now find all real solutions for the real cubic x 3 − 3x 2 − 36x 56 = 0 by first depressing and then solving the resulting equation via cardano. how many real solutions did you get?

Answer:

Btw the result are this: 70% = 0.7500 = 0.78% = 0.08 In Oak Grove

Step-by-step explanation:

The total cost of the mattress is $162 after markdown 70%  and sales tax 8%

Given :

Erik bought a mattress that was marked down 70% from an original price of $500

Original price is 500 dollars

marked down that is discount percentage is 70%

Lets find the discount amount using original price

markdown percentage times original price

\(discount = \frac{70}{100} \cdot 500=350\)

cost of mattress after discount is 500-350= 150 dollars

sales tax is 8%

now we find the tax amount for 150 dollars

\(tax=150 \cdot \frac{8}{100} \\tax = 12\)

tax is 12 dollars

the total cost of the mattress= cost of mattress +tax

the total cost of the mattress=150+12=162

the total cost of the mattress is $162

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Answer:

Step-by-step explanation:

41. The product of 0.25 and 0.4 is 0.100, with three decimal places. Trailing zeros are usually dropped--except when they are used to indicate significant digits in a calculation. Hence, the usual presentation of the result is ...

  0.25 × 0.4 = 0.1

__

42. To find total beats, multiply beats per second by seconds.

  (52 beats/second)(35.5 seconds) = (52)(35.5) beats = 1846 beats

The hummingbird's wings will beat 1846 times in 35.5 seconds.

__

43. To find total sales for the week, multiply the price of a tin of popcorn by the number sold in the week (42).

Answer:

41) 0.25 × 0.4 = 0.1

It has only one decimal place in the product because 0.25 has two significant figures and 0.4 has one significant figure. When multiplying, the product will always match with the number that has the least amount of significant figures. Since 0.4 has one significant figure, the product, 0.1, will also have one significant figure.

42) 35.5 s × 52 times/s = 1,846 times

43) 42 tins × $9.25/tin = $388.50

Hope that helps.

To calculate the reliability of the bank loan processing system with backup components, we can use the concept of series-parallel system reliability.

In the original system, the three components are connected in series. To calculate the overall reliability of the system, we multiply the reliabilities of the individual components:

R_system = R_1 * R_2 * R_3 = 0.82 * 0.991 * 0.98 ≈ 0.801

So, the reliability of the bank loan processing system without backup components is approximately 0.801.

Now, if each of the three components has a backup with a reliability of 0.80, we have a parallel configuration between the original components and their backups. In a parallel system, the overall reliability is calculated as 1 minus the product of the complement of individual reliabilities.

Let's calculate the reliability of each component with the backup:

R_1_with_backup = 1 - (1 - R_1) * (1 - 0.80) = 1 - (1 - 0.82) * (1 - 0.80) ≈ 0.984

R_2_with_backup = 1 - (1 - R_2) * (1 - 0.80) = 1 - (1 - 0.991) * (1 - 0.80) ≈ 0.9988

R_3_with_backup = 1 - (1 - R_3) * (1 - 0.80) = 1 - (1 - 0.98) * (1 - 0.80) ≈ 0.9992

Now, we calculate the overall reliability of the system with the backups:

R_system_with_backup = R_1_with_backup * R_2_with_backup * R_3_with_backup ≈ 0.984 * 0.9988 * 0.9992 ≈ 0.981

Therefore, the reliability of the bank loan processing system with backup components is approximately 0.981.

Comparing the two scenarios, we can see that introducing backup components with a reliability of 0.80 has improved the overall reliability of the system. The total reliability increased from 0.801 (without backups) to 0.981 (with backups). Having backup components in a parallel configuration provides redundancy and increases the system's ability to withstand failures, resulting in higher reliability.

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Answer:

I believe it should be

4 : 1 : 200

Step-by-step explanation:

Answer:

259.5

Step-by-step explanation:

8.1*12=97.2
Area of trapiezium = 1/2(b+a)h
(2.8+8.1)=10.9
10.9*3/2=16.35
16.35*2=32.7
2.8*12=33.6
33.6+32.7+97.2=163.5
4*12*2=96
163.5+96=259.5

Answer:

2

Step-by-step explanation:

Two-sample t-test would be the hypothesis test based on the scenario created.

A statistical test called the two-sample t-test is used to compare the means of two different independent groups to see if there is a statistically significant difference between them. It is frequently applied when contrasting the means of two various treatment groups or populations. To establish the statistical significance of the test, a t-value is calculated and then compared to a critical value derived from the t-distribution.

The scenario provided are two different independent group, to see if there is statistically significant difference between them, two sample t-test will be used.

The following steps are taken when conducting two sample t-test;

1. Formulate the null and alternative hypothesis

2. Collect and organize the data

3. Check assumptions

4. Calculate the test statistic

5. Determine the critical value and calculate the p-value

6. Make a decision

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We can use a two-sample t-test to compare the two sample means.

The appropriate hypothesis test to determine whether the means of two populations differ significantly is the two-sample t-test.

The two-sample t-test is used to compare the means of two independent groups.

The hypothesis testing of the two independent means is performed using the following hypotheses:

H0: µ1 = µ2 (null hypothesis)

H1: µ1 ≠ µ2 (alternative hypothesis)

Here, µ1 and µ2 are the population means of two different populations and are unknown. We use sample means x1 and x2 to estimate the population means.

In this scenario, the sample sizes of the two populations are greater than 30.

Therefore, we can use a two-sample t-test to compare the two sample means.

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Answer:

Step-by-step explanation:

121 is an outlier.  it's a data point that lies outside of the rest.  All the other numbers are clumped around 70-79 and 121 is so far off

Answer:

29 units

Step-by-step explanation:

The midsegment of a trapezoid is the average of the top and bottom sides.

(25+33)/2 = 29

Answer:

measure of midsegment EF is 29

Step-by-step explanation:

basically just find the average of the two numbers

25+33/2 = 29

Answer:

\((12 - i) - (8 - 8i)\)

from the general complex expression given: a + bi

isolate the real values and imaginary values;

\( = (12 - 8) + (8i - i) \\ \\ = { \boxed{ \boxed{4 + 7i}}}\)

Answer:

Step-by-step explanation:

Method to solve system by elimination :

Let me give an example :

a(x) + b(y) = c

d(x) + e(y) = f

multiply equation 1 by d and 2 by a

ad(x) + bd(y) = cd

ad(x) + ae(y) = a(f)

Now subtract or add as given in the situation .

y(bd - ae) = cd - a(f)

y = (cd - a(f))/(bd - ae)

Now put the value of y in 1 or 2 and get the value of x

Answer:

5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

8x - 6 > 12 + 2x

Step 2: Solve for x

Here we see that any value x greater than 3 would work as a solution to the inequality.

Out of the answer choices, 5 is the only number greater than 3.

To find the limits in the given options for the function f(x) = (x^2 - 3x + 2)/(x + 2), we can evaluate the limits as x approaches certain values.

a) lim(x->-2) f(x):

When x approaches -2, we can substitute -2 into the function:

lim(x->-2) f(x) = lim(x->-2) [(x^2 - 3x + 2)/(x + 2)]

                   = (-2^2 - 3(-2) + 2)/(-2 + 2)

                   = (4 + 6 + 2)/0

                   = 12/0

Since the denominator approaches zero and the numerator does not cancel it out, the limit diverges to infinity or negative infinity. Hence, the limit lim(x->-2) f(x) does not exist.

Therefore, the correct choice is O D. The limit does not exist.

It is important to note that for options b) and c), we need to evaluate the limits separately as indicated in the original question.

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The approximate length of a side of the rhombus is 10.67 cm.

A rhombus is a quadrilateral with all sides of equal length.

The diagonals of a rhombus bisect each other at right angles.

Let's label the length of one diagonal as d1 and the other diagonal as d2.

In the given rugby-shaped figure, the length of d1 is 14 cm, and the length of d2 is 12 cm.

Since the diagonals of a rhombus bisect each other at right angles, we can divide the figure into four right-angled triangles.

Using the Pythagorean theorem, we can find the length of the sides of these triangles.

In one of the triangles, the hypotenuse is d1/2 (half of the diagonal) and one of the legs is x (the length of a side of the rhombus).

Applying the Pythagorean theorem, we have \((x/2)^2 + (x/2)^2 = (d1/2)^2\).

Simplifying the equation, we get \(x^{2/4} + x^{2/4} = 14^{2/4\).

Combining like terms, we have \(2x^{2/4} = 14^{2/4\).

Further simplifying, we get \(x^2 = (14^{2/4)\) * 4/2.

\(x^2 = 14^2\).

Taking the square root of both sides, we have x = √(\(14^2\)).

Evaluating the square root, we find x ≈ 10.67 cm.

Therefore, the approximate length of a side of the rhombus is 10.67 cm.

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(a) 52.475nm many nautical miles south and 29.09nm many nautical miles west will the ship have traveled by 6:00 p.m.

(b) at 6:00pm the ship changes course to due west when 36.68° the ship's bearing and distance from port at 7:00 p.m.

Given that,

A ship sets out from port at noon with a bearing of s 23° west and a speed of 10 knots.

We have to find

(a) By the time it gets dark at six o'clock, how far south and west will the ship have sailed? The ship alters its course to head due west at 6:00 p.m. miles south miles west

(b). at 7:00 p.m., determine the ship's bearing and distance from the port. nautical miles in s.

We know that,

(a) For 6:00 p.m

Sin(θ)=opposite/ hypothesis

θ=29

Opposite=west

Hypothesis =60

Sin(29°)=w/60

w=29.09nm

West= 29.09nm

Cos(θ)=adjacent/ hypothesis

θ=29

Adjacent= south

Hypothesis =60

Cos(29°)= south/60

south=52.475nm

Therefore, 52.475nm many nautical miles south and 29.09nm many nautical miles west will the ship have traveled by 6:00 p.m.

(b) tan(θ)=opposite/adjacent

Opposite=29.09nm

Adjacent= 52.475nm

Tan(θ)=29.09nm/52.475nm

θ=36.68°

Therefore, at 6:00pm the ship changes course to due west when 36.68° the ship's bearing and distance from port at 7:00 p.m.

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The equation of exponential regression that fits the data is given as follows:

y = 1.5(2.5)^x.

An exponential function has the definition presented as follows:

y = ab^x.

In which the parameters are given as follows:

To obtain the equation of exponential regression, we must insert the points of the data-set into a calculator.

The points are given as follows:

(1, 3.75), (4, 9.375), (3, 23.438), (4, 58.594), (5, 146.484).

Inserting these points into a calculator, the equation is given as follows:

y = 1.5(2.5)^x.

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89 vegetarian dishes

The unitary technique, in its most basic form, is used to calculate the value of a single unit from a specified multiple. How to determine the value of one pen, for instance, if the cost of 40 pens is Rs. 400. The unitary approach can be used to complete it. Additionally, after determining the value of a single unit, we can multiply that value by the number of units needed to determine the value of the additional units. The concept of ratio and proportion is mostly applied using this way.

Using unitary method,

152 passengers are served with = 27 dishes

1 passengers are served with = 27/152

500 passengers are served with = 27 x 500 / 152

                                                         = 88. 81

                                                         ≈ 89 vegetarian dishes

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a) It would take Anya approximately 4 years to accumulate $40,000 with an annual interest rate of 12%. b) Anya must earn an annual rate of return of approximately 12.6% to save $40,000 in 3 years.

a) To calculate the number of years it would take Anya to accumulate $40,000, we can use the future value formula for compound interest:

Future Value = Present Value * (1 + interest rate)ⁿ

Where:

Future Value = $40,000

Present Value = $25,000

Interest rate = 12% = 0.12

n = number of years

Substituting the given values into the formula, we have:

$40,000 = $25,000 * (1 + 0.12)ⁿ

Dividing both sides of the equation by $25,000, we get:

(1 + 0.12)ⁿ = 40,000 / 25,000

(1.12)ⁿ = 1.6

To solve for n, we can take the logarithm of both sides of the equation:

n * log(1.12) = log(1.6)

Using a calculator, we find that log(1.12) ≈ 0.0492 and log(1.6) ≈ 0.2041. Therefore:

n * 0.0492 = 0.2041

n = 0.2041 / 0.0492 ≈ 4.15

b) To calculate the required rate of return for Anya to save $40,000 in just 3 years, we can rearrange the future value formula:

Future Value = Present Value * (1 + interest rate)ⁿ

$40,000 = $25,000 * (1 + interest rate)³

Dividing both sides of the equation by $25,000, we have:

(1 + interest rate)³ = 40,000 / 25,000

(1 + interest rate)³ = 1.6

Taking the cube root of both sides of the equation:

1 + interest rate = ∛1.6

Subtracting 1 from both sides, we get:

interest rate = ∛1.6 - 1

Using a calculator, we find that ∛1.6 ≈ 1.126. Therefore:

interest rate = 1.126 - 1 ≈ 0.126

To express the interest rate as a percentage, we multiply by 100:

interest rate = 0.126 * 100 = 12.6%

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The 99% confidence interval for the proportion of adverse reactions is ( 0.0261, 0.0395 ).

To construct a 99% confidence interval for the proportion of adverse reactions, we will use the formula:

CI = sample proportion  ± Z * √( sample proportion x  ( 1 - sample proportion) / n)

The sample proportion is:

= number of adverse reactions / sample size

= 159 / 4844

= 0. 0328

The margin of error is:

Margin of error = Z x √( sample proportion * (1 - sample proportion ) / n)

Margin of error = 0. 0667

The 99% confidence interval:

Lower limit = sample proportion - Margin of error = 0.0328 - 0.0667 = 0.0261

Upper limit = sample proportion + Margin of error = 0.0328 + 0.0667 = 0.0395

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The true statements about squares are:

B. Diagonals are perpendicular.

C. Consecutive angles are supplementary.

E. Opposite sides are parallel.

A. Diagonals are congruent to sides: This statement is not true for all squares. In a square, the diagonals are not necessarily congruent to the sides. They are equal in length, but they are not congruent unless the square is also a rhombus.

B. Diagonals are perpendicular: This statement is true for all squares. The diagonals of a square are always perpendicular to each other, forming right angles at their point of intersection.

C. Consecutive angles are supplementary: This statement is true for all squares. In a square, the consecutive angles (adjacent angles) are always supplementary, meaning that their measures add up to 180 degrees. Each angle in a square measures 90 degrees, and the sum of any two consecutive angles is 180 degrees.

D. Diagonals bisect angles: This statement is not true for all squares. The diagonals of a square do not necessarily bisect the angles of the square. They do bisect each other, dividing the square into four congruent right triangles, but they do not necessarily bisect the angles.

E. Opposite sides are parallel: This statement is true for all squares. In a square, opposite sides are always parallel. All sides of a square are equal in length, and opposite sides are parallel to each other.

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Answer:

the answer is 3 option hope that it helps

Functions can be represented with equations, graphs and tables

The value of g(3) is 9

For x = 3, the equation of the function is:

g(x) = 2x + 3

So, we have:

g(3) = 2 * 3 + 3

Evaluate the product

g(3) = 6 + 3

Evaluate the sum

g(3) = 9

Hence, the value of g(3) is 9

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Answer:

To experimentally verify that the base angles of an isosceles triangle are equal, we will need two isosceles triangles of different sizes.

Materials needed:

Two sheets of paper

Ruler

Pencil

Protractor

Scissors

Experiment:

Draw a large isosceles triangle on one sheet of paper by drawing a straight line at least 20 cm long. Then draw two additional lines from each end of the first line to meet at the top, forming an isosceles triangle. Label the base as "AB" and the other two sides as "AC" and "BC."

Measure and mark the midpoint of the base "AB."

Using a ruler, draw a perpendicular bisector through the midpoint of the base. This line should create two congruent segments.

Measure each angle formed by the intersection of the perpendicular bisector and the two sides of the triangle. Use a protractor to measure these angles.

Repeat steps 1-4 with a smaller isosceles triangle on the second sheet of paper. The smaller triangle should have a base of at least 10 cm and two sides of equal length.

Compare the measurements of the angles of both triangles. If the triangles are truly isosceles, then the two angles opposite the base (ACB) should measure the same in both triangles.

Cut out both isosceles triangles along their outlines.

Fold each triangle along the perpendicular bisector line drawn in step 3 so that the two congruent segments come together.

If the angles opposite the base are indeed equal, then the two sides of each triangle should match up perfectly when folded along the perpendicular bisector. If they do not match up, then the triangles are not truly isosceles.

By repeating this experiment with different sized isosceles triangles, we can verify that the base angles of any isosceles triangle are always equal.

The answer to this question is c.The use of a correlation coefficient.

The use of a correlation coefficient would tell you that an association claim is being made in a research study. A correlation coefficient is a statistical measure that shows the strength and direction of a relationship between two variables. It ranges from -1 to 1, with 0 indicating no relationship and -1 or 1 indicating a perfect negative or positive relationship, respectively.

A scatterplot or bar graph may be used to visually display the relationship between two variables, but they do not necessarily indicate that an association claim is being made. The measurement of two variables is necessary for any type of research study, but it does not inherently imply that an association claim is being made.

Interrogation of internal validity is a process used to ensure that the study's results accurately reflect the relationship between the variables being studied. It is important for any research study but does not specifically indicate that an association claim is being made.

Therefore,the answer to this question is c.The use of a correlation coefficient.

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herefore, the area of the triangle is approximately 2.58 square yards.

Area = (1/2) * a * c * sin(B)

where B is the angle opposite to the side of length b, and a and c are the lengths of the other two sides.

In this case, we have:

B = 47 degrees (given)

a = 2 yards (given)

c = 4 yards (given)

To use the formula, we first need to find the length of the third side, b, using the Law of Cosines:

\(b^{2}\) = \(a^{2}\)+ ^\(c^{2}\) - 2accos(B)

b^2 = 2^2 + 4^2 - 224cos(47)

b^2 ≈ 13.37

b ≈ 3.657

Now we can substitute the values into the formula for the area:

Area = (1/2) * a * c * sin(B)

Area = (1/2) * 2 * 4 * sin(47)

Area ≈ 2.58 square yards

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Answer:

y=2

Step-by-step explanation:

I researched the answer

The expression cos (125°) - cos 55° cos 35° cos 55° can be written as cos (55°) + cos (55°) cos (35°) cos (55°).

cos (125°) can be rewritten as cos (180° - 125°). Similarly, cos (35°) can be rewritten as cos (180° - 35°). Therefore, the expression can be written as:

cos (180° - 125°) - cos (55°) cos (180° - 35°) cos (55°)

Simplifying further, we have:

cos (55°) - cos (55°) cos (145°) cos (55°)

Since 145° is the supplement of 35°, we can rewrite it as:

cos (55°) - cos (55°) cos (180° - 35°) cos (55°)

Now, cos (180° - 35°) is equal to -cos (35°). Therefore, the expression becomes:

cos (55°) + cos (55°) cos (35°) cos (55°)

Hence, the expression as a function of an acute angle is:

cos (55°) + cos (55°) cos (35°) cos (55°)

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Answer:

length of the opposite leg divided by the hypotenuse

Step-by-step explanation: