[HELP! WILL GIVE BRAINLIEST] Determine the value of θ.

[HELP! WILL GIVE BRAINLIEST] Determine The Value Of .

Answers

Answer 1

Answer:20.9248 degrees

Step-by-step explanation:

sin(θ)=opposite/hypotenuse

      θ=sin⁻¹(opposite/hypotenuse)

      θ=sin⁻¹(5/14)

      θ=20.9248 degrees      or θ=0.3652 radians


Related Questions

suppose we wish to estimate the percentage of students who smoke cigarettes at each of several colleges and universities. two of the colleges are wabash college (enrollment 900) and purdue university (enrollment 36,000). what should the relative size of our samples be from each school if we want the two sampling distributions to have approximately the same standard deviation?

Answers

The relative size of the samples from each school should be proportional to the square root of the enrollment at each school.

The relative size of the samples from each school should be proportional to the square root of the enrollment at each school. So, for Wabash College, we would want to sample approximately √(900) = 30 students, and for Purdue University, we would want to sample approximately √(36,000) = 180 students.

This would ensure that the standard deviation of the sample proportions from each school would be approximately the same.

So, the relative size of the samples from each school should be proportional to the square root of the enrollment at each school.

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normal approximation for binomial distribution
when n is large we can use this to determine probabilities for binomial settings

Answers

The shape of the binomial distribution needs to be similar to the shape of the normal distribution. To ensure this, the quantities np and nq must both be greater than five (np>5 and nq>5); the approximation is better if they are both greater than or equal to 10

In mathematical terms, if X is the sum of successes in n different Bernoulli trials, and p is the likelihood of success in each trial, then X may be represented as a normal distribution with mean increasing as n rises.

μ = np

variance σ^2 = np(1-p)

What is binomial distribution?

The binomial distribution is a discrete probability distribution that produces just two outcomes in an experiment: success or failure. In a binomial distribution, the chance of success must remain constant during the trials under consideration. For example, because there are only two possible outcomes when tossing a coin, the chance of flipping a coin is 1/2 or 0.5 for each experiment we do.

Here,

When the sample size (n) is high, the distribution of the total of successes (k) in n separate Bernoulli trials approaches a normal distribution, according to the normal approximation for the binomial distribution.

In mathematical terms, if X is the total of successes in n separate Bernoulli trials, with p being the chance of success in each trial, then X may be represented by a normal distribution with mean as n increases.

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Find the vertical, horizontal, and slant asymptotes, if any,

Answers

The vertical asymptote is x = 1 or 7

There is no horizontal asymptote

What is asymptote?

An asymptote is a straight line that constantly approaches a given curve but does not meet at any infinite distance. In other words, Asymptote is a line that a curve approaches as it moves towards infinity.

To find vertical asymptote we set the denominator to 0 and we find the value of x

:. x² - 8x +7 = 0

x² -7x-x+7 = 0

(x²-7)(-x+7) = 0

x( x-7) -1(x-7) = 0

(x-1)(x-7) = 0

x-1 = 0 or x-7 = 0

therefore x = 1 or 7

to find the horizontal asymptote:

Since the degree of the numerator is higher than the denominator, there is no horizontal asymptote

to find the slant asymptote, we divide the numerator by the denominator.

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Please Help I will Mark Brainlist its Math Question!!

Answers

When two or more roads or lines cross each other, they come together. You may also remark that two roads or lines cross.

What is the intersect command?

They are referred to be intersecting lines when two or more lines in a plane cross each other.The common point shared by all intersecting lines is known as the point of intersection, and it can be found on all of them. Point O in this case represents the intersection of lines P and Q.

A line is something that is made up of indivisible points that stretch in many directions, to put it simply. Let's use the two points A and B as an example. Now, a line connecting points A and B can be drawn.

Line AB is the name of this line, which stretches in both directions. Arrows are used to represent lines to show that they have no ends and go on forever.

solve log(x)=-x+6

log(x)=-x+6 it can be written as

⇒log(x)+x+6=0

⇒log(1/x+6)=0

It will  be in the form of lod(1/a+b)

so we can write log(x)+log(1+6/x)

Therefore, if modulus of 6/x <0 then it can be written as

                        ∞ =log(x)-∑xn/n

            n-1

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Use the sum of cubes identity to find the factors of the expression 8x^6 + 27y^3. Write your answer in the form of the expression on the right of the sum of cubes identity.

Answers

The sum of cubes identity states that a^3 + b^3 = (a+b)(a^2 - ab + b^2). To find the factors of 8x^6 + 27y^3, we can apply this identity to the expression by identifying a and b:

What is the identity of the sum of cubes?

What Does the Algebraic Sum of Cubes Formula Mean? One of the key algebraic identities is the sum of cubes formula. Its symbol is written as a3 + b3 and is interpreted as a cube plus a cube. A3 + b3 = (a + b) (a2 - ab + b2) is how the sum of cubes formula (a3 + b3) is written.

8x^6 + 27y^3 = (2x^2)^3 + (3y)^3

We can then apply the identity to get:

(2x^2)^3 + (3y)^3 = (2x^2 + 3y)((2x^2)^2 - 2x^2*3y + (3y)^2)

This gives us the factors of 8x^6 + 27y^3 as (2x^2 + 3y)(4x^4 - 6x^2y^2 + 9y^2).

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The alternating current in an electric inductor is I = E/Z , where E is the voltage and Z = R+XLi is impendance. If E = 7(cos 50 degrees +i sin 50 degrees), R=6, and XL=4, find the current.

Answers

The value of the current 'I' for the given relation of current , impedance, and voltage  I = E/ Z is equal to I = ( 4.5 + 5.4i ) / ( 6 + 4i ).

Here R=6, and XL=4

Impedance Z = R+ XL i

⇒ Z = 6 + 4i  __(1)

Where

E = 7(cos 50 degrees +i sin 50 degrees)

Simplify the above expression to get the value of voltage E.

⇒ E = 7 ( 0.6428 + i 0.7660 )

⇒ E = 4.4996 + i( 5.362 )

⇒ E = 4. 5 + 5.4i ____(2)

Now alternating current  ,

I = E / Z

Substitute the value of E and Z from (1) and (2) we get,

⇒ I = ( 4.5 + 5.4i ) / ( 6 + 4i )

Therefore, the value of the current I is equal to ( 4.5 + 5.4i ) / ( 6 + 4i ).

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what is the area of the shaded portion in the figure? If, it is a square and the lines are parts of a circle and the side of the square is 10 unit. Give answers in terms of pi.

Answers

The area of the shaded part is 50(2-π)

What is area?

Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.

The area of the shaded part = area of a square - area of a semi circle

area of square = l× l = 10 × 10 = 10²

=100 squared units

the area of the semi circle = πr²/2

= π ×10²/2

= 50π

Therefore the area of the shaded part in term of π is 100-50π

= 50( 2-π) units

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simplify. 5+√3 / √2-√3
please give step by step! ty!

Answers

The simplified expression is (- 5√2 - 5√3 - √6 - 3).

What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is the expression as -

(5 + √3) / (√2 - √3)

The given expression is -

(5 + √3) / (√2 - √3)

We can write -

{(5 + √3) x (√2 + √3)} / {(√2 - √3) x (√2 + √3)}

{5(√2 + √3) + √3(√2 + √3)} / (√2² - √3²)

(5√2 + 5√3 + √6 + 3) / (- 1)

- (5√2 + 5√3 + √6 + 3)

- 5√2 - 5√3 - √6 - 3

Therefore, the simplified expression is (- 5√2 - 5√3 - √6 - 3).

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A new refrigerator comes in a box shaped like a rectangular prism. The base of the box measures 4 feet by 5 feet. The total surface area of the box is 148 square feet.
What is the height of the box in feet?

Answers

The height of the box in feet is 6 feet.

What is surface area of rectangular prism?

The surface area of a rectangular prism is the overall region or area that is covered by all of its faces. A three-dimensional shape is a rectangular prism. It has six faces, each of which is rectangular in shape. Consequently, a rectangular prism's two bases must likewise be rectangles.

The surface area of the rectangular prism is given by the formula:

A = 2(wl + hl + hw)

Substitute the value of A = 148, l = 4 and w = 5:

148 = 2((5)(4) + (4)h + (5)h)

148 = 40 + 8h + 10h

148 = 40 + 18h

108 = 18h

h = 6

Hence, the height of the box in feet is 6 feet.

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(1 point) if (1)=−2, (5)=−7, and ∫51()=−8, evaluate the integral ∫51′().

Answers

Combining the given information, ∫51′() = f(5) - f(1) = -7 - (-2) = -5. , the integral of ∫51′() is equal to -5.

In order to evaluate the integral ∫51′(), we need to use the Fundamental Theorem of Calculus. The Fundamental Theorem of Calculus states that the integral of a function's derivative is equal to the function value evaluated from one point to another. For example, if f'(x) is the derivative of a function f(x), then the integral of f'(x) from x = a to x = b is equal to f(b) - f(a).

Using the given information, we can solve the integral ∫51′() as follows. We know that the derivative of our function is 1, so the integral of 1 from x = 1 to x = 5 is equal to f(5) - f(1). Therefore, combining the given information, ∫51′() = f(5) - f(1) = -7 - (-2) = -5. Therefore, the integral of ∫51′() is equal to -5.

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a five card hand of cards is dealt from a deck of 52 cards. how many ways can the hand have 3 hearts and 2 diamonds?

Answers

The number of ways to have 3 hearts and 2 diamonds in a 5 card hand is 286 * 78 = 22,308 ways.

The number of ways to choose 3 hearts from the 13 available hearts is given by the binomial coefficient C(13,3). The number of ways to choose 2 diamonds from the 13 available diamonds is given by C(13,2). The total number of ways to choose 3 hearts and 2 diamonds from the deck of 52 cards is the product of these two binomial coefficients: C(13,3) * C(13,2).

i.e.

There are 13 hearts and 13 diamonds in a deck of 52 cards.

To choose 3 hearts, we have C(13,3) = 13!/(3!(13-3)!) = 286 ways.

To choose 2 diamonds, we have C(13,2) = 13!/(2!(13-2)!) = 78 ways.

Therefore, the number of ways to have 3 hearts and 2 diamonds in a 5 card hand is 286 * 78 = 22,308 ways.

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Examine the paragraph proof. Which theorem does it offer proof for?

Segments JK and HI are parallel, segment LO intersects segment JK at point N, segment LO intersects segment HI at point M, and points N and M are between points L and O on segment LO.

Prove: ∠JNM ≅ ∠NMI

According to the given information in the image, segment JK is parallel to segment HI while ∠JNM and ∠LNK are vertical angles. ∠JNM and ∠LNK are congruent by the Vertical Angles Theorem. Because ∠LNK and ∠NMI are corresponding angles, they are congruent according to the Corresponding Angles Theorem. Finally, ∠JNM is congruent to ∠NMI by the Transitive Property of Equality.

Alternate Interior Angles Theorem
Corresponding Angles Theorem
Vertical Angles Theorem
Same-Side Interior Angles Theorem

Answers

Based on the given information, the theorem the paragraph proof offers proof for is: A. Alternate Interior Angles Theorem

What is the Alternate Interior Angles Theorem?

The Alternate Interior Angles Theorem states that when two parallel lines are intersected by a transversal (a line that intersects two or more other lines), the pairs of alternate interior angles formed are congruent.

In other words, if you have two parallel lines and a transversal intersecting them, and you draw a line segment connecting two nonadjacent interior angles on opposite sides of the transversal, then those two angles will be congruent. This is because they are alternate (they are on opposite sides of the transversal and between the parallel lines) and interior (they are inside the parallel lines).

Therefore, the theorem the paragraph proof offers is: Alternate Interior Angles Theorem.

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Answer: (A) Alternate Interior Angles Theorem

Step-by-step explanation: cyberia

which function is graphed?
(image is attached)

Answers

Option D is correct

*To Ezzz

I NEED HELP ASAP!!!! PLS HELP ME!!!!
What is the missing number in the factor tree?
A) 9
B) 8
C) 5
D) 2​

Answers

The missing factor is 9.

Option A is the correct answer.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

The factors of 360 are 10 and 36.

360 = 10 x 36

The factors of 10 are 2 and 5.

10 = 2 x 5

The factors of 36 are 4 and 9.

36 = 4 x 9

The factors of 4 are 2 and 2.

The factors of 9 are 3 and 3.

Thus,

9 is the missing factor.

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Jenny drives from London to Swindon at an average speed of 54 miles per hour.

She drives for 1 1/2 hours

Work out the distance from London to Swindon.

Answers

= 54 x 11/2
= 54 x 5.5
= 297 miles

The distance from London to Swindon is 81 miles.

What is Speed- distance Formula?Speed = Distance/TimeDistance = Speed X Time, and Time = Distance / Speed.

We have,

Jenny drives from London to Swindon at an average speed of 54 miles per hour.

Time = 1 1/2 hour = 3/2 hour

Using Speed = distance / Time

Distance = speed x time

Distance = 54 x 3/2

Distance = 27 x 3

Distance = 81 miles

Thus, the distance is 81 miles.

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Thi i a pond in the hape of a prim. It i completely full of water. Colin ue a pump to empty the pond. The level goe down by 20cm in the firt 30min. How many minute until completely empty

Answers

This is a pond in the shape of a prism. It is completely full of water. Colin has to wait for the pond to completely empty is 2hrs and 30minutes.

We have a pond which is completely filled with the water.

Area of the side face ( trapezium shaped)

= 1/2 x (1.4 + 0.6) x 2

= 2 m²

Volume = area x height (here width)

V = 2x1 = 2 m³

The level goes down by 20cm in the first 30 mins

Volume of water that will be taken down =

=0.2 x 1 x 2

=0.4 m³ ( upper water will form cuboid face)

Now,

⇒0.4 m³ water is taken out in 30 minutes

⇒1 m³ water is taken out in 30/0.4 minutes

⇒2 m³ water is taken out in 30/0.4 x 2 minutes

⇒30x2/0.4

⇒150 minutes.

So the pond will be completely empty in 150 min that is 2hrs30mins.

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Determine whether the value given below is from a discrete or continuous data set
When a car is randomly selected and weighed it is found to weigh 1628.3 kg.
a. A discrete data set because there are infinitely many possible values
b. A discrete data set because the possible values can be counted
c. A continous data set because the possible values can be counted
d. A continous data set because there are infinitely many possible values

Answers

The value given is from a continuous data set because there are infinitely many possible values.

In statistics, a discrete data set is a set of data that can only take certain values, typically whole numbers, that can be counted. A continuous data set is a set of data that can take any value within a certain range, and the values can't be counted as they are infinite in number.

In the given scenario, the weight of a car can take any value within a certain range, and there are infinitely many possible values between any two values. For example, between 1628.3 kg and 1628.4 kg, the car's weight could be an infinite number of values. Hence, the weight of the car is a continuous variable, and the given value of 1628.3 kg is part of a continuous data set.

Hence, the correct answer is d.

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a fully amortizing mortgage is made for $136,000 at 6.5 percent interest. required: if the monthly payments are $1,180 per month, when will the loan be repaid

Answers

The loan will be (ln(Time) - ln(136,000) + ln(1,180)) / ln(1 + 6.5 / 12) repaid.

What is interest ?

Interest is payment from a borrower or deposit-taking financial institution to a lender or depositor of an amount above repayment of the principal sum, at a particular rate.

Time = Loan Amount * (1 + Interest Rate / 12)^(12 * Number of Payments) / Monthly Payment

Given the loan amount ($136,000), interest rate (6.5%), and monthly payment ($1,180), we can plug these values into the formula:

Time = 136,000 * (1 + 6.5 / 12)^(12 * Number of Payments) / 1,180

To find the number of payments, we need to take the natural logarithm of both sides:

ln(Time) = ln(136,000 * (1 + 6.5 / 12)^(12 * Number of Payments) / 1,180)

ln(Time) = ln(136,000) + ln((1 + 6.5 / 12)^(12 * Number ofPayments)) - ln(1,180)

ln(Time) = ln(136,000) + 12 * Number of Payments * ln(1 + 6.5 / 12) - ln(1,180)

Next, we can isolate the number of payments on one side:

12 * Number ofPayments * ln(1 + 6.5 / 12) = ln(Time) - ln(136,000) + ln(1,180)

The loan will be (ln(Time) - ln(136,000) + ln(1,180)) / ln(1 + 6.5 / 12) repaid.

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The following is an incomplete paragraph proving that ∠WRS ≅ ∠VQT, given the information in the figure where segment UV is parallel to segment WZ.:According to the given information, segment UV is parallel to segment WZ, while angles SQU and VQT are vertical angles. Angle VQT is congruent to angle SQU by the Vertical Angles Theorem. Because angles SQU and WRS are ________ angles, they are congruent according to the ________ Angles Theorem. Finally, angle VQT is congruent to angle WRS by the Transitive Property of Equality.

Which term accurately completes the proof?

Answers

The transitive term accurately completes the proof

What is the vertical angle theorem?

According to the vertical angle theorem, the vertical angles that are created when two lines intersect are congruent. The opposing angles of two intersecting lines must be congruent, or identical in value.

Here, we have

Given: segment UV is parallel to segment WZ. According to the given information, segment UV is parallel to segment WZ, while angles SQU and VQT are vertical angles. Angle VQT is congruent to angle SQU by the Vertical Angles Theorem.

we are given a line of thought trying to prove different entities proven to be congruent by different arguments or proof.

Eventually, the two are associated using a property called transitivity. This property is used to associate A and C when A is equal to B and B is equal to C.

Hence, the transitive term accurately completes the proof.

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Consider the experiment of rolling a die, S={1,2,3,4,5,6). Let the random variable X denote the outcome. What is the variance of X? A. 6 B. 7/2 C. 35/42D. None of the above

Answers

The variance of X is (C) 35/12.

The formula for variance of a discrete random variable X is:

Var(X) = E[(X - E[X])^2] = E[X^2] - (E[X])^2

where E[X] represents the expected value of X.

To calculate the variance, we first need to find the expected value of X, which is:

E[X] = (1 + 2 + 3 + 4 + 5 + 6) / 6 = 3.5

Next, we find the expected value of X^2:

E[X^2] = (1^2 + 2^2 + 3^2 + 4^2 + 5^2 + 6^2) / 6 = 91/6

Now we can substitute the values into the variance formula:

Var(X) = E[X^2] - (E[X])^2 = 91/6 - (3.5)^2 = 91/6 - 12.25 = 35/12.

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-10
#1.
A system of equations is graphed on the grid. Which
system of equations is best represented by the graph?
10
A.
y = x + 2
y = -x - 3
y = - 3x + 1
y = 2x + 2
B.
D.
y = -x + 2
y = 2x - 3
y =
y =
x + 2
-x + 4

Answers

The equations that correspond to this situation, that is, the equations that have the value of c as 2 and -3 are: y = - 4/3x + 2 y = 2x -3. Hence, option B is the correct answer.

What is y-intercept?

The point where a graph intersects the y-axis is known as the y intercept. Any point on the y-axis has an x-coordinate of 0, is known as y intercept. Therefore, a x-coordinate of y intercept is 0.

The equation of the line is given by the following formula:

y = mx + c

where, c is the y-intercept of the line.

From the graph we can observe that the y-intercept of the red line is +2 and the y-intercept of the blue line is -3.

Hence, the equations that correspond to this situation, that is, the equations that have the value of c as 2 and -3 are:

y = - 4/3x + 2

y = 2x -3

Hence, option B is the correct answer.

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A box is in the shape of a right rectangular prism. The area of one of the bases is shown. What is the height h of the box? Use the formula V = B x h, where V is the volume of the right rectangular prism, B is the area of the base, and h is the height.​

Answers

The height of the rectangular prism is 5 feet.

How to find the height of a rectangular prism?

A box is in the shape of a right rectangular prism. The area of one of the bases is shown.

Let's find the height of the box.

Using the volume of a rectangular prism,

volume of a rectangular prism = Bh

where

B = base areah = height of the box

V = B × h

where V is the volume of the right rectangular prism, B is the area of the base, and h is the height.​

Hence,

h = V / B

h = 60 / 12

Therefore,

h = 5 ft

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Im Stuck on this question

Answers

The amount of the next 50 blogs that are expected to be of pop culture is given as follows:

20 blogs.

How to obtain the amount?

The first step in obtaining the expected amount is obtaining the proportion out of the blogs that are of pop culture, dividing the number of blogs that are of pop culture by the total number of blogs.

Considering the data in the table, the proportion is obtained as follows:

p = 26/(20 + 26 + 7 + 12)

p = 0.4.

Then, considering the proportion of 0.4, out of the next 50 blogs, the expected amount of pop culture blogs is given as follows:

0.4 x 50 = 20 blogs.

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Match each polynomial in the first column with a factoring technique in the second column. If none of the techniques can be used to factor the polynomial, select none.

Answers

The factorization case for each polynomial is listed below:

Sum and product Grouping Perfect square trinomial Difference of two squares None GCF

How to identify the factorization case of a given polynomial

In this problem we find six cases of polynomials, whose factorization case must be found. Now we proceed to show and indicate what kind of factorization case is used for each polynomial:

Case 1: z² + z - 90 (Sum and product)

z² + z - 90

z² - (- 10 + 9) · z + (- 10) · 9

(z + 10) · (z - 9)

Case 2: x² - 4 · x + 6 · x - 24 (Grouping)

x² - 4 · x + 6 · x - 24

x · (x - 4) + 6 · (x - 4)

(x + 6) · (x - 4)

Case 3: 16 · x² + 24 · x · y + 9 · y² (Perfect square trinomial)

16 · x² + 24 · x · y + 9 · y²

(4 · x + 3 · y)²

Case 4: 49 · x² - 100 · y² (Difference of two squares)

49 · x² - 100 · y²

(7 · x - 10 · y) · (7 · x + 10 · y)

Case 5: 121 · m² + 64 (None)

Case 6: 8 · x³ · y² + 4 · z³ (GCF)

8 · x³ · y² + 4 · z³

4 · (2 · x³ · y² + z³)

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PLEASE HURRY
no links please!

Answer the questions to show how Adam could find the area of the scale drawing, and then use this strategy to find the area of the electronics board.

1. What is the area of the board shown on the scale drawing? Explain how you found the area. ( 3 points)

2. How can Adam use the scale factor to find the area of the actual electronics board? remember, he used a different method than jason. ( 3 points)

3. What is the area of the actual electronics board. (4 points)

Answers

1.  The area of the scale drawing is  1800 cm².

2. We can multiply the dimensions of the drawing by the scale factor of 5.

3. The area of the actual board is 45000 cm².

What are the area and perimeter of a rectangle?

We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.

We know, The area of a rectangle is (length×width).

1. Therefore, The area of the scale drawing is (50×36) cm².

= 1800 cm².

2. Given, The scale factor is in the ratio of 5 : 1.

Therefore, The actual length is 50×5 cm = 250 cm and the width is 180 cm.

3. The area of the actual board is 250×180 = 45000 cm².

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on what interval is the function f (x) = e3x−exincreasing?

Answers

The function f(x) = e^(3x) - e^x is increasing on the interval (-∞, +∞).

On the range (-∞, +∞), the function f(x) = e^(3x) - e^x increases. This is because the exponential function e^x is increasing for all x, so the difference of two increasing functions is also increasing.

A mathematical function called an exponential function is applied in numerous instances in the real world. It is mostly used to calculate investments, model populations, and do other tasks like determining exponential growth or decay. In an exponential growth model, the quantity increases initially extremely slowly and subsequently quickly. As time goes on, the rate of change quickens.

Correct Question :

On what interval is the function f (x) = e^(3x)−e^x increasing?

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How many times more material was used to build the Hoover dam than the American falls down record your answer to the nearest whole number

Answers

57  times more material was used to build the Hoover dam than the American falls .

What is Ratio?

A ratio is a comparison between two amounts that is calculated by dividing one amount by the other. The quotient a/b is referred to as the ratio between a and b if a and b are two values of the same kind and with the same units, such that b is not equal to 0. Ratios are represented by the colon symbol (:). As a result, the ratio a/b has no units and is represented by the notation a: b.

Given:

Volume of Hover dam = 4 x [tex]10^6[/tex]

Volume of American Falls dam = 7 x [tex]10^4[/tex]

So, the number of times more material used

= Volume of Hover dam / Volume of American Falls dam

= 4 x [tex]10^6[/tex] / 7 x [tex]10^4[/tex]

= 400 x  [tex]10^4[/tex] / 7 x [tex]10^4[/tex]

= 57.14

Hence, 57.14 times more material used.

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A table of data is given.


x f(x)
−2 71
−1 13
0 3
1 0.6
2 0.1
Which exponential model best represents the data?

Answers

The equation of the exponential model is f(x) = 3 * 0.2^x

What is a logarithmic or exponential function?

The opposite of an exponential function is a logarithmic function. A log function and an exponential function both use the same base. An exponent is a logarithm. f(x) = bx is how the exponential function is expressed. The formula for the logarithmic function is f(x) = log base b of x.

Given a data set:

x                                        f(x)

−2                                      71

−1                                       13

 0                                       3

 1                                      0.6

 2                                     0.1

An exponential model is represented as:

f(x) = ab^x

When x= 0 and f(x) = 3;

We have:

ab^0 = 3

This gives

a = 3

When x= 1 and f(x) = 0.6

We have:

ab^1 = 0.6

This gives

ab = 0.6

Substitute 3 for a

3b = 0.6

Divide both sides by 3

b = 0.2

Substitute b = 0.2 and a =3 in f(x) = ab^x

f(x) = 3 * 0.2^x

Hence, the equation of the exponential model is f(x) = 3 * 0.2^x

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an inverted cone has a height of 15 mm and an initial radius of 16 mm. the volume of the inverted cone is decreasing at a rate of 534 cubic mm per second, with the height being held constant. what is the rate of change of the radius, in mm per second, when the radius is 6 mm?

Answers

The rate of change of radius is 2.832 mm per second, when the radius is 6 mm.

A height of cone = 15 mm

An initial radius of cone = 16 mm

The volume of the inverted cone is decreasing at a rate of 534 cubic mm per second, with the height being held constant.

The formula of Volume of cone;

V = 1/3 πr^2h

where, r =  radius of the cone and h = height of the cone

To determine the rate of change of the radius we differentiate the volume with respect to t.

dV/dt = 2/3 πrdr/dt h

Now putting the values

534 = 2/3 × 22/7 × 6 × dr/dt × 15

534 = 3,960/21 × dr/dt

Multiply by 21 on both side, we get

3960 dr/dt = 11,214

Divide by 3960 on both side, we get

dr/dt = 2.832

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12. The volume, in cubic meters of a rectangular box can be expressed as the product of its three
dimensions and with the function V(x) = x³ - 9x² + 23x - 15. The length of the box is represented
by the expression (x - 1). Find linear expressions with integer coefficients for the width and height.
Hint: The width is greater than the height. Show your work.

Answers

The linear formulas with integer coefficients for width and height are (x - 1)(x+3)(x+4).

what is coefficient ?

A algebraic, a set, or the multiplying coefficient of a specific term in an equation have all been examples of variables in mathematics. Usually numeric, but any phrase is acceptable. If the coefficients are variables, they can also be referred to as "parameters" by themselves. A coefficient is a number multiplied by a variable. Examples of coefficients include: In the expression 14c 14c 14c, the coefficient is 14. Word g has a coefficient of 1, which doubles the element by this figure. example The coefficient is 6 because "z" is a constant and the term is defined as is 6z. The square of x's coefficient is one.

given

by long division method

x³ - 9x² + 23x - 15 / (x - 1)

= x2 + 4x + 3

( x2 + 4x + 3 ) (x - 1)

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

The linear formulas with integer coefficients for width and height are (x - 1)(x+3)(x+4).

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