The stock of Company A lost 4.25% today to $30.64. What was the opening price of the stock in the beginning of the day?

Please hurry!! This is due tonight

y-intercept: \((0, 7)\)

x-intercept: \((-\frac{7}{4},0)\\\)

Determining the test-retest reliability percentage a test is an important step in establishing the validity and usefulness of the test.

The question of whether a person gets the same score on a test if they take it twice is a question of test-retest reliability. Test-retest reliability refers to the consistency of test scores over time when the same test is administered to the same group of individuals. This type of reliability is important because it provides evidence of the stability of test scores over time.

If a test has high test-retest reliability, then individuals who take the test multiple times should receive similar scores each time. Conversely, if a test has low test-retest reliability, then individuals who take the test multiple times may receive different scores each time, which could be due to a variety of factors such as changes in the individual's motivation or test-taking skills, or changes in the test itself.

Therefore, determining the test-retest reliability percentage a test is an important step in establishing the validity and usefulness of the test. It can help researchers and educators evaluate the effectiveness of a test and make informed decisions about its use in various settings.
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Answer:

20

Step-by-step explanation:

LC = 1/2 LH

2LC = LH

2(10) = LH

LH = 20

Answer:

B. 20

Step-by-step explanation:

Because the distance from L to C is ten so the distance from L to H is double of the distance from L to C.

Therefore, the standard error of the mean, σ= 2.53 (approx).

Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen. A sample chosen randomly is meant to be an unbiased representation of the total population.

Given: A simple random sample of 10 items resulted in a sample mean of 25.

The population standard deviation is = 8.

We have to find out the standard error of the mean, σ/Sample Size n,

so we will first calculate σ as;

σ = Population standard deviation = 8

Sample Size n = 10

Substituting values in the formula to find the standard error of the mean, we get;σ/√n = 8/√10 = 2.53 (Round off the value to two decimal places)

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Answer:

\(9 + n\)

Step-by-step explanation:

Well it's an arythmetic sequence, so it will look like:

\(a + d\cdot n\)

Note that the first element is:

\(a + d\cdot 1\)

and the second element is:

\(a + d \cdot 2\)

So the difference between the two gives us d!

\(d = 11 - 10 = 1\)

Now let's find the \(a\):

\(a + d\cdot 1 = 10\\a + 1 \cdot 1 = 10\\a + 1 = 10\\a = 9\)

Answer:

your answer will be 1.1375×10^12

Answer:

1.1375×10^4

Step-by-step explanation:

I already did the test and got 100%

Answer: $104,000

Step-by-step explanation:

34,000+20x(3500)

34,000+70,000

The correct answer is option d. the mode only.

A positively skewed distribution, also known as a right-skewed distribution, is a type of distribution in statistics in which most values are centered around the left tail and the right tail is longer. The distribution that is positively skewed is the exact opposite of one that is negatively skewed.

Positively skewed data differ from normally distributed data. The following inequality can be used to represent the general relationship between the central tendency measurements in a positively skewed distribution:

                        Mean  >  Median >  Mode  

Here

The peak of the distribution corresponds to the mode only

Therefore,

The correct answer is option d. the mode only.

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The quadratic function of best fit for the data is given as follows:

h(t) = -0.004t² +1.032t + 5.667.

Using this function, the initial height of the shot is of 5.67 feet.

The input and the output of the data are given as follows:

As the input increases, the output increases and then it decreases. Since this behavior of increase/decrease is not uniform over the entire domain of the relation, a quadratic function best models this data.

To find the quadratic function of best fit, we insert the points (input,output) into a calculator, from point (20, 25) to point (200,64).

Inserting the points into the calculator, the function is defined as follows:

h(t) = -0.004t² +1.032t + 5.667

The height in which the shot started its flight is given by the height when t = 0, hence:

h(0) = -0.004(0)² + 1.032(0) + 5.667 = 5.667 feet = 5.67 feet (rounded to the hundredths place).

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The inequality that satisfies the number of hours of volunteer work that saul could complete each month to meet his goal is 21 hours.

An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made.

Different types of inequalities are represented by a variety of notations, including:

The symbol a <  b indicates that a is smaller than b.

When a > b is used, it indicates that an is bigger than b.

Given,

Hours Saul plans to volunteer in the 9-month period = 225 hours

Also,

Hours of volunteering he has already completed = 36 hours

=> Number of hours left = 225 - 36 =189 hours

Number of months= 9

=> Minimum number of hours he has to volunteer per month

=> \(\frac{Number of hours left}{Number of months}\)

=>\(\frac{189}{9}\\ 21 hours\)

=>Minimum number of hours saul has to volunteer per month ≥ 21 hours

Therefore, The number of hours of volunteer work that saul could complete each month to meet his goal is 21 hours.

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Answer: The answer is x(x^4+7x^3y^3–8y^4+14y).

Step-by-step explanation:

39 subjects were tested in this simple one-way ANOVA.

The df for F distribution is (treatment df, error df)

Using given information

Treatment df = 7

Error df = 31

Total df= 7+31 = 38

Again, total df = N-1, N= number of subjects tested

Then, N-1 = 38

=> N= 39

One-way ANOVA is typically used when there is a single independent variable or factor and the goal is to see whether variation or different levels of that factor have a measurable effect on the dependent variable.

The t-test is a method of determining whether two populations are statistically different from each other, and ANOVA determines whether three or more populations are statistically different from each other.

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The table represent a direct proportional relation.

In this question we find a table with four pairs of elements that have to be tested with respect to the direct proportional formula, which is defined below:

y = k · x

Where:

The table represents a direct proportional relation if and only if there is only one constant of proportionality:

k₁ = 12 / 3

k₁ = 4

k₂ = 20 / 5

k₂ = 4

k₃ = 8 / 2

k₃ = 4

k₄ = 32 / 8

k₄ = 4

As k₁ = k₂ = k₃ = k₄, the table represent a proportional relationship.

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Answer:

2 and 3

If you want to get complicated, then 2.39 and 2.61.

Step-by-step explanation:

5 = x + y

5 = 2 + 3

5 = 5

Answer:

To solve this system of equations, we need to find the x-values where the two equations intersect on a graph.

The first equation, y = x + 2, has a y-intercept of 2 and a slope of 1. This means that for every increase of 1 in x, y increases by 1. We can plot this line on a coordinate plane by plotting the y-intercept at (0, 2) and then using the slope to find another point, such as (1, 3), and drawing a line through those two points.

The second equation, y = 2x + 1, has a y-intercept of 1 and a slope of 2. This means that for every increase of 1 in x, y increases by 2. We can plot this line on the same coordinate plane by plotting the y-intercept at (0, 1) and then using the slope to find another point, such as (1, 3), and drawing a line through those two points.

Now we can see where the two lines intersect on the graph. This occurs at the point (−1,1). Therefore, the first answer choice, "x = -1 and x = 2," is not correct.

The second answer choice, "x = 1 and x = 2," is also not correct, as we can see from the graph that the two lines do not intersect at x = 1.

The third answer choice, "x = 0 and x = 1," is also not correct, as we can see from the graph that the two lines do not intersect at x = 0.

The only remaining answer choice is "x = -2 and x = -3," and we can see from the graph that the two lines do intersect at x = -2. Therefore, the correct answer is "x = -2 and x = -3."

If the airplane and ball maintain their constant speeds, they will collide at a time 53.73 seconds.

To determine whether the airplane and ball collide, we need to find out whether their heights are equal at some point in time. That is, we need to solve the equation:

15t = -1612 + 45t

Simplifying this equation, we get:

30t = 1612

t = 53.73 seconds

Therefore, if the airplane and ball maintain their constant speeds, they will collide after 53.73 seconds.

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Answer:

852 inches square

Step-by-step explanation:

2×(16×15 + 16×6 + 15×6)

Answer:

652 in²

Step-by-step explanation:

The formula is 2(wl+hl+hw)

h is height

w is width

l is length

Use PEMDAS/BIDMAS/BODMAS (do the parentheses then multiply it)

326*2 = 652

add your units

652 in^2

(a)   The standard time for the work cycle is 3485.39 min.

(b)   The worker's efficiency is approximately 8505.6%.

(c)    The worker's performance on the portion of the cycle he controlled is approximately 1.96%.

(a)    To determine the standard time for the work cycle, we need to consider the allowances for personal and machine-related factors.

Given:

Normal time of the work cycle (T) = 5.39 min

Operator-controlled portion (O) = 0.84 min

PFD allowance factor (PFD) = 16% (0.16)

Machine allowance factor (MAF) = 3000

The total allowances can be calculated as follows:

Total Allowances = (PFD allowance factor * machine allowance factor) + machine allowance factor

= (0.16 * 3000) + 3000

= 480 + 3000

= 3480

Standard time for the work cycle (ST) = T + Total Allowances

= 5.39 + 3480

= 3485.39 min

Therefore, the standard time for the work cycle is 3485.39 minutes.

(b)    To calculate the worker's efficiency, we need to determine the number of units produced and compare it to the standard time.

Given:

Number of units produced during an 8-hour shift = 85

Standard time for the work cycle = 3485.39 min

Shift duration = 8 hours = 480 min

Total units produced during the shift = (Number of units produced per cycle) * (Number of cycles per shift)

= 85 * (480 / T)

= 85 * (480 / 5.39)

= 85 * 89.0

= 7565

Efficiency = (Total units produced / Total units that could be produced) * 100

= (7565 / (480 / T)) * 100

= (7565 / (480 / 5.39)) * 100

= (7565 / 89.0) * 100

= 8505.6

Therefore, the worker's efficiency is approximately 8505.6%.

(c)    To determine the worker's performance on the portion of the cycle he controlled, we need to calculate the actual time spent on the operator-controlled portion and compare it to the standard time.

Given:

Total time lost due to personal needs and delays = 42 min

Operator-controlled portion (O) = 0.84 min

Actual time spent on the operator-controlled portion = O + Total time lost

= 0.84 + 42

= 42.84 min

Worker's performance = (Standard time for operator-controlled portion / Actual time spent on operator-controlled portion) * 100

= (O / (O + Total time lost)) * 100

= (0.84 / (0.84 + 42)) * 100

= (0.84 / 42.84) * 100

= 1.96

Therefore, the worker's performance on the portion of the cycle he controlled is approximately 1.96%.

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Answer:

y=6x-4

(dark blue)

Step-by-step explanation:

x=0 y=-4

y=6x-4

y=6(0)-4

y=-4

Answer:

10.35 mph

Step-by-step explanation:

63,756/70 ft/min × (1 mile)/(5280 ft) × (60 min)/(hour) =

= 10.35 mph

Answer:

A, C and E.

Step-by-step explanation:

36 = 6^2

100 = 10^2

25 = 5^2.

Answer:

D (195,500,000)

Step-by-step explanation:

8.5 mil times 23 equals D

The number of people living in Brazil that year was approximately  195,500,000 people. The answer is the last option 195,500,000 people

From the question, we are to determine the number of people living in Brazil in that year

From the given information,

Brazil land area = 8.5 million square kilometers = 8500000 km²

Brazil population density = Peru population density = 23 people /km²

From population density formula,

\(Population\ density = \frac{Number \ of \ people}{Land\ area}\)

Then,

Number of people = Population density × Land area

Therefore,

Number of people living in Brazil = 8500000 × 23

Number of people living in Brazil = 195,500,000 people

Hence, the number of people living in Brazil that year was approximately  195,500,000 people. The answer is the last option 195,500,000 people

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Answer:

Step-by-step explanation:The sum of the measures of the angles in a triangle is always 180 degrees. So, we can set up an equation and solve for x:

36 + (6x+3) + 87 = 180

Combine like terms:

126 + 6x = 180

Subtract 126 from both sides:

6x = 54

Divide both sides by 6:

x = 9

Therefore, the value of x is 9.

To reverse the order of integration, we need to rewrite the limits of integration in terms of the other variable.
The value of the given integral by reversing the order of integration is (5/12)(\(e^{24}\) - 1).

The given integral is ∫∫ \(5e^{(2x)}\) dx dy, where the limits of x are from 0 to 4 and the limits of y are from 0 to 3y.
To integrate with respect to y first, we need to express the limits of y in terms of x.
From the limits of y given, we have 0 ≤ y ≤ 3y, which simplifies to 0 ≤ y.
Now we need to find the upper limit of y. To do this, we set the expression for the upper limit equal to the constant 12, which is the upper limit of x.
So we have 3y = 12, which gives y = 4.
Thus, the limits of integration become ∫∫ \(5e^{(2x)}\) dy dx, where the limits of y are from 0 to 4 and the limits of x are from 0 to 3y.
Now we can integrate with respect to y:

∫∫ \(5e^{(2x)}\) dy dx = ∫ 0^4 ∫ 0^(3y) \(\int\limits^4_0 \int\limits^{(3y)}_0 5e^{(2x)} dx dy\)
= \(\int\limits^4_0  [5/2 e^{(2x)}]_0^{(3y)} dy\)
= \(\int\limits^4_0  [5/2 (e^{(6y)} - 1)] dy\)
= \([5/12 (e^{(6y)} - 1)]_0^4\)
= \((5/12)(e^{24} - 1)\)
Note that the order of integration can be reversed if the integrand is continuous on a rectangular region that contains the original region of integration.

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Using property of independent events, there should be 12 sophomore girls present in the class.

If the occurrence of one event has no bearing on the likelihood that the other will also occur, then the two events are independent. The likelihood that both occurrences A and B will occur is defined mathematically as being equal to the product of the probabilities of A and B (i.e., P) (A and B)

Given,

There are twelve freshmen boys, sixteen freshmen girls, and nine sophomore boys

and two events are independent if,

p(A ∩ B) = P(A). P(B)

Let sophomore girls present = x

               Freshmen       sophomore        Total

Boys              12                     9                    21

Girls               16                     x                    16 + x

Total              28                 9 + x                37 + x

P(Boys) = \(\frac{21}{37 + x}\)

P(Freshmen) = \(\frac{28}{37 + x}\)

P(Boys ∩ Freshmen) = \(\frac{12}{37 + x}\)

Using p(A ∩ B) = P(A). P(B),

\(\frac{12}{37 + x} = \frac{21}{37 + x} \times \frac{28}{37 + x}\)

\(12(37 + x) = 21 \times 28\\x = 12\)

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A quart contains 32 ounces. This is true for both dry and liquid ounces.

In the United States, the conventional system of measurement—in which dry measurements are reported in weight ounces and volume measurements are given in fluid ounces—is frequently employed. Four cups, two pints, or 32 fluid ounces make up a quart.

It's crucial to keep in mind that the density of a component might affect how much an ounce weighs when weighing dry ingredients.

For instance, due to the difference in their densities, one fluid ounce of flour will weigh less than one fluid ounce of sugar. Nonetheless, regardless of the density, each fluid ounce has a standard weight when measuring volume using fluid ounces.

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The question is -

what are ounces in a quart?

Answer:

Option b

Step-by-step explanation:

Points (2, 3) and (0, 1)

point (2,4)

These are covered in option b.