congruent angles

By definition, the SAS similarity statement states that

"If two sides in one triangle is proportional to two sides in another triangle and the included angle in both are congruent, then the two triangles are similar"

This means that they are similar by the ASA similarity statement

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The coordinates of the point at 3/4 of the distance from A to B from A is (-3.5, 1.25)

The coordinates of point A = (-5, -4),

The coordinates of the point B = (-3, 3)

Let the point at the distance 3/4 from A to B = P

The coordinates of point 3/4 from A to B = P

At the x-coordinate, the distance from B to A is =  -3-(-5) = 2 units.

At the y-coordinate, the distance from B to A is = 3-(-4) = 7 units.

Hence, the coordinates of P = (-5 + (3/4×(x-coordinate), -4 + 3/4×(y-coordinate)

                                            P = (-5 + (3/4×(2), -4 + 3/4×(7))

                                            P = (-3.5, 1.25)

Hence, the coordinates of the point at 3/4 of the distance from A to B from A is (-3.5, 1.25).

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The complete question is -

What are the coordinates of the point 3/4 of the way from A to B?

Possible causal reasons for the correlation between time spent playing video games and aggression are:

1. Video games cause aggression: This suggests that playing violent video games leads to aggressive behavior. To study this causal hypothesis, one possible approach would be to randomly assign participants to play either a violent or non-violent video game for a certain amount of time and then measure their level of aggression using a standardized aggression scale. This could be repeated with different samples to increase the reliability of the results.

2. Aggressive individuals seek out violent video games: This suggests that individuals who are already predisposed to aggression are more likely to choose to play violent video games. To test this hypothesis, researchers could administer an aggression scale to participants before asking them to report how often they play video games, and what types of games they prefer. The correlation between aggression scores and the amount of time spent playing violent video games would then be calculated.

3. A third variable is responsible for the relationship: This suggests that there is a third variable that causes both increased video game play and aggression. For example, this third variable could be stress levels, which may increase the likelihood of both playing video games and displaying aggressive behavior. To study this hypothesis, researchers could measure stress levels in participants and then ask them to report how often they play video games and their level of aggression. The correlation between stress levels and both video game play and aggression could then be calculated.

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In 18 minutes the number of bacteria would reach 10⁹.

Exponents are used in exponential functions, as the name implies. But keep in mind that an exponential function has a constant as its base and a variable as its exponent, not the other way around (if a function has a variable as the base and a constant as the exponent then it is a power function but not an exponential function). One of the following forms can be an exponential function.

The exponential function is a type of mathematical function that is useful in determining the growth or decay of quantities such as population, money, and price that are increasing or decreasing exponentially.

If we divide 10⁹ by 6 we get 18.166666

So, In 18 minutes the number of bacteria would reach 10⁹

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a. The original statement is "Some students like geometry." The negation of this statement is "No students like geometry." To determine which statement is true, we would need more information.

If there is at least one student who likes geometry, then the original statement is true. However, if it is not the case that any student likes geometry, then the negation is true. b. The original statement is "There is a quadrilateral for which the diagonals do not intersect." The negation of this statement is "For all quadrilaterals, the diagonals intersect." To determine which statement is true, we need to consider the properties of quadrilaterals.

In Euclidean geometry, the diagonals of a convex quadrilateral always intersect, so the negation is false and the original statement is true. c. The original statement is "All right triangles are isosceles." The negation of this statement is "There exists a right triangle that is not isosceles." To determine which statement is true, we can refer to the definition of a right triangle, which states that it has one angle measuring 90 degrees. Since a right triangle can have other angles of different measures, the negation is true and the original statement is false.

d. The original statement is "No equilateral triangle is a right triangle." The negation of this statement is "There exists an equilateral triangle that is a right triangle." To determine which statement is true, we can consider the properties of equilateral triangles. In Euclidean geometry, an equilateral triangle cannot have a 90-degree angle since all its angles are equal and measure 60 degrees. Therefore, the negation is false, and the original statement is true.

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This type of study is prospective cohort study.

Controls consist of individuals from the source population who do not have the outcome of interest. Case-base sampling (also known as "case-cohort" sampling): Controls are selected from the population at risk at the beginning of the follow-up period in the cohort study within which the case-control study was nested.

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Given:

To find:

The correct statements

Explanation:

Since the angles PCQ and SCR are vertically opposite angles.

So, we can write it as,

Therefore, the arc PQ is congruent to arc SR.

So, the first statement is correct.

Since the angles PCQ and SCR are vertically opposite angles and the angles QCR and PCS are vertically opposite angles.

So, we can write it as,

Since the central angle of a circle is 360 degrees.

Therefore,

Therefore, the measure of an arc QR is 150 degrees.

So, the second statement is correct.

Let us find the circumference of the circle.

Using the circumference formula,

Therefore, the circumference of the circle is,

So, the third statement is wrong.

Let us find the arc length of PS.

Here,

Using the formula,

Therefore, the arc length of PS is 13.1cm.

So, the fourth statement is correct.

Let us find the arc length of QS.

Here,

Using the formula,

Therefore, the arc length of QS is 15.7cm.

So, the fifth statement is correct.

Final answer: The statements 1, 2, 4, and 5 are correct.

The values of log5, log3, and log19 are not provided, we cannot determine the exact value of log57 without this information.

We can use the logarithm properties to find the value of log57 given that log75 is 0.83.

One of the logarithm properties states that:

log(a * b) = log(a) + log(b)

Using this property, we can express log57 in terms of log75:

log57 = log(5 * 3 * 19)

Now, we can use the fact that log75 is 0.83 to find log5, log3, and log19, and then add them together to get the value of log57:

log57 = log(5 * 3 * 19)

log57 = log5 + log3 + log19

However, since the values of log5, log3, and log19 are not provided, we cannot determine the exact value of log57 without this information.

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The equation:log_7(5) = 0.69897 / 0.84510Now divide to get the value of log_7(5):log_7(5) ≈ 0.82706So, if log75 = 0.83, then log57 ≈ 0.827.

To find log57 using the given information log75 = 0.83, we can use the change of base formula:  

if log75 = 0.83, then log57 ≈ 0.827. To find log57 using the given information log75 = 0.83, we can use the change of base formula:log_b(a) = log_c(a) / log_c

Here, we want to find log57 (log_7(5)) using the given information log75 (log_5(7)).

We can rewrite the change of base formula as:log_7(5) = log_x(5) / log_x(7)We know that log_5(7) = 0.83,

so we can substitute this value into the equation:log_7(5) = log_x(5) / 0.83

Now we can use any common base, like base 10 or base e, to find the value of log_7(5). Let's use base 10:log_7(5) = log_10(5) / log_10(7)Now

we can calculate the values of log_10(5) and log_10(7) using a calculator:log_10(5) ≈ 0.69897log_10(7) ≈ 0.84510

Now substitute these values back into the equation:log_7(5) = 0.69897 / 0.84510Now divide to get the value of log_7(5):log_7(5) ≈ 0.82706So, if log75 = 0.83, then log57 ≈ 0.827.

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Answer:

Step-by-step explanation:

Hope this helps u !!

102=(1/3)πr²h

102×3÷π÷(4.96)²=h

h=3.96cm

The equation of the altitude passing through point (P) is \(\(y = \frac{5}{11}x + \frac{56}{11}\).\) To find the equation of the altitude passing through point (P), we first need to determine the slope of the line containing the side opposite to point (P).

This line will be perpendicular to the altitude we are looking for.

Let's calculate the slope of the line passing through points \(Q\) and \(R\):\(\[\text{{Slope}}_{QR} = \frac{{y_R - y_Q}}{{x_R - x_Q}}\]\)

Substituting the coordinates of points \(\(Q(-7, 3)\)\)and \(\(R(-2, -8)\):\)\(\[\text{{Slope}}_{QR} = \frac{{-8 - 3}}{{-2 - (-7)}} = \frac{{-11}}{{5}}\]\)

Since the altitude and the side QR are perpendicular, the slope of the altitude will be the negative reciprocal of \(\(\text{{Slope}}_{QR}\)\). Let's call the slope of the altitude \(m\):

\(\[m = -\frac{1}{\text{{Slope}}_{QR}} = -\frac{1}{\frac{-11}{5}} = \frac{5}{11}\]\)

Now that we have the slope \(m\) of the altitude and the point \(P(2, 6)\) it passes through, we can use the point-slope form of a linear equation to find the equation of the altitude:\(\[y - y_1 = m(x - x_1)\]\)

Substituting \(\(x_1 = 2\), \(y_1 = 6\)\), and \(\(m = \frac{5}{11}\)\):

\(\[y - 6 = \frac{5}{11}(x - 2)\]\)

To convert this equation into slope-intercept form \((\(y = mx + b\))\), we can simplify it:\(\[y - 6 = \frac{5}{11}x - \frac{10}{11}\]\)

Adding \(\frac{10}{11}\) to both sides:\(\[y = \frac{5}{11}x - \frac{10}{11} + \frac{66}{11}\]\)

Simplifying further:\(\[y = \frac{5}{11}x + \frac{56}{11}\]\)

Therefore, the equation of the altitude passing through point \(P\) is \(\(y = \frac{5}{11}x + \frac{56}{11}\).\)

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Answer:

Answer is 25°

Step-by-step explanation:

let me know if you got it correct

Answer:

-8

Step-by-step explanation:

(7)*(-8) = -56

(-56) - (-8) = -48

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Answer:

f(1) = 2

f(n) = 2 × f(n - 1) , n ≥ 2

Step-by-step explanation:

the point of coordinates (1 , 2) is on the graph

Then

f(1) = 2

…………………………

We notice that :

f(2) = 4

f(3) = 8

f(4) = 16

16/8 = 8/4 = 4/2 = 2/1 = 2

________________________

This means the common ratio

of the geo sequence = 2

Hence ,

f(n) = 2 × f(n - 1)

Answer: f(n) = 2 × f(n - 1) , n ≥ 2

Step-by-step explanation:

To find the volume of the solid obtained by rotating the region bounded by the curves y = 2x and y = 2x about the line y = 2, the method of cylindrical shells can be used.

When rotating the region bounded by the curves y = 2x and y = 2x about the line y = 2, we can visualize the resulting solid as a collection of infinitesimally thin cylindrical shells.

The height of each shell is given by the difference between the lines y = 2 and the curve y = 2x, which is 2 - 2x. The circumference of each shell is given by 2πx since the shell is formed by rotating a line segment of length x.

Integrating the product of the height and circumference over the range of x where the curves intersect (from x = 0 to x = 1), we can find the volume of the solid using the formula V = ∫(2πx)(2 - 2x) dx. Evaluating this integral will yield the volume of the solid.

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Answer:

y = -3/4x

Step-by-step explanation:

\(~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] ~\dotfill\\\\ (4)^{\frac{-4}{2}} \implies (4)^{-2}\implies 4^{-2}\implies \cfrac{1}{4^2}\implies \cfrac{1}{16}\)

Answer:

25

Step-by-step explanation:

So find the number that is a perfect square and 2 times the square root = 10

The number is 25.

Check:

\((x+5)^2=x^2+10x+25\)

Answer:

The answer is 25.

Step-by-step explanation:

25 is a perfect square of 5. When x are added together, they form 10x.

\( {(x + 5)}^{2} \)

\( {x}^{2} + 2(x)(5) + {5}^{2} \)

\( {x}^{2} + 10x + 25\)

Answer:

151°

Step-by-step explanation:

Supplementary angles equal 180°, so all you have to do here is subtract 29 from 180 to get 151° as the supplement.

4.6783x10^3     P.E.M.D.A.S.   exponent before multiplication  10^3 =1000  

1000x4.6783= 4,678.3

For FCFS (First Come, First Served):The requests will be serviced in the following order: 94, 169, 39, 135, 22, 133, 69, 65.

SSTF (Shortest Seek Time First):

The requests will be serviced in the following order: 39, 22, 65, 69, 94, 133, 135, 169

SCAN:

The requests will be serviced in the following order: 39, 65, 69, 94, 133, 135, 169, 22

C-SCAN:

The requests will be serviced in the following order: 94, 169, 39, 135, 22, 133, 69, 65

LOOK:

The requests will be serviced in the following order: 39, 65, 69, 94, 133, 135, 169, 22

C-LOOK:

The requests will be serviced in the following order: 94, 169, 39, 135, 22, 133, 69, 65

In FCFS and C-SCAN, the requests are serviced in the same order as they were received. In SSTF and LOOK, the requests are serviced in an order that minimizes the seek time of the disk head. In SCAN and C-LOOK, the requests are serviced in an order that moves the disk head in one direction (towards higher numbered cylinders in this case) until the end of the disk is reached, and then moves the disk head in the opposite direction to service the remaining requests.

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The value of the missing parts of the given right triangle is given as follows:

A = 46°

a = 13.5

c = 18.7

To determine the missing part of the triangle, the following should be carried out.

The total internal angle of a triangle = 180°

The given angle = 90°+44° + A = 180°

180° = 134°+ A

A = 180-134 = 46°

Using the sine formula;

a/sinA = b/sinB

a =?

A = 46°

b = 13

B = 44°

That is ;

a/sin 46° = 13/sin 44°

a = 0.719339800×13/0.694658370

= 13.5

Using the Pythagorean formula;

c² = a²+b²

c² = ?

a = 13.5

b = 13

c² = 13.5²+13²

= 180.9+169

= 349.9

c = √349.9

= 18.7

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