PLEASE HELP 50 POINTS

The correct answer is results of the memory test.

Given that,

Dr. Huang asked the healthy volunteers in a group to read a chapter for an hour. The other half of the attendees spent 15 minutes studying. Dr. Huang next asked participants to recall specifics from the paragraph in a test.

To find :what was the dependent variable ?

It is something on which other elements depend. The test score for a instance, may be the dependent variable because it could vary based on a number of variables, including how much you studied, how much sleep you got the night before the test, and even how hungry you were.

Therefore, the correct answer is results of the memory test.

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The answer is 1.95 or 1.95 = 1.95. The probability that a randomly selected student is taking a math class or an English class can be found using the formula for the union of two events:

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

where A is the event of taking a math class and B is the event of taking an English class.

Given that 66% of students are taking a math class, P(A) = 0.66. Given that 74% of students are taking an English class, P(B) = 0.74. Given that 45% of students are taking both, P(A and B) = 0.45.

Therefore, the probability that a randomly selected student is taking a math class or an English class can be calculated as follows:

P(A or B) = 0.66 + 0.74 - 0.45 = 1.95

Rounding to 2 decimal places, the answer is 1.95 or 1.95 = 1.95.

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An equation for Windy Kite's total cost, y, in terms of the number of kites purchased, x, is y = 2x + 20.

An equation for Kites-R-Fun's total cost, y, in terms of the number of kites purchased, x, is y = 4x + 8.

Based on the table, if the Alaskan customer wants to buy 4 kites, Kites-R-Fun charges the least.

If the Alaskan customer wants to buy 10 kites, Windy kites charges the least.

The solution to the system of equations is (6, 32)

In order to write a linear equation to describe this situation, we would a assign variable to the number of kites purchased and the total cost respectively, and then translate the word problem into a linear equation as follows:

Since Wendy charges $2 per kite and a flat rate of $20 for shipping, a linear equation that models the total cost is given by:

y = 2x + 20

When x = 4, the total cost for Windy kites is given by:

y = 2(4) + 20

y = $28.

When x = 7, the total cost for Windy kites is given by:

y = 2(7) + 20

y = $34.

When x = 10, the total cost for Windy kites is given by:

y = 2(10) + 20

y = $40.

For Kites-R-Fun, a linear equation that models the total cost is given by:

y = 4x + 8

When x = 4, the total cost for Kites-R-Fun is given by:

y = 4(4) + 8

y = $24.

When x = 7, the total cost for Kites-R-Fun is given by:

y = 4(7) + 8

y = $36.

When x = 10, the total cost for Kites-R-Fun is given by:

y = 4(10) + 8

y = $48.

Lastly, we would use an online graphing calculator to plot the system of linear equations as shown in the graph attached below.

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The correct association for each correlation coefficient is as follows:

-0.86: Strong association, 0.52: Moderate association, 0.93: Strong association, -0.66: Moderate association, -0.01: Weak association.

Correlation is a statistical concept that measures the relationship between two or more variables. It is a measure of the degree of association between variables, which can range from -1 to 1. If the correlation between two variables is strong and positive, this means that as one variable increases, the other variable also increases. Conversely, if the correlation is strong and negative, then as one variable increases, the other variable decreases. A correlation of 0 means that there is no association between the variables.

In order to calculate the correlation coefficient, statistical methods such as Pearson's correlation or Spearman's rank correlation are used. The correlation coefficient is a single number that indicates the strength and direction of the relationship between the variables. It is important to note that correlation does not imply causation, and it is possible for two variables to be highly correlated without any causal relationship between them.

The correlation coefficient represents the strength of the relationship between two variables. A positive correlation coefficient implies that the two variables have a positive link, whereas a negative correlation value shows that the two variables have a negative association. The size of the correlation coefficient shows its strength: a coefficient of 0.86 suggests a high relationship between the two variables, whilst a coefficient of 0.52 indicates a moderate relationship. A coefficient of 0.93 suggests a stronger relationship, whilst a value of -0.66 shows a somewhat negative relationship between the two variables. Finally, a correlation value of -0.01 shows that the two variables have a very weak relationship.

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Answer: [tex]5*7[/tex]

Work: 25 = 5 × 5 35 = 5 × 7

Hope it helps!

The lowest common denominator Skyla could use to rewrite the fractions is 280.

Value is the relative what merit or important of something it can referred to an intangible concept such as a person principle or a tangible object such as rare coin. Will you very widely across culture society individual it can even very within the same individual overtime. Value is often used to describe the worth of something in terms of its usefulness beauty. Will you can also refer to the moral or ethical standard of a person or group.

To get this value, she would need to find the least common multiple of the denominators, which are 17, 20, 56, 8, and 15. To do this, she would list out the prime factors of each denominator and then multiply the highest number of each prime factor together.

17: 1 x 17
20: 2 x 10
56: 2 x 2 x 7
8: 2 x 2 x 2
15: 3 x 5

The highest number of each prime factor is 17, 10, 7, 2, and 5, so the least common multiple of the denominators is 17 x 10 x 7 x 2 x 5, which equals 280. This would be the lowest common denominator she could use to rewrite the fractions.

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Answer:

Step-by-step explanation: I do know bro is, sorry

The number of years is given by the equation T = 10 years

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the number of years to qualify to receive Social Security benefits when Stacy retires be T

Now , the equation will be

The present age of Stacy = 46 years

The maximum number of credits each year = 4 credits

As to earn the social security benefits, she needs to earn 40 credits

So , the number of years = 40 credits / maximum number of credits each year

Substituting the values in the equation , we get

The number of years to qualify to receive Social Security benefits when Stacy retires T = 40/4

On simplifying the equation , we get

The number of years to qualify to receive Social Security benefits when Stacy retires T = 10 years

Hence , the number of years is 10 years

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The coordinate point of C is (4.5, 6).

When a point on a line segment divides it into two segments, the formula used to determine the coordinates of that point is known as the section formula. Let us say, we have a point P(x,y) that divides the line segment with marked points as A (x1,y1) and B(x2,y2). To find the coordinates, we use the section formula, which is mathematically expressed as:

P(x, y) = P(x, y) = [(mx₂+nx₁)/(m+n), (my₂+ny₁)/(m+n)]

Given that, Philip travels from town A, with coordinates (1, 6) to town B, with coordinates (7, 6).

The ratio of Philip's Bruces rates is 7:5.

Substitute (x₁, y₁)= (1, 6), (x₂, y₂)= (7, 6) and m:n=7:5 in the section formula, we get

C(x, y) = [(7×7+5×1)/(7+5), (7×6+5×6)/(7+5)]

C(x, y) = (54/12, 72/12)

C(x, y) = (4.5, 6)

Therefore, the point is (4.5, 6).

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Answer:

Step-by-step explanation:

Answer:

The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown".

Answer:

30

Step-by-step explanation:

triangle interior angles sum = 180

so x+2x-15+105 = 180

so 3x = 180-90 = 90

x =30

Answer: 18 years.

Step-by-step explanation:

Turn into an equation:

y=250(1.08)^x

see what number you plug in for x makes y 1000,

and that number is 18.

The investment compounded periodically will be worth $14,054.52, which is $596.10 more than the investment compounded annually.

To calculate the future value of the investment compounded periodically, we need to use the formula:

FV = P * (1 + (r / n))^(n * t)

where:

P = $6,000 (principal)

r = 6% (annual interest rate)

n = 12 (number of interest periods per year)

t = 17 (number of years)

Plugging in the values, we get:

FV = $6,000 * (1 + (0.06 / 12))^(12 * 17) = $6,000 * (1 + 0.005)^204

FV = $6,000 * (1.005)^204

FV = $14,054.52

So, the investment compounded periodically will be worth $14,054.52 after 17 years.

To calculate the future value of the investment compounded annually, we use the same formula but with n = 1 (one interest period per year):

FV = $6,000 * (1 + 0.06)^17

FV = $6,000 * (1.06)^17

FV = $13,458.42

So, the investment compounded annually will be worth $13,458.42 after 17 years.

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The error kelly made was that sin f is h/e and g = EF

The area of a triangle is given by 1/2 base × height. In the triangle base is g and height is h

In trigonometry, sin(tetha) =[opp/ hypotenuse)

cos (tetha) = adj/hypotenuse

tan(tetha) = opp/ hypotenuse

sinF = e/h

sinE = h/f

this two does not have g at all. so we either use tan or cos.

g is divided into two, let's name it g1 and g2

cos F = g1/e

cos E = g2/f

g1 = e(cos F)

g2 = f(cos E)

g = g1+g2

g = e(cos F) + f(cos E)

A = 1/2bh

A = 1/2 ×( e( cos F) + f(cos E) ) h

Therefore the actual value of the area is /2 ×( e( cos F) + f(cos E) ) h

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The simplified solution is -6+4y-10m.

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

here, we have,

-2/4 (12 - 8y + 20m)

now, dividing & multiplying we get,

⇒ -2(3-2y+5m)

⇒-6+4y-10m

Hence, The simplified solution is -6+4y-10m.

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Answer:

did this for points

oci hcduibghvfv

Step-by-step explanation:

:)

Answer:

3.88

Step-by-step explanation:

0.97×4 = 3.88 just multiply

Answer: 3.88

So the grapes on the sale is 0.97 per pound and he wants to purchase 4 pounds. In this situation were going to multiply in order to find how many pounds of grape he spent.

0.97*4=3.88. So he spends 3.88 pounds of grapes.

Step-by-step explanation:  hope this helps!! :)) Mark me brainliest! :))

The given statement in the form of inequality is given as -

c - 6 > 24.

An inequality is used to make unequal comparisons between two or more expressions. For example → ax + b > c

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is the statement as -

"Six subtracted from c is greater than 24"

We can write the inequality as -

c - 6 > 24

Therefore, the given statement in the form of inequality is given as -

c - 6 > 24.

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{Question in english -

Six subtracted from c is greater than 24}

A 21-ft ladder is leaning against a building. if the base of the ladder is 9 ft from the base of the building, then the angle of elevation of the ladder will be: α = 71° .

From trigonometry we have:

cos α = 7/21

7 = 21 cos(α)

and:

α = arc cos(7/21) = 70.5 ≈ 71∘

The angle of elevation is the angle between the horizontal line of sight and the article.

Considering that, A 21-ft stepping stool is resting up against a structure. Assuming the foundation of the stepping stool is 9 ft from the foundation of the structure,

Subsequently, Angle of Elevation is x = 71° and the Level of stepping stool arriving at the wall = 21 ft .

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The measure of side FD is given as follows:

FD = 81.5.

Similar triangles are triangles that share these two features presented as follows:

Hence the proportional relationship measuring the side lengths is given as follows:

FD/23 = 39/11.

Applying cross multiplication, the measure of side FD is obtained as follows:

11FD = 39 x 23

FD = 39 x 23/11

FD = 81.5. (rounded to the nearest tenth).

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The probability that a randomly selected student is taking a math class or an English class is 0.79.

Using the formula for the union of two events, P(A or B) = P(A) + P(B) - P(A and B), where A is the event "taking a math class" and B is the event "taking an English class", we can find the desired probability:

P(A or B) = 0.76 + 0.75 - 0.72 = 0.79

So,  "0.79" (which is given in upto two decimal places) is the probability that a randomly selected student is taking a math class or an English class.

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As per the permutation concept the number of ways to seat 5 boys, 5 girls, and 1 (or 2) parent in a circular arrangement around a table such that no boy is to sit next to a boy and no girl is to sit next to a girl is 72,000.

The concept of permutation comes into play when we need to find the number of ways to arrange a set of elements.

We can use the formula for circular permutation, which is (n-1)! where n is the number of elements. In this case,

=> n = 11 (5 boys + 5 girls + 1 parent).

Therefore, the total number of permutations possible is

=> (11-1)! = 10!.

Next, we need to find the number of permutations possible for arranging the boys and girls.

Since each boy or girl can be placed in 5! ways (5 possible positions), the number of permutations for arranging the boys and girls becomes

=> 5! * 5! = 120 * 120 = 144,000.

Therefore, we need to divide the above result by 2. The final answer is

=> 144,000 / 2 = 72,000.

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A graph of the solution to this system of equations on a coordinate plane is shown in the image attached below.

This system of equations has: A. one solution.

In order to to graph the solution to the given system of equations on a coordinate plane, we would use an online graphing calculator to plot the given system of equations and then take note of the point of intersection;

7x - 6y = -12     ......equation 1.

x - y = -1     ......equation 2.

Based on the graph (see attachment), we can logically deduce that the solution to the given system of equations is the point of intersection of the lines on the graph representing each of them, which lies in Quadrant III and it is given by the ordered pair (-6, -5).

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Both equations in a system of linear equations have y-intercepts at (0,2) but it is not possible for this system to have only one solution because it depends on another point as well. Option C

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation.

Given :Both equations in a system of linear equations have y-intercepts at (0,2).

The following steps can be used in order to determine the system have only one solution or not:

According to the given data, both equations in a system of linear equations have y-intercepts at (0,2).

The equation of a line is given by: [tex]\frac{y-y_{1} }{x-x_{1} } = \frac{y_{2} - y_{1} }{x_{2} -x_{1} }[/tex]

From the above steps, it can be concluded that it does not say that the system to have only one solution because it depends on another point as well.

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The resulting disjoint sets after the operation union({7, 4}) would be: {5, 7, 9, 1, 11, 4, 2, 3, 6, 8, 10}.

The union of two sets A and B is denoted by A ∪ B and is defined as the set of all elements that are either in A or in B or in both. Therefore, the resulting disjoint sets after the operation union({7, 4}) would be:

{5, 7, 9, 1, 11, 4, 2, 3, 6, 8, 10}.

To calculate the union, we can use the following formula:

A ∪ B = {x : x ∈ A or x ∈ B}

Therefore, the union of {7, 4} can be calculated as:

{7, 4} ∪ {7, 4} = {x : x ∈ {7, 4} or x ∈ {7, 4}}

= {7, 4}

Therefore, the resulting disjoint sets after the operation union({7, 4}) would be: {5, 7, 9, 1, 11, 4, 2, 3, 6, 8, 10}.

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There are 363600 ways to arrange 6 people in a row from a group of 10 people, where the bride and the groom are among these 10 people if the bride must be in the picture.

There are 2 possibilities for the position of the bride: either she is first in the row, or she is not first in the row.

If the bride is first in the row, then there are 5 people to choose from for the second person, 4 people to choose from for the third person, and so on, until there is only 1 person left to choose from for the last person in the row. Thus, there are 5! (5 factorial) ways to arrange the 5 people after the bride.

If the bride is not first in the row, then there are 9 people to choose from for the first person, 8 people to choose from for the second person, and so on, until there is only 1 person left to choose from for the last person in the row. Thus, there are 9! (9 factorial) ways to arrange the 9 people before the bride.

Therefore, the total number of ways to arrange the 6 people in a row is 5! + 9! = 720 + 362880 = 363600.

So, in total, there are 363600 ways to arrange 6 people in a row from a group of 10 people, where the bride and the groom are among these 10 people if the bride must be in the picture.

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--The given question is incomplete; the complete question is

"In how many ways can a photographer at a wedding arrange 6 people in a row from a group of 10 people, where the bride and the groom are among these 10 people if the bride must be in the picture."--

Please find attached the graph of the linear equation that represents the situation, created with MS Excel

The domain is; {0, ∞)

The domain is the set of the possible distances, in miles, to which Pick-M-Up Towing Company tows a car

The range is; [40, ∞)

The range is the set of the possible total cost, in dollars, it takes to tow a car

A linear equation is an equation that has a straight line graph.

The possible values in the table, obtained from the table in a similar question posted online are presented as follows;

x(miles)    [tex]{}[/tex]      y(cost)

0    [tex]{}[/tex]                 $40

5    [tex]{}[/tex]                 $48.50

10     [tex]{}[/tex]               $57.00

The first difference is; 57 - 48.5 = 48.5 - 40 = 8.5

Therefore, the first difference is a constant, the relationship is a linear equation, with a slope, m, which can be found as follows;

m = 8.5/(5 - 0) = 1.7

The equation in point-slope form is therefore;

y - 40 = 1.7·(x - 0)

The above equation is in the form of a slope-intercept form of a linear equation, y = m·x + c, where the slope, m = 1.7, and the y-intercept, c = 40

The y-intercept is 40. The meaning of the y-intercept is the amount the towing company charges to hook the car.

The domain is the set of possible x-values, which is the possible distances to which the car is towed.

The range, which is the possible output or y-value, is the set of the possible cost to tow the car, which can be presented as follows;

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Answer:

22500

Step-by-step explanation:

This is because 75 x 60 = 4500 (that gives us the beats per hour)

4500 x 5 = 22500 (that gives us the beats per 5 hour)

Answer:

5×60=300mins

1min=75heartbeat

300min=300×75=22500heartbeat

Answer:

tyizigxigxhk hkohxoxoxhhxohxkhk oh h kun h kun up up h kun go to

Step-by-step explanation:

Mr. Kama and Mrs. Ronoh meet at 26.72 km away from point R.

The relative speed is the net speed of two different objects with respect to each other.

If two objects move in the same direction we take the difference between their speeds.

If two objects move in the opposite direction we take the sum of their speeds.

Given, Mr. Kama left town 'S' at 6:00 am and travels at an average speed of 24 km/hr towards 'R',

And Mrs. Ronoh left town R to town IS 10 minutes later and arrived at

7:00 am.

So, The speed of Mrs. Ronoh is 42 km/hr as the distance between RS is

42 km.

Therefore, The point at which they meet is,

= (42/(24 + 42))×42.

= 0.63×42 = 26.72 km from the point 'R' as Mrs. Ronoh is faster.

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