help me someone i need help

Id say its option 3.

Answer:

see explanation

Step-by-step explanation:

Using the identity

tan x = \(\frac{sinx}{cosx}\)

Consider the left side

\(\frac{1-tan^2x}{1+tan^2x}\)

= \(\frac{1-\frac{sin^2x}{cos^2x} }{1+\frac{sin^2x}{cos^2x} }\) ( multiply numerator and denominator by cos²x to clear fractions

= \(\frac{cos^2x-sin^2x}{cos^2x+sin^2x}\) ← ( cos²x + sin²x = 1 ]

= cos²x - sin²x

= right side , thus proven

Answer:

x = $3.5

y = $2.25

z = $1.5

Step-by-step explanation:

let x = price of a hotdog

y = price of a drink

z = price of a pretzel

according to the question:

Davis family spends: 3x+2y+z = $16.50 (equation 1)

Ruiz family spends: 4x+4y+2z = $26      (equation 2)

Cho family spends: 2x+y+3z = $13.75     (equation 3)

from eq. 1

z = 16.50-3x-2y

substituting in eq.2

4x+4y+2(16.50-3x-2y) = 26

4x+4y+33-6x-4y=26

-2x=26-33

thus x = $3.5

from eq. 3

y = 13.75-2x-3z

y = 13.75-2(3.5)-3z

y = 13.75-7-3z

y=6.75-3z

thus,

z = 16.50-3(3.5)-2(6.75-3z)

z = 16.50-10.5-13.5+6z

z-6z = -7.5

-5z = -7.5

thus z = $1.5

thus

y = 6.75-3(1.5)

y = $2.25

The total surface area of the composite figure is 205 in².

The total surface area of the figure is calculated from the sum of the surface area of the individual shapes.

Surface area of top shape = 4 x (¹/₂ x 5 in x 3 in ) = 30 in²

The surface area of the middle shape = 4 x (5in x 5 in) = 100 in²

The surface area of the bottom shape =  4 x (¹/₂ x 5 in x 7.5 in ) = 75 in²

The total surface area of the composite figure is calculated as ;

T.S.A = 30 in² + 100 in² + 75 in²

T.S.A = 205 in²

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Answer:

You would say miles per hour.

The correct option is (a) Student's t-test. The statistical test that will be used in this week's lab is  Student's t-test.

Student's t-test is a statistical test used to compare the mean of two samples. It is used to determine whether there is a statistically difference among two populations or not. The t-test generally calculates the difference.

And if that difference is large till the limit, then it can be summarized that the means of two samples are very different. The t-test can be useful in comparison the means of two independent samples or the means of two dependent samples. And it is basically based on the Student's t-distribution.

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Full Question:

'What is the statistical test that will be used in this week's lab?

a. Student's t-test

b. No statistical test will be run on this data

c. Chi-square test

d. Kruskal-Walls test

e. Rank-sum test

Let θ be equal to 855∘. Sketch θ in standard position. θ = 855∘ is in the fourth quadrant of the coordinate plane θ = 855∘

Hence, we sketch θ in the standard position with its initial side along the positive x-axis.

Find an angle between 0∘ and 360∘ that is coterminal with θ.

The angle between 0∘ and 360∘ that is coterminal with θ is given by:

θ1 = θ - n × 360∘θ1 = 855∘ - 2 × 360∘θ1 = 855∘ - 720∘θ1 = 135∘

Find an angle between −360∘ and 0∘ that is coterminal with θ.

The angle between −360∘ and 0∘ that is coterminal with θ is given by:

θ2 = θ + n × 360∘θ2 = 855∘ + 2 × 360∘θ2 = 855∘ + 720∘θ2 = 1575∘

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Answer:

8

Step-by-step explanation:

Basically insert 18 where the X is and go from there!

2/3 (18) - 4

2/3 × 18 = 12

12 - 4 = 8

Answer:

x = 17

Step-by-step explanation:

number of sides (n) = 5

Sum of angles of polygon = (n - 2) *180

                                            = 3 * 180 = 540

9x + 71 + 92 + 5x + 139 = 540

9x +5x + 71 + 92 + 139 = 540

                   14x + 302   = 540

                               14x  = 540 - 302

                                14x = 238

                                    x = 238/14

x = 17

The number that gives the exact value of 3 7/15 is 52/15

The number is given as:

Number = 3 7/15

The above number is a mixed fraction, and it can be converted to an improper fraction as follows:

Number = 3 7/15

Multiply 15 by 3 and add the result to 7; this becomes the numerator

Number = 52/15

Hence, the number that gives the exact value of 3 7/15 is 52/15

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The general solution of the given equation, expressed explicitly as a function of the independent variable x, is w(x) = C2 * \(e^{(3x^2)}\).

Let's find the general solution of the given equation, expressing it explicitly as a function of the independent variable.
Given equation: \(x^2\) (dw/dx) = \(w(6x^3)\)
Step 1: Divide both sides by \(x^2w\) to separate the variables.
(dw/dx) / w = \(6x^3 / x^2\)
Step 2: Simplify the equation.
(dw/dx) / w = 6x
Step 3: Integrate both sides with respect to x.
∫(1/w) dw = ∫6x dx
Step 4: Find the integrals.
ln(|w|) = \(3x^2\) + C1
Step 5: Solve for w by taking the exponent of both sides.
w(x) = \(e^{(3x^2 + C1)}\)
Step 6: Simplify the equation further.
w(x) = \(e^{(3x^2)} * e^{C1}\)
Step 7: Replace \(e^{C1}\) with C2, as it's a constant.
w(x) = C2 * \(e^{(3x^2)}\)

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Answer:

80 ft

Step-by-step explanation:

hey there,

< We know that the rope is 3 pieces long. To make this into an equation, let's just write x + y + z = 150.

Assuming "y" is our second piece, we can tell y = 2x, because it is two times the size of the first piece, which is "x". We also know "z" (our third piece): z = 30.

We can try inputting all the things we know now. x + (2x) + 30 = 150. From here, we can find that x = 40. Since y is our second piece, y = 2x, so 2 x (40) = 80. The second piece would be 80 feet long. >

Hope this helped! Feel free to ask anything else.

Answer:

8 cm

Step-by-step explanation:

Because A=a*a

Area equals length times length

So, 8 is the length

64 divided by some number must equal the exact same number. Let me show what I am talking about.

Our length is a. We multiply a times itself (because that's the formula for the square's area)

Does this number exist?

Yes, it does.

And it's a whole number.

And we know from our times tables that 8*8=64

Hope it helped you

Answer:

8 cm

Step-by-step explanation:

please mark me as brainliest

Answer:

cindy is 51

Step-by-step explanation:

70 divided by 2 is 45

45+ 6 is 51

T1 LEFT OUTER JOIN T2 ON T1.P = T2.A    T1.P T1.R T2.A T2.C10   B 6 NULL NULLNULL NULL NULL 7   C T2 JOIN (T1.P = T2.A AND T1.R = T2.C) T2    T1.P T1.R T2.A T2.CNULL NULL NULL NULL NULL NULL NULL NULL

Consider the two tables T1 and T2 and the operations performed on them. The results of the operations are shown above. In the first operation, a LEFT OUTER JOIN is performed on T1 and T2, where the join is made on the basis of T1.P = T2.A. In the second operation, a JOIN is performed on T1 and T2, where the join is made on the basis of T1.P = T2.A AND T1.R = T2.C. The keyword 'LEFT OUTER JOIN' has been bolded in the main answer, while 'JOIN' has been bolded in the supporting explanation.

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Answer:

d

Step-by-step explanation:

surface area of cylinder=2πr(r+h)

2*3.14*4(4+7)

25.12*11

276.3in²

Answer:

Step-by-step explanation:

2πrh+2πr^2 is the formula for finding the surface area of a cylinder.

Since the question said to use 3.14 for pi,

2 * 3.14 * 4* 7 + 2*3.14*16

= 175.84 + 100.48

= 276.32 in^2

So, the answer is d, 276.3 (rounded to 1 decimal place)

In probability theory, a Venn diagram is a diagrammatic representation of sets that shows all possible logical relations between them. Venn diagrams are widely used in probability and statistics to visualize the relationship between different sets of data.

The given Venn diagram shows the relationship between three sets, A, B, and C. In order to calculate probabilities using a Venn diagram, we need to know the number of elements or members in each set, as well as any overlapping regions.

We can then use these numbers to calculate the probability of different outcomes.Let's consider two possible probabilities from the given Venn diagram:1.

The probability that an element is in set A and set B but not in set C is 0.1/0.5 = 0.22. The probability that an element is in set B or set C but not in set A is 0.2/0.6 = 1/3The first probability can be calculated by dividing the number of elements in the overlapping region of sets A and B (which is 0.1) by the total number of elements in set B (which is 0.5).

This gives us a probability of 0.22 or 22%.The second probability can be calculated by dividing the number of elements in the union of sets B and C (which is 0.2) by the total number of elements in either set B or set C (which is 0.6). This gives us a probability of 1/3 or approximately 33%.

Therefore, the correct probabilities are:1.

The probability that an element is in set A and set B but not in set C is 0.1/0.5 = 0.22.

The probability that an element is in set B or set C but not in set A is 0.2/0.6 = 1/3

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The value of the curvature κ(x) = 10 sec^2 x tan x /[1+25 sec^4 x]^3/2.

To find the curvature using the formula κ(x)=|f"(x)|/[1+(f’(x))^2]^3/2 with the function y = 5 tan x, we need to differentiate y twice and substitute the values in the formula.

Given function is y = 5 tan x.

The first derivative of y = 5 tan x is: y' = 5 sec^2 x.

The second derivative of y = 5 tan x is: y'' = 10 sec^2 x tan x.

Substitute the value of f"(x) and f'(x) in the formula of curvature κ(x) = |f"(x)|/[1+(f’(x))^2]^3/2 :κ(x) = |10 sec^2 x tan x|/[1+(5 sec^2 x)^2]^3/2κ(x) = 10 sec^2 x tan x /[1+25 sec^4 x]^3/2

Therefore, the value of the curvature κ(x) = 10 sec^2 x tan x /[1+25 sec^4 x]^3/2.

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Answer:

Una pregunta es un enunciado que normalmente funciona como una solicitud de información, que se espera que se proporcione en forma de respuesta.

Step-by-step explanation:

Answer:

We multiply by 2 and add 4

Step-by-step explanation:

To find the pattern,  we find the slope

m = ( y2-y1)/(x2-x1)

m = ( 10-6)/(3-1)

m = 4/2

m =2

We are multiplying by 2

y = mx+b  where m is the slope and b is the y intercept

y = 2x+b

Using the point (1,6)

6 = 2(1)+b

6 = 2+b

The y intercept is 4

y = 2x+4

We multiply by 2 and add 4

The concept of inductive reasoning is based on the fact that people generate information through general observations and evidence. In the decision-making process, inductive reasoning involves selecting the bike segments based on observations. On the other hand, the deductive approach would involve starting with a general idea and creating specific conclusions based on it.  

Inductive Reasoning: Inductive reasoning involves using specific pieces of evidence or observations to generate general conclusions. In the decision-making process, inductive reasoning can be used to select the most suitable bike segments for a company. This is based on a combination of observations and a general idea of the characteristics that the company is looking for. To select the bike segments, an inductive approach would begin with the observation of different bike segments in the market and the characteristics of the potential customers that the company is targeting. The company would then use this information to develop an understanding of the key features that are important to these customers. After generating the initial set of ideas, the company would then narrow down the bike segments that meet these criteria to arrive at a final decision.
Deductive Reasoning: Deductive reasoning involves starting with general ideas and then using specific evidence to create specific conclusions. In the decision-making process, a deductive approach can be used to select bike segments based on specific premises. This would involve starting with a general idea of what the company is looking for and then breaking this down into specific criteria. The company would then use these criteria to evaluate the different bike segments in the market and select the most suitable segments based on their specific characteristics. The major premise would be the initial idea of what the company is looking for, while the minor premise would be the specific characteristics that the company is evaluating. The company would then use these two premises to arrive at a final decision.

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Using algebra, we know that the total number of bees in her hive is 540.

So,

Then,

(A) Work out an estimate for the total number of bees in her hive

The estimated total no. of bees will be 540 bees.

Therefore, using algebra, we know that the total number of bees in her hive is 540.

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The number of oranges and the number of mangoes that she bought will be 20 and 5.

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

A woman saw oranges and mangoes at the market.

She bought some oranges at 35 cents each and some mangoes at $1.00 each.

If she bought a total of 25 fruits which had a total cost of $12.00.

Let x be the number of oranges and y be the number of mangoes.

Then the equations will be

       x + y = 25  ...1

0.35x + y = 12  ...2

By solving equations 1 and 2, we have

x = 20 and y = 5

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Answer:

To find out how many gallons of paint are needed to cover the walls, we need to first find the total area of the walls.

The four walls are rectangles with a length of 20 feet and a height of 12 feet. So, the area of one wall is:

20 feet x 12 feet = 240 square feet

Since there are four walls, the total area of the walls is:

4 x 240 square feet = 960 square feet

We know that one gallon of paint can cover approximately 320 square feet. To find how many gallons of paint are needed, we can divide the total area of the walls by the area covered by one gallon of paint:

960 square feet ÷ 320 square feet per gallon = 3 gallons of paint

Therefore, you need approximately 3 gallons of paint to cover the walls.

The youth hockey team already played 3 matches in which they scored 6, 9 and 2 goals.

Let

the score of the fourth goal = x

The number of goals must be greater than 3 for the average score to be greater than 5

The first four terms of the Taylor series for the function (2x) about the point (a=1) are (2x + 2x - 2).

To find the first four terms of the Taylor series for the function (2x) about the point (a = 1), we can use the general formula for the Taylor series expansion:

\(\[f(x) = f(a) + f'(a)(x-a) + \frac{f''(a)}{2!}(x-a)^2 + \frac{f'''(a)}{3!}(x-a)^3 + \ldots\]\)

Let's calculate the first four terms:

Starting with the first term, we substitute

\(\(f(a) = f(1) = 2(1) = 2x\)\)

For the second term, we differentiate (2x) with respect to (x) to get (2), and multiply it by (x-1) to obtain (2(x-1)=2x-2).

\(\(f'(a) = \frac{d}{dx}(2x) = 2\)\)

\(\(f'(a)(x-a) = 2(x-1) = 2x - 2\)\)

Third term: \(\(f''(a) = \frac{d^2}{dx^2}(2x) = 0\)\)

Since the second derivative is zero, the third term is zero.

Fourth term:\(\(f'''(a) = \frac{d^3}{dx^3}(2x) = 0\)\)

Similarly, the fourth term is also zero.

Therefore, the first four terms of the Taylor series for the function (2x) about the point (a = 1) are:

(2x + 2x - 2)

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Answer:

theres no image u need an imgae

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

Maybe hopefully it right

Answer:

-17p+100

______

4

Step-by-step explanation: combine multiplied terms into a single fraction. distribute. combine multiplied terms into a single fraction. find a common denominator. combine fractions with a common denominator. multiply the numbers.Rearrange terms.Combine multiplied terms into a single fraction.Cancel terms that are in both the numerator and denominator.Find common denominator.Combine fractions with common denominator.Distribute.Add the numbers.Combine like terms