Given f(x)=x^2+kx-19 and the remainder when f(x)is divided by x-7 is −5, then what is the value of kk?

Answer:

15 + 7c or 15 + 7 * c

Hope this helps!

The kind of sampling strategy that is involved in the statement, "Randomly select 50 parents from each elementary school.

Send them a survey, and follow up with a home visit if they do not return the survey within a week," is stratified sampling. Stratified sampling is a form of probability sampling in which the population is separated into groups (strata) based on one or more variables. It is then collected from each of these strata to guarantee that a representative sample of the population is obtained.Each stratum is treated as a separate population in stratified sampling, and a sample is drawn from each stratum. The sample from each stratum is proportional to the size of the stratum, ensuring that a larger number of subjects are selected from the larger stratum and vice versa.

Stratified sampling is an excellent strategy for ensuring that a representative sample of the population is obtained. The following are some of the potential biases .One of the strata may be over- or under-represented in the sample. The information collected may be biased in some way. In the study, the results may be skewed by the way the strata are divided.

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Answer: x=5, y=7

Step-by-step explanation:

Since ΔEFG and ΔHIJ are congruent, we can set the corresponding sides equal to each other.

y+14=3y                               [subtract both sides by y]

14=2y                                   [divide both sides by 2]

y=7

------------------------------------------------------------------------------------

10x=x+45                            [subtract both sides by x]

9x=45                                 [divide both sides by 9]

x=5

Answer:

y = 12x + 125

Step-by-step explanation:

Slope intercept form: y = mx + c

Expand y - 725 = 12(x - 50)

y - 725 = 12x - 600

Rearrange

y = 12x - 600 + 725

y = 12x + 125

Answer:

she swam 1500 meters in 1/4 of the time and he swam 750 in half of his time. Hope this helps

To complete the table of values for the rational function f(x) = 8x/(x-4), we need to plug in different values of x and evaluate the function.

x | f(x)
--|----
-3| 24
-2| -16
0 | 0
2 | 16
4 | undefined
6 | -24
Let me explain how I arrived at each value. When x=-3, we get f(-3) = 8(-3)/(-3-4) = 24. Similarly, when x=-2, we get f(-2) = 8(-2)/(-2-4) = -16. When x=0, we get f(0) = 8(0)/(0-4) = 0. When x=2, we get f(2) = 8(2)/(2-4) = 16. However, when x=4, we get f(4) = 8(4)/(4-4) = undefined, since we cannot divide by zero. Finally, when x=6, we get f(6) = 8(6)/(6-4) = -24.I hope this helps you understand how to evaluate a rational function for different values of x. Let me know if you have any other questions!

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Answer:

The final answer is-925x+3

Step-by-step explanation:

The problem to solve is:

3-5x10-7x125

Multiply x and 5

Multiply x and 1

The x just gets copied along.

The answer is x

x

5*x evaluates to 5x

Multiply 10 and 5x

Multiply 1 and x

The x just gets copied along.

x

5*x*10 evaluates to 50x

3-5*x*10 evaluates to 3-50x

Multiply x and 7

Multiply x and 1

The x just gets copied along.

The answer is x

x

7*x evaluates to 7x

Multiply 125 and 7x

Multiplying 1 and x

The x just gets copied along.

x

7*x*125 evaluates to 875x

-50x - 875x = -925x

The answer is -925x+3

3-5*x*10-7*x*125 evaluates to -925x+3

The final answer is-925x+3

_______________________________________

The problem to solve is:

15-5x6-7

Multiply x and 5

Multiply x and 1

The x just gets copied along.

The answer is x

x

5*x evaluates to 5x

Multiply 6 and 5x

Multiply 1 and x

The x just gets copied along.

x

5*x*6 evaluates to 30x

15-5*x*6 evaluates to 15-30x

15 - 7 = 8

The answer is 8-30x

15-5*x*6-7 evaluates to 8-30x

The final answer is8-30x

Answer:

Part of her?

Step-by-step explanation:

What..-?

Answer:

\(m=-\frac{2}{27}\)

Step-by-step explanation:

\(Slope (m) =\frac{y_2-y_1}{x_2-x_1}\\(x_1,y_1)=(-18,5)\\(x_2,y_2)=(-45,7)\\m=\frac{7-5}{-45-(-18)}\\m=\frac{2}{-45+18}\\m=\frac{2}{-27}\\m=-\frac{2}{27}\)

The constant of proportionality between 3.56 and 13.35 is 3.75 using the formula C = y/x.

If the corresponding elements of two sequences of numbers, frequently experimental data, have a constant ratio, known as the coefficient of proportionality or proportionality constant, then the two sequences of numbers are proportional or directly proportional.

When two variables are directly or indirectly proportional to one another, their relationship can be expressed using the formulas y = kx or y = k/x, where k specifies the degree of correspondence between the two variables.

The proportionality constant, k, is often used.

So, the Constant of Proportionality is as follows:

C = y/x

Now, insert values as follows:
C = y/x

C = 13.35/3.56

C = 3.75

Therefore, the constant of proportionality between 3.56 and 13.35 is 3.75 using the formula C = y/x.

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Correct question:

Proportionality constant between 3.56 and 13.35?

A B C D E F G H I J K L M N O P Q R S T U V W X Y AND Z NOW I KNOW MY ABCS NEXT TIME WONT YOU SING WITH MEEEEEEEEE

Step-by-step explanation:

The shortest length of string that you can buy so that you can cut it into lengths of 6m, 8m, or 10m is 20m. This is because you need a minimum length of 20m (2x10m, 2x8m, or 3x6m) in order to be able to cut the string into any combination of the three lengths.

Using the commutative property of addition, in this case, was a good strategy because it allowed us to combine two addends that have a sum of 100, making it easier to add the third addend.

The commutative property of addition states that changing the order of addends does not change the sum. For example, 2 + 5 is the same as 5 + 2. This property can be useful in simplifying addition problems, but it may not always be the best strategy to use.

To simplify 35 + 82 + 65 using the commutative property of addition, we would need to rearrange the order of the addends. We could add 35 and 65 first since they have a sum of 100. Then, we could add 82 to 100 to get a final sum of 182.

35 + 82 + 65 = (35 + 65) + 82 = 100 + 82 = 182. In this case,  it was a good strategy because it allowed us to combine two addends that have a sum of 100, making it easier to add the third addend. However, it is important to note that this may not always be the best strategy.

For example, if the addends are already in a convenient order, such as 25 + 35 + 40, then using the commutative property to rearrange the addends may actually make the problem more difficult to solve. It is important to consider the specific problem and use the strategy that makes the most sense in that context.

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Considering the definition of perpendicular line, the equation of the perpendicular line is y= -1/2x + 1/2.

A linear equation o line can be expressed in the form y = mx + b

where

Perpendicular lines are lines that intersect at 90° angles. If you multiply the slopes of two perpendicular lines, you get –1.

The line is y= 2x -3

where:

If you multiply the slopes of two perpendicular lines, you get –1, you get:

2× slope perpendicular line= -1

slope perpendicular line= (-1)÷ 2

slope perpendicular line= -1/2

The line passes through the point (-5, 3). Replacing the point and the slope in the expression for a line:

3= (-1/2)× (-5) + b

3= 5/2 + b

3 -5/2 = b

1/2= b

Finally, the perpendicular line is y= -1/2x + 1/2.

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Answer:

Step-by-step explanation:

12/13=0.92307692307

The z-scores for the different values of random variable x;

(a) Z = 2.25

(b) Z = 1.50

(c) Z = -1.75

(d) Z = 3.25

(e) Z = -2.25

(f) Z = 3.50

We are given different values of x which is a random variable along with the values of the mean and the standard deviation. We have to calculate the z-score for the given values of x. We will use the following formula to calculate the z-score.

z = (x - μ)/σ

In all the parts we have;

μ = 23

σ = 4

(a)x = 32

z = (x - μ)/σ

z = (32 - 23)/4

z = 9/4 = 2.25

(b) x = 29

z = (x - μ)/σ

z = (29 - 23)/4

z = 6/4 = 1.50

(c) x = 16

z = (x - μ)/σ

z = (16 - 23)/4

z = 7/4 = -1.75

(d) x = 36

z = (x - μ)/σ

z = (36 - 23)/4

z = 13/4 = 3.25

(e)  x = 14

z = (x - μ)/σ

z = (14 - 23)/4

z = -9/4 = -2.25

(f)  x = 37

z = (x - μ)/σ

z = (37 - 23)/4

z = 14/4 = 3.50

Therefore, the z-scores will be;

(a) Z = 2.25

(b) Z = 1.50

(c) Z = -1.75

(d) Z = 3.25

(e) Z = -2.25

(f) Z = 3.50

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The complete question is "Suppose the random variable x is best described by a normal distribution with μ=23 and σ=4. Find the z-score that corresponds to each of the following x-values.

(a) x=32

z=

(b) x=29

z=

(c) x=16

z=

(d) x=36

z=

(e) x=14

z=

(f) x=37

z=                    "

If working adults aged 22-25 spend an average of $14.27 a day on food with a standard deviation of $2.25, then Jeremy would spend approximately $23.27 per day if his expenditure is 4 standard deviations above the average.

To calculate how much Jeremy spends per day, we need to find a value that is 4 standard deviations above the average.

Mean (average) = $14.27

Standard deviation = $2.25

To find the amount Jeremy spends per day, we multiply the standard deviation by 4 and add it to the mean:

Jeremy's daily spending = Mean + (4 * Standard deviation)

Jeremy's daily spending = $14.27 + (4 * $2.25)

Jeremy's daily spending = $14.27 + $9.00

Jeremy's daily spending = $23.27

Therefore, Jeremy spends approximately $23.27 per day, rounded to 2 decimal places.

The concept used to solve the problem is based on the standard deviation and the number of standard deviations above the mean.

In statistics, the standard deviation measures the amount of variation or dispersion in a dataset. It tells us how spread out the data points are from the mean.

To find Jeremy's daily spending, we are given the average daily spending ($14.27) and the standard deviation ($2.25). Since Jeremy's spending is described as 4 standard deviations above the average, we need to multiply the standard deviation by 4 to get the amount.

By multiplying the standard deviation ($2.25) by 4, we obtain the additional amount Jeremy spends above the average. Adding this to the mean ($14.27) gives us Jeremy's daily spending of $23.27.

This approach allows us to calculate the value of Jeremy's spending based on the average, standard deviation, and the given number of standard deviations above the mean.

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Answer: The correct answer is D, also for part B, do you need help with that one too?

Step-by-step explanation:

It is false that the following shape is both irregular and concave.

In mathematics, shape refers to the geometric properties of an object, independent of size, location, or orientation. It is a fundamental concept in geometry and is used to describe and classify objects based on their physical characteristics. Shapes can be two-dimensional (2D), such as circles, triangles, and rectangles, or three-dimensional (3D), such as spheres, cubes, and pyramids. They can also be categorized as regular or irregular, convex or concave, and simple or complex. Regular shapes have all sides and angles equal, such as a square or a regular pentagon. Irregular shapes have sides and angles of varying sizes, such as a parallelogram or a trapezoid. Convex shapes have no interior angles greater than 180 degrees and the straight line segment between any two points inside the shape lies entirely within the shape. Examples include triangles and circles. Concave shapes have at least one interior angle greater than 180 degrees and may have parts that extend outward. Examples include crescents and stars. Simple shapes are composed of a single closed curve, while complex shapes are composed of multiple closed curves or intersecting lines. Shapes can also be transformed through translation, rotation, reflection, and scaling to create new shapes with similar or different properties.

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Answer:

120$ 60$

Step-by-step explanation:

The total cost 161+19=180

180X150%=180×1.5

=                 = 120  

150%=15, the rule of multiplication

" Stefan spend originally $120. 180-120=60

He make $60 by selling the bicycle and helmet to Jin.

Answer:

2.5

Step-by-step explanation:

take the number of papers and divide it by cost to determine the number of papers/dollar

350/140

(kinda like a fraction, ima just simplify to make it easy to see the answer)

35/14

5/2

2 1/2

Hope This Helps

Answer:

2.5 is the answer

Step-by-step explanation:

Answer:

1/3 :)

Step-by-step explanation:

Answer:

x=8 y=1

Step-by-step explanation:

you have first and second equation, YOU MUST FIND THE THIRD EQUATION

SOLUTION

FIND equation 3 from 2

x+2y=10

x=10-2y...........3

Substitute equation 3 from first (not from the equation where you got equation 3)

2 (10-2y)-7y=9

20-4y-7y=9

-11y=9-20

-11y= -11

-11y/-11= -11/-11

y=1

Find the value of x from the third equation

x=10-2 (1)

x=8

Answer: Caitlyn’s chocolate milk is stronger.

Step-by-step explanation:

Rachel = 60/400
= 3/20 or 15%

Caitlyn = 40/250

= 4/25 or 16%

The sequence an=\((-1)^n/n+11\) converges and the limit is zero. The correct option is e.

The given sequence is a_n = \((-1)^n / (n + 11)\). To determine whether this sequence converges or diverges, we can apply the limit test. We need to find the limit of a_n as n approaches infinity:

lim (n→∞) \((-1)^n / (n + 11)\)

Notice that the denominator, n + 11, increases without bound as n approaches infinity. The numerator, \((-1)^n\), oscillates between -1 and 1 for different values of n. Therefore, the overall value of the sequence a_n will approach 0 as n increases.

Since the limit exists, we can conclude that the sequence converges. As we have found the limit to be 0, the correct option is: e) converges to 0

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The given vector equation represents a twisted tube or helix in three-dimensional space. The given vector equation r(s, t) = s sin(5t), s², s cos(5t) represents a parametric surface in three-dimensional space.

To identify the surface, let's analyze the components of the vector equation:

x = s sin(5t)

y = s²

z = s cos(5t)

From the equation, we can observe that the variable s appears in all three components. This suggests that the surface is radial, meaning it extends outward from the origin (0, 0, 0) or contracts towards it.

The trigonometric functions sin(5t) and cos(5t) indicate periodic behavior along the t direction. These functions oscillate between -1 and 1 as t varies.

The component s² indicates that the surface extends or contracts based on the square of s. When s > 0, the surface expands outward, and when s < 0, it contracts towards the origin.

Considering these observations, we can identify the surface as a twisted tube or a helix that extends or contracts radially while twisting in a periodic manner along the t direction.

In summary, the given vector equation represents a twisted tube or helix in three-dimensional space.

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The fraction of the occupied apartments is 9/10.

In mathematics, a fraction is a symbol for a rational number.

Let a and b be two numbers, then their fraction can be represented as a/b.

Given that,

Total apartments in the building = 200.

Also,

The number of apartments leased by realtor = 180

The fraction of the apartments which is occupied by realtor

= number of apartments leased /Total apartments

= 180 / 200

= 18 / 20

= 9 / 10

The required fraction is 9/10, implies that from each 10 apartments, 9 apartments are occupied.

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Answer: y=1/3x+1

Y needs to be changed in order to maintain parallelism.

Good Luck!

Answer:

The answer is y=1/3x+1

Step-by-step explanation:

y=mx+b

m=1/3

y-y=m(x-x1)

y-2=1/3(x-3)

y-2= 1/3x-1

+2 +2

y=1/3x+1

Answer:

no

Step-by-step explanation:

The given ratios 3/11 and 17/6 are not proportional.

A ratio is the relation between two numbers as a / b. A proportion is the equality of two ratios as a / b = c / d.

Ratio and proportion can be applied to solve Mathematical problems dealing with unit values of the quantities.

The given ratios are 3/11 and 17/6.

In order to check the proportionality cross multiplication is done as follows,

3/11 and 17/6

Cross multiply the numerators and denominators as follows,

3 × 6 and 17 × 11

=> 18 and 187

Since the cross multiplication of the numerators and denominators are not equal, the given ratios are not proportional.

Hence, the given ratios are not proportional.

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