help pls: maths. 15 points for it!

Answer:

1/4^12

Step-by-step explanation:

4^-12 = 1/4^12

Good luck

The statistical test in which the mean difference between two groups is compared to a distribution of differences between means is known as the t-test.

The one-way analysis of variance (ANOVA) is the suitable procedure in place of the t-test for a comparison of more than two group means. The ANOVA is interested in the locations of the distributions indicated by means as well since it has the same underlying assumptions as the t-test.

ANOVA is used to compare the means among three or more groups, while the Student's t-test is used to compare the means between two groups. First receives a shared P value in an ANOVA. The ANOVA test results with a significant P value for at least one pair where the mean difference was statistically significant.

From the above theory, the test specified above is termed as the t-test.

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The equation of hyperboloid of one sheet: \(\frac{x^{2} }{A^{2} } +\frac{y^{2} }{B^{2} } -\frac{z^{2} }{C^{2} } =1\) which is used to calculate hyperboloid.

The most challenging quadric surface is probably the hyperboloid of a single sheet. For starters, it is puzzling since its equation is quite similar to that of a hyperboloid with two sheets. For information on how to tell them apart, see to the section on the two-sheeted hyperboloid. Its cross portions are also highly intricate equation.

Having said all of that, everyone who has watched The Simpsons, even for the first time, will recognize this form. One-sheet hyperboloids have a striking resemblance to Springfield Nuclear Power Plant cooling towers.

The cross sections of a straightforward one-sheeted hyperboloid with A = B = C = 1.

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Answer:

The independent variable is the variable that is manipulated or changed during an experiment. In this case, the independent variable is represented by the x-values of the given points.

So, the answer would be option A: {-2, 3, 1, 5}

Step-by-step explanation:

brainliest Plsssss

The completed table would look like this

Mass (kg)       12       24        36      48      60

Percentage   20%    40%   60%   80%   100%

The double number line represents Henrik's mass, which is 60 kg. The second tick mark on the Mass line corresponds to this value. The Percentage line ranges from 0% to 100%, representing the percentage of Henrik's mass. To complete the table, we need to calculate the different percentages.

To find a certain percentage of Henrik's mass, we locate the corresponding point on the Percentage line and draw a vertical line to intersect the Mass line. We can then read the mass value at that intersection point.

For example, to find 20% of Henrik's mass, we locate the point on the Percentage line labeled "20%." Drawing a vertical line from this point, it intersects the Mass line at a value of 12 kg. Therefore, 20% of Henrik's mass is 12 kg.

Similarly, for 40% of Henrik's mass, the vertical line intersects the Mass line at a value of 24 kg.

In summary, the completed table  would look like this

Mass (kg)       12       24        36      48      60

Percentage   20%    40%   60%   80%   100%

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Answer:

5(x-2)-(X+3)=x-8

5x-10-x-3=x-8

4x-13=x-8

4x-x=(-8)+13

3x=5

X=5/3

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Answer:

-5

Step-by-step explanation:

Answer:

The weight of the sea water in the aquarium is 3827.119 lb

Step-by-step explanation:

We start by calculating the volume of the aquarium

Since it is a cuboid, the volume will be L * B * H

= 4.4 * 2.5 * 5.3 = 58.3 ft^3

Mathematically;

Mass = density * volume

The density of sea water is 63.93 lb/ft^3

Mass = 63,93 * 58.3 = 3,827.119 lb

Answer:

27 and 597

Step-by-step explanation:

To evaluate A5 and A100, substitute n = 5, n = 100 into An , that is

A5 = 6(5) - 3 = 30 - 3 = 27

A100 = 6(100) - 3 = 600 - 3 = 597

Answer:

5n=6n-3

C.L.T

6n-5n=3

n=3

ii.100n=6n-3

C.L.T

100n-6n= -3

94n/94=-3/94

n=-0.032

Answer:

12.67

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Answer: 9x I’m pretty sure

Step-by-step explanation:

The triangle EFG is an isosceles triangle as side EF is congruent to side EG.

In this question we have a triangle whose vertices are known. We need to define the figure according to the congruency among its sides. Two sides are congruent when both have the same length. There are three kinds of triangles:

Sides are formed each pair of vertices. The length of each side can be found by means of Pythagorean theorem:

l = √[(Δx)² + (Δy)²]

First, write the locations of the vertices:

E(x, y) = (1, 4), F(x, y) = (5, 4), G(x, y) = (1, 0)

Second, determine the length of every side of the triangle:

EF = √[(5 - 1)² + (4 - 4)²]

EF = 4

FG = √[(1 - 5)² + (0 - 4)²]

FG = √[4² + (- 4)²]

FG = 4√2

EG = √[(1 - 1)² + (0 - 4)²]

EG = 4

By direct comparison, we conclude that the triangle EFG is an isosceles triangle.

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Answer:

I would say about 45 degrees because 30 feet is 3 times of 10 feet so if 10 feet equals to 45 degrees, than 30 feet is equal to 135 degrees.

Step-by-step explanation:

30/3= 10 135/3= 45

45+45= 90+45=135

so 30/135: 3/3 = 10/45

Answer:

30%

Step-by-step explanation:

Original price (100%) = $130

Discounted price = $91

Discount = 130-91 = $39

$130 = 100%

$1 = 100/130

$39 = 100/130 × 39 = 30 %

% discount = 30%

The missing statement in the given argument is a premise.

Premise: Carrie Underwood has won several Grammy awards.

Conclusion: Carrie Underwood is a talented singer.

Revised argument:

Premise: Winning several Grammy awards is an indication of talent.

Premise: Carrie Underwood has won several Grammy awards.

Conclusion: Therefore, Carrie Underwood is a talented singer.

The given statement is an example of an enthymeme, which is an argument with an implied premise or conclusion. In this case, the implied premise is that winning several Grammy awards is an indication of talent.

The argument is based on the assumption that the audience agrees with this premise, and therefore, the conclusion that Carrie Underwood is a talented singer follows logically.

However, it is important to note that the relationship between winning Grammy awards and talent is not necessarily causative, as other factors such as marketing, popularity, and the preferences of the voting committee can also influence the outcome.

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The correct statement is the percent increase of her salary is 20% every year. Hence, the answer is option E. Given that a company's vice president's salary n years after becoming vice president is defined by the formula S(n) = 70000(1.2)". We have to determine which of the following statements is true:

Given that a company's vice president's salary n years after becoming vice president is defined by the formula S(n) = 70000(1.2)". We have to determine which of the following statements is true:

She will be receiving a 2% raise per year. Her salary will increase $14,000 every year. The percent increase of her salary is 120% every year. Her salary is always 0.2 times the previous year's salary. The percent increase of her salary is 20% every year.

To calculate the salary of the vice president after n years of becoming a vice president, we use the given formula:

S(n) = 70000(1.2)

S(n) = 84000

The salary of the vice president after one year of becoming a vice president: S(1) = 70000(1.2)

S(1) = 84000

The percent increase of her salary is: S(n) = 70000(1.2)n

S(n) - S(n-1) / S(n-1) × 100%

S(n) - S(n-1) / S(n-1) × 100% = (70000(1.2)n) - (70000(1.2)n-1) / (70000(1.2)n-1) × 100%

S(n) - S(n-1) / S(n-1) × 100% = 20%

Therefore, the correct statement is the percent increase of her salary is 20% every year. Hence, the answer is option E.

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Answer:

49

Step-by-step explanation:

(-7)² = -7 × -7

-7 × -7 = 49

Answer:

49

Step-by-step explanation:

I hope this helps!

Answer:

9 pencils = 0.45

12 pencils = 0.60

Brainiest plz  :)

Answer:

$.60

Step-by-step explanation:

9=.45

.45/9=.05

.05x12=0.60

$.60

The dimensions of the carpet are 73 x 43. = 3139.

In mathematics, a dimension is a way to quantify the size or separation of an area, an object, or a space inside one direction. In simpler terms, It is just the measurements of an object's length, width, and height.

Geometric figures can be created using any configuration of points, lines, or planes. Depending on their dimensions, geometric figures can be categorized as either a space figure, a surface figure, a line, another line segment, a ray, or a point.

The perimeter of the carpets = is 232.

The length of the carpet = 30 in.

In a rectangle, the edge is P = 2W + 2L

In this case 232 = 2W + 2L

Also, the 2nd sentence says L = W + 30

This length variable can be changed in the perimeter formula:

232 = 2W + 2(W+30)

232 = 2W + 2W + 60

232 = 4W + 60

172 = 4W

43 = W

Then, since L = W+30

L = 43+30 = 73

So the dimensions of the carpet are 73 x 43. = 3139.

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we have

f(x)=2x^3+4x^2-2x-4

using a graphing tool

Find out the zeros of the given function

see the attached figure

the zeros are

-2, -1 and 1

that means

2x^3+4x^2-2x-4=2(x+2)(x+1)(x-1)

therefore

Answer:

13.2 g

Step-by-step explanation:

let x = grams sugar in a 200 ml glass

16.5 g sugar / 250 ml = x g sugar / 200 ml

x(250) = (16.5)(200)

x =  (16.5)(200) / (250) = 3300 / 250 = 13.2

Answer:  there are 13.2 g sugar in a 200 ml glass of juice

The conditional probability that you picked the fake coin given that you got heads twice is 4/(3n-1).

Let E be the case where you choose the bogus coin and F be the case where you got heads twice. We wish to calculate P(E|F), which is the likelihood that you chose the fake coin given that you received heads twice.

By Bayes' theorem, we have:

P(E|F) = P(F|E)P(E) / P(F)

We can calculate each term on the right-hand side as follows:

P(F|E) = 1, Because the fake coin contains heads on both sides and always results in two heads when flipped.

P(E) = 1/n, since there is only one fake coin among n coins.

P(F) = P(F|E)P(E) + P(F|not E)P(not E), where not E is the event that you picked a normal coin. We can calculate:

P(F|not E) = (n-1) * (1/2)^2 = (n-1)/4, Because each normal coin has a 50% chance of revealing heads on each given flip and there are n-1 normal coins

P(not E) = (n-1)/n, since there are n-1 normal coins among n coins.

Therefore, we have:

P(F) = 1 * (1/n) + (n-1)/4 * (n-1)/n = (3n-1)/(4n)

Substituting these values into Bayes' theorem, we get:

P(E|F) = 1 * (1/n) / ((3n-1)/(4n)) = 4/(3n-1)

Thus, the conditional probability that you picked the fake coin given that you got heads twice is 4/(3n-1).

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Answer:

$0.40 per oz

Step-by-step explanation:

given that the cereal is $3.60 for a 9 oz box

i.e

9 oz ----> costs $3.60

1 oz ----> costs $3.60 ÷ 9 = $0.40

hence the unit rate is $0.40 per oz

Answer:

0.40 per ounce

Step-by-step explanation:

The question asks is to find the unit rate, or price per ounce.

To find this, we need to divide the price by the number of ounces.

price/ ounces

It costs $3.60 for 9 ounces of cereal.

$3.60/9 ounces

Divide $3.60 by 9 (3.60/9=0.4)

$0.4/ounce

It costs $0.40 per ounce of cereal.

Answer:

-5

Step-by-step explanation:

Answer:

u=50/11

Step-by-step explanation:

cross multiply and divide on both sides

Answer:

u = \(\frac{50}{11}\)

Step-by-step explanation:

Given

\(\frac{u}{10}\) = \(\frac{5}{11}\) ( cross- multiply )

11u = 50 ( divide both sides by 11 )

u = \(\frac{50}{11}\)

If the gravel must be distributed across an area that measures 17 feet square and the gravel layer is to be 6 inches thick, the the quantity of gavel needed would be 102 cubic feet

The area of the base = 17 feet square

The thickness of the gravel layer = 6 inches

The volume of the given area = The base area × The thickness

Substitute the values in the equation

The volume of the given area = 17 × 6

= 102 cubic feet

Hence, if the gravel must be distributed across an area that measures 17 feet square and the gravel layer is to be 6 inches thick, the the quantity of gavel needed would be 102 cubic feet

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Answer:

28/4=7

Step-by-step explanation:

Divide 4 by 28 and you get 7

Answer:

The last one

Step-by-step explanation:

The slope is negative

Answer:its d

Step-by-step explanation: trust

Answer: The only reason would be the benefits of a mortgage plan. which includes, helping you to maintain your credit score, money available to you when need for curtain life decisions, and there are many tax benefits that come with a mortgage plan! Hope this helps! best of luck!

the size of the goldfish such that 95 percent of the goldfish are smaller is approximately 2.91 inches.

To find the size of a goldfish such that 95 percent of the goldfish are smaller, we need to find the corresponding z-score for the desired percentile in a standard normal distribution.

Since we want 95 percent of the goldfish to be smaller, we are looking for the z-score that corresponds to the cumulative probability of 0.95. This corresponds to a z-score of approximately 1.645.

The formula for converting a z-score to an actual value in a normal distribution is:

x = μ + z * σ

where x is the actual value, μ is the mean, z is the z-score, and σ is the standard deviation.

In this case, the mean (μ) is 2.5 inches and the standard deviation (σ) is 0.25 inches.

Using the formula, we can calculate the size of the goldfish:

x = 2.5 + 1.645 * 0.25 = 2.9125

Rounding to two decimal places, the size of the goldfish such that 95 percent of the goldfish are smaller is approximately 2.91 inches.

Therefore, the correct answer is 2.91 inches.

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