Help pleaseeeee will give the brainliest

Answer:

\(\cos(x) \approx 0.82\)

Step-by-step explanation:

Cosine is defined as:

adjacent / hypotenuse.

We can determine that 18 is the side adjacent to x, and that 22 is the triangle's hypotenuse.

Putting these values into the definition of cosine:

\(\cos(x) = \dfrac{\text{adj}}{\text{hyp}}\)

\(\cos(x) = \dfrac{18}{22}\)

\(\cos(x) \approx 0.82\)

Answer:

cos x= adjacent/hypotenus

cos x= 18/22

cos x=0.8182

x=35.09⁰

Answer:

4.8

Step-by-step explanation:

i think

Marcella must fill the pyramid with water and pour it into the prism three times in order to completely fill the prism with water.

In this question, we have a pyramid-shaped container and a prism-shaped container. It is given that the base of the pyramid is congruent to the base of the prism, and their heights are equal. We need to find how many times Marcella must fill the pyramid with water and pour it into the prism in order to completely fill the prism with water.Let the volume of the pyramid-shaped container be P and the volume of the prism-shaped container be R. Since the base of the pyramid is congruent to the base of the prism, their base areas are equal. Let this base area be A.

Therefore, we have:

Volume of the pyramid = (1/3) × A × h Volume of the prism = A × h where h is the height of both containers.

Since the heights of the pyramid and prism are equal, we can cancel them out from the above equations. Hence, we have:

Volume of the pyramid = (1/3) × A × h Volume of the prism = A × h Volume of the prism/Volume of the pyramid = 3

This means that the volume of the prism is three times the volume of the pyramid.

Therefore, Marcella must fill the pyramid with water and pour it into the prism three times in order to completely fill the prism with water.

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Answer:

The 95% confidence interval for the proportion of students who get coaching on the SAT is (0.1232, 0.147).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.

\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)

In which

z is the z-score that has a p-value of \(1 - \frac{\alpha}{2}\).

427 had paid for coaching courses and the remaining 2733 had not.

This means that \(n = 427 + 2733 = 3160, \pi = \frac{427}{3160} = 0.1351\)

95% confidence level

So \(\alpha = 0.05\), z is the value of Z that has a p-value of \(1 - \frac{0.05}{2} = 0.975\), so \(Z = 1.96\).

The lower limit of this interval is:

\(\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1351 - 1.96\sqrt{\frac{0.1351*0.8649}{3160}} = 0.1232\)

The upper limit of this interval is:

\(\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1351 + 1.96\sqrt{\frac{0.1351*0.8649}{3160}} = 0.147\)

The 95% confidence interval for the proportion of students who get coaching on the SAT is (0.1232, 0.147).

The TV would not fit as the TV is too tall option (C) is correct after applying the concept of the ratio.

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

The aspect ratio is:

= 4:3

Multiply by 16 to the above ratio:

= 64: 48

The height in the area = 47"

But from the aspect ratio the height of the TV = 48"

Thus, the TV would not fit as the TV is a too tall option (C) is correct after applying the concept of the ratio.

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Answer:

\(h'(1) = 23\)

Step-by-step explanation:

Let be \(h(x) = (x^{2}+8)\cdot g(x)\), where \(r(x) = x^{2} + 8\). If both \(r(x)\) and \(g(x)\) are differentiable, then both are also continuous for all x. The derivative for the product of functions is obtained:

\(h'(x) = r'(x) \cdot g(x) + r(x) \cdot g'(x)\)

\(r'(x) = 2\cdot x\)

\(h'(x) = 2\cdot x \cdot g(x) + (x^{2}+8)\cdot g'(x)\)

Given that \(x = 1\), \(g (1) = -2\) and \(g'(1) = 3\), the derivative of \(h(x)\) evaluated in \(x = 1\) is:

\(h'(1) = 2\cdot (1) \cdot (-2) + (1^{2}+8)\cdot (3)\)

\(h'(1) = 23\)

Answer:

uno=dose

Step-by-step explanation:

Answer:

10.7%

Step-by-step explanation:

Hope this helps :)

Answer:

D. \(10^{\circ}\)

Step-by-step explanation:

Let the measure of minor arc \(AE\) be \(\alpha\) and the measure of minor arc \(BD\) be \(\beta\).

Using the secant-secant theorem, \(\frac{\alpha-\beta}{2}=32 \implies \alpha-\beta=64^{\circ}\).

By the inscribed angle theorem, \(\alpha=84^{\circ}\).

Thus, \(\beta=20^{\circ}\).

By the inscribed angle theorem, \(x=10^{\circ}\).

The simple radical form is 72√2.

What is simple radical form?

If we know the prime factorization of 32, we can write the simplest radical form of the square root of 32. Thus, the prime factorization of 32 is 2 × 2 × 2 × 2 × 2. If it is written in the radical form, then the simplest radical form of the square root of 32 is 4√2. Square Root of 32 in Radical Form: 4√2.

Given,

3√2•2√8•√3•√6

= 3×√2×2×√8×√3×√6

as we know √ab = √a√b

we can write, √8 = √2√4 and √6 =√2√3

we get,

=3×√2×√2×√4×√3×√3×√2

=3×2×2×3×√2

=72√2

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Answer:

A

Step-by-step explanation:

For a right triangle

\(A=\frac{ab}{2} \\\frac{(10.4)(15.3)}{2} =79.56\)

This is the same as the other triangle because they are the same size because of congruency

Area of the rectangle

\(a^2+b^2=c^2\\\)

\(\sqrt{(10.4^2+15.3^2} =c\)

\(c= 18.5\)

18.5 x 7 = 129.5

Add them all up

129.5+79.56+79.56= 288.62

Answer:

Domain: set of possible input values (x-values)

Range: set of output values (y-values)

The range for the function \(f(x)=-2|x-5|+8\) is:

\(f(x)\leq 8\)

(5, 8) is the vertex of the line

Because |x - 5| is absolute (so always positive) and it is multiplied by -2,

-2|x - 5| will always be negative unless x = 5 (when it will be zero).  Therefore, the max y-value is 8.

However, your question actually asked what the function is when x = -5:

\(f(-5)=-2|x-5|+8\\\\= -2|-5-5|+8\\\\= -12\)

Step-by-step explanation:

Thats the all rhe answers step by step

Answer:

quotient is the answer to division. So if 7/2=3 with a remainder of 1, then the quotient is 3

The independent variable is time.

An independent variable is a variable that represents a quantity that is being manipulated in an experiment. x is often the variable used to represent the independent variable in an equation.

Given:

r (min)                  d (°C)

0                            105

4                            98.4

8                            85.4

12                            74.8

16                            68.7

20                            62.1

As, from the table it can be seen that the temperature vary in accordance with time but the time isn't depend on any variable.

Hence, the independent variable is time.

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Answer:

D

Step-by-step explanation:

The answer is D because  a circle has at least a 360 degree and a 180 is a half circle.

Answer:

\(21y^{3} - 4y^{2} + 11y\)

Step-by-step explanation:

\(11y + 7y(3)y^{2} - 4y^{2}\)

=11y + 21y^3 +-4y^2

\(=21y^{3}-4y^{2}+11y\)

Answer:

-4

Step-by-step explanation:

y=2-9×(2/3)=2-6= -4

Answer:

x^2

Step-by-step explanation:

1^2=1

2^2=4

3^2=9

Jamie would pay $720 in interest in 4 years

The amount of interest he would have to pay = amount borrowed x interest rate x time

Amount borrowed = cost of the TV - amount put down

$1250 - $250 = $1000

Interest rate = 18%

Time = 4 years

Interest = 1000 x 0.18 x 4 = $720

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Interest is indeed the loan cost, in which the borrower pays this same lender a fee for the loan. Income is either simple or compounded, typically expressed in percentage. In this, the interest is $720, that's calculation can be defined as follows:

Given:

Using Formula:

\(\to \bold{\text{Interest =amount borrowed}}\times \bold{\text{interest rate}}\times \bold{\text{time}}\\\\\to \bold{\text{Borrowed amount = Television cost}} - \bold{\text{amount proclaimed}}\)

Calculating Borrowed amount:

 \(\text{} =\$1250 - \$250 =\$1000\)

 Calculating Interest:

\(\bold{= 1000 \times 18\% \times 4} \\\\\bold{= 1000 \times \frac{18}{100} \times 4} \\\\\bold{= 10 \times 18 \times 4} \\\\\bold{=\$ 720}\)

Therefore, In 4 years Jamie would pay $720 as interest.

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Answer:

770,400

Step-by-step explanation:

770,400 seconds

the greatest commmon factor of 56 and 32 is 8

so in order to use the distributive property

8(7+4)=56+32=88

Given:

The function f(x) = 3cos(x) - 2.

Required:

What are the minimum and maximum value of function?

Explanation:

To check maximum and minimum value of function.

First derivate the original function.

After putting first derivative equal to zero, critical points can be found.

Then, do second deritvative to check points of maxima and minima.

The critical points at which second derivative greater than zero. Point will be of minima.

The critical points at which second derivative less than zero. Point will be of maxima.

So,

Now, do second derivative test for maximum and minimum points

Answer:

Using proportional reasoning, we can predict that there will be 40 red candies in the large bag.

Using proportional reasoning, we can set up and solve the following equation to determine the number of red candies in the large bag:

P = Proportion of red candies in the large bag

R = Red candies in the small bag

R × (33/9) = P

12 × (33/9) = P

P = 40 red candies in the large bag

Therefore, using proportional reasoning, we can predict that there will be 40 red candies in the large bag.

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Answer:

Step-by-step explanation:

a + c = 257

12a + 8c = 2576

-12a - 12c = -3084

12a  + 8c = 2576

-4c = -508

c =  127 children tickets

a + 127 = 257

a = 130 adult tickets

Answer: h = 22.5

Step-by-step explanation:

Total angle area of a 12 sided polygon is 1800

1. One angle would be 1800/12= 150

2. Add 30 one each side to cancel out and only leave 8h.

3. To get rid of the 8 we divide the the other side by 8.

The answer is 22.5

Answer: D 22.5 i got it right on the exam

Step-by-step explanation:

Step-by-step explanation:

the answer is

<B = <D

<B = 125°

a. The probability that a student scored below 91 on this exam is 0.9878

b. The probability that a student scored between 65 and 89 is 0.8186.

c. A grade of 68 on the second exam is better than a grade of 81 on the first exam for the given conditions

a. To find the probability that a student scored below 91 on the exam, we need to find the area under the normal distribution curve to the left of 91. Using a standard normal distribution table or calculator, we can find the corresponding Z-score as:

Z = (91 - 73) / 8 = 2.25

The probability of scoring below 91 is then the same as the probability of a standard normal random variable being less than 2.25, which is approximately 0.9878.

b. To find the probability that a student scored between 65 and 89, we need to find the area under the normal distribution curve between these two values. Using the Z-score formula as above, we find:

Z1 = (65 - 73) / 8 = -1.00

Z2 = (89 - 73) / 8 = 2.00

Using a standard normal distribution table or calculator, we can find the probability of a standard normal random variable being between -1.00 and 2.00, which is approximately 0.8186.

c. To determine if a grade of 81 on this exam or a grade of 68 on a different exam is better if the professor grades on a curve, we need to find the Z-score that corresponds to the top 10% of the class. Using a standard normal distribution table or calculator, we can find this Z-score as:

Z = 1.28 (approximately)

For the first exam, the Z-score corresponding to a grade of 81 is:

Z = (81 - 73) / 8 = 1.00

Since 1.00 < 1.28, a grade of 81 is not in the top 10% of the class. For the second exam, the Z-score corresponding to a grade of 68 is:

Z = (68 - 62) / 3 = 2.00

Since 2.00 > 1.28, a grade of 68 is in the top 10% of the class. Therefore, if the professor grades on a curve, a grade of 68 on the second exam is better than a grade of 81 on the first exam.

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The angles COA and POC are 22.5 and 67.5 degrees respectively as POA is a right angled triangle.

POA is a right angle so it is 90 degrees.

POC +COA = 90  .....(1)

Also, POC is 3 times as large as COA.

Let's take COA, "x"

POC = 3x

Substituting the values in equation (1) as follows:

x + 3x = 90

4x = 90

x= 22.5

Therefore,

COA = 22.5°

POC = 22.5*3 = 67.5°

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