The product of 3 and the difference of a number and 8

Answer:

Step-by-step explanation:

(3n³ + 2n)² = 9n^6 + 12n^4 + 4n^2

(4k² + 2k³) = 2k²(2 + k)

(3y²-y')' = 6y-y''

(4c+30) = 2(2c+15)

(2b² * b)² = 4b^6

(2gh²)* = 2gh^2

(6w³)² = 36w^6

The given information describes a pair of congruent triangles. The corresponding vertices, angles, and sides of the triangles are congruent. The congruent angles are ∠REM ≅ ∠MOC, ∠ERM ≅ ∠MCO, and ∠CMO ≅ EMR. The congruent sides are ER ≅ CO, MO ≅ EM, and CM ≅ RM. The congruent triangles are ΔMER ≅ ΔMOC.

1) the corresponding vertices are

R ~ C and

E ~ 0

2) The corresponding angle are

∠E ~∠O  and

∠ R ~ ∠C

3)

The corresponding sides are;

ER ~ CO;

MO ~ EM

CM ~ RM

4)  the congruent angles are:

∠REM ≅ ∠MOC

∠ERM ≅ ∠MCO

∠CMO ≅ EMR

5) the congruent sides are:

ER ≅ CO;

MO ≅ EM

CM ≅ RM

6) the congruent triangles are;

ΔMER ≅ ΔMOC

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A- Tanya's gross income for the first year was $7,940, and b- her net income was $5,840 after subtracting her total expenses.

a. To calculate Tanya's gross income for the first year, we need to multiply the rent per month by the number of months the house was rented:

Gross income from rent = $620/month x 7 months = $4,340

Tanya also paid $175/month in average expenses for the whole year, so her total expenses were:

Total expenses = $175/month x 12 months = $2,100

Adding the mortgage interest paid, Tanya's gross income for the first year was:

Gross income = $4,340 + $3,600 = $7,940

b. To calculate Tanya's net income or net loss, we need to subtract her total expenses from her gross income:

Net income = Gross income - Total expenses

Net income = $7,940 - $2,100

Net income = $5,840

Therefore, Tanya's net income for the first year was $5,840.

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f(275) represents the average number of days houses stay on the market before being sold for $275,000.

From the question, we have the following parameters that can be used in our computation:

f(p) is the average number of days a house stays on the market before being sold for price p in $1,000s

This means that

In f(275), we have

p = 275

So, the meaning is:

f(275) is the average number of days a house stays on the market before being sold for price $275,000s

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The fundamental core of mathematical activity is problem-solving.

Mathematical problems can be found in many different fields, and the process of solving these problems involves analyzing the problem, identifying relevant information, formulating a strategy or plan, executing the plan, and checking the solution to ensure it is correct and complete.

This process of problem-solving is central to all areas of mathematics, and is a key skill that can be applied to many different contexts both inside and outside of mathematics.

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With this strategy, the ball will travel approximately 28.98 meters horizontally before it hits the ground.

To solve this problem, we will need to find the time of flight and the horizontal velocity. We can use the following kinematic equations:

Vertical motion:

Maximum height: h = (v^2 * sin^2(angle)) / (2 * g)

Time of flight: t = 2 * v * sin(angle) / g

Horizontal motion:

Range: R = v * t * cos(angle)

Given:

Initial velocity (v) = 20 m/s

Angle = 45 degrees

Acceleration due to gravity (g) = 9.81 m/s²

Calculations:

Convert angle to radians: 45 degrees = 45 * (π/180) = 0.785 radians

Calculate time of flight: t = 2 * 20 * sin(0.785) / 9.81 = 2.04 seconds

Calculate horizontal range: R = 20 * 2.04 * cos(0.785) = 28.98 meters

So, with this strategy, the ball will travel approximately 28.98 meters horizontally before it hits the ground.

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A ball is thrown with an initial velocity of 20 meters per second at an angle of 45 degrees with respect to the horizontal. How far does the ball travel horizontally (range) before it hits the ground? Assume no air resistance.

Step-by-step explanation:

lets call the line (d)

amd the given eq of the line is (d')

so (d) is perpendicular to (d')

slope(d)×slope(d')=-1

-2(1/2)=-1

so (d): y=1/2x + b

point A (4, -3) belongs to (d) so,

Ya=1/2Xa+b

-3=1/2(4)+b

b=-5

(d):y=1/2x-5

The perimeter of a square is the sum of its sides and they are all equal, so to obtain the length of each of them we divide the perimeter of the first fence between 4:

[tex]\text{P1}= \dfrac{\text{64 feet}}{\text{4 sides}}[/tex]

[tex]\text{P1}= 16 \ \text{feet}[/tex]

Then, the length of each side of the second fence will increase 2 feet at each end, as shown in the figure. We have then that the perimeter of the second fence is:

[tex]\text{P2 = 20 feet} \times \text{4 sides}[/tex]

[tex]\text{P2 = 80 feet}[/tex]

The sum of the perimeters of both fences is:

[tex]\text{PT = P1 + P2}[/tex]

[tex]\text{PT = 64 feet + 80 feet}[/tex]

[tex]\text{PT = 144 feet}[/tex]

Total cost = $1.26 x 144 feet

Total cost = $181.44

The total cost of the fences was $181.44

It is true. The trigonometric identity  [tex]\frac{cscx+secx}{sinx + cosx}[/tex] = cotx + tanx

To verify that (cscx+secx)/(sinx + cosx) = cotx + tanx

csc = [tex]\frac{1}{sin}[/tex]  and Sec = [tex]\frac{1}{cos}[/tex]

If we insert the values, it would be

[tex]\frac{ 1/sinx + 1/cosx}{sinx + cosx}[/tex]

= [tex]\frac{cosx + sinx}{sinx * cosx}[/tex] ÷  ([tex]\frac{1}{sinx + cosx}[/tex])

= [tex]\frac{1}{sinx * cosx}[/tex]

[tex]\frac{Sin^2 x + Cos^2x}{Sin x Cos x}[/tex]  =  [tex]\frac{Sin^2x}{SinxCosx}[/tex]  +  [tex]\frac{Cos^2x}{SinxCosx}[/tex]

= cotx + Tanx

Mind you

cotx = [tex]\frac{1}{tanx}[/tex] = [tex]\frac{cosx}{sinx}[/tex]

tanx = [tex]\frac{sinx}{cosx}[/tex]

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The number 2 is the one for which the theoretical probability matches the experimental probability.

To determine which number has a theoretical probability that matches the experimental probability, we need to calculate both the theoretical and experimental probabilities for each of the four numbers.

The theoretical probability of spinning any one of the four numbers is 1/4, or 0.25. This is because there are four equally likely outcomes, and each outcome has a probability of 1/4.

To calculate the experimental probability, we need to count the number of times each number was spun and divide by the total number of spins. Here are the results:

- Number 1 was spun 9 times out of 28 spins, so its experimental probability is 9/28, or approximately 0.321.

- Number 2 was spun 7 times out of 28 spins, so its experimental probability is 7/28, or approximately 0.250.

- Number 3 was spun 6 times out of 28 spins, so its experimental probability is 6/28, or approximately 0.214.

- Number 4 was spun 6 times out of 28 spins, so its experimental probability is 6/28, or approximately 0.214.

To find the number that has a theoretical probability that matches the experimental probability, we can compare the theoretical probability to each of the experimental probabilities. The number that has an experimental probability that is closest to the theoretical probability of 0.25 is number 2, which has an experimental probability of approximately 0.250.

Therefore, the number 2 is the one for which the theoretical probability matches the experimental probability.

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The solution of the system of equations given y = -6x + 5 and 4x - y = 5,  is (1, -1).

To solve this system of equations, we can use the substitution method. We can rearrange the first equation to solve for y in terms of x:

y = -6x + 5

Next, we can substitute this expression for y in the second equation:

4x - (-6x + 5) = 5

Simplifying this equation, we get:

4x + 6x - 5 = 5

Combining like terms, we get:

10x = 10

Dividing both sides by 10, we get:

x = 1

Now that we have the value of x, we can substitute it back into one of the original equations to solve for y. Using the first equation, we get:

y = -6(1) + 5 = -1

Therefore, the solution of the system of equations is (1, -1). This means that the two equations intersect at the point (1, -1) on the coordinate plane, and this is the only point that satisfies both equations simultaneously.

In summary, to solve the system of equations y = -6x + 5 and 4x - y = 5, we used the substitution method to find that the solution is (1, -1).

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Answer:

D

Step-by-step explanation:

When a number is 5 or more you round up, but when it's 4 or lower you don't round at all. So, when you round the 8, in answer D, you get 6 making the answer 18.96.

The equation is given as y = -x + 8

The purpose of an equation is to find the value of the variable that makes the equation true. Equations are used in various fields of mathematics and science to represent relationships between different quantities and to solve problems.

To create an equation that represents the relationship between x and y in the table, we need to first determine the pattern or trend in the data.

From the given data, we can see that as x increases by 2, y decreases by 2. This suggests that there is a linear relationship between x and y.

Using the two points (-2,10) and (0,8), we can find the slope:

m = (y2 - y1) / (x2 - x1) = (8 - 10) / (0 - (-2)) = -1

Now that we have the slope, we can use any point on the line to find the y-intercept. Let's use the point (0,8):

8 = (-1)(0) + b

b = 8

Therefore, the equation that represents the relationship between x and y in the table is:

y = -x + 8

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The mean of the data set is 82.77

If we want to find the mean, we would have to put it at the back of our minds that the mean is the same as the average. As such, we would have to take the sum of all the values that have been listed in the data set and divide by the total number of the data.

The first step is to arrange the data set orderly from smallest to largest;

70, 71,79, 82,88,85,87,91,92

We have nine values in the data set thus the mean is;

70+71+79+82+88+85+87+91+92/9= 745/9= 82.77

Hence the mean of the data set is 82.77

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The probability of winning the jackpot with one ticket is approximately 0.000000003724.

There are a total of C(41, 5) ways to choose five numbers from 41 white balls, and there are 35 possible choices for the gold ball.

Therefore, the total number of ways to win the jackpot is:

C(41, 5) * 35

And the total number of possible outcomes (i.e. all the combinations of 5 white balls and 1 gold ball) is:

C(41, 5) * 35 * C(5, 5)

Since there is only one winning combination, the probability of winning the jackpot is:

1 / (C(41, 5) * 35)

Plugging in the values, we get:

1 / (749,398,832 * 35) = 1 / 26,869,866,120

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Step-by-step explanation:

The number of non square numbers between 12square and 13square are

1. The rule states that the product of the lengths of the two segments of one chord equals the product of the lengths of the two segments of the other chord (i.e., (a1 x a2) = (b1 x b2), where a1 and a2 are segments of chord A, and b1 and b2 are segments of chord B).

2. The rule states that the product of the length of the external segment of one secant and the length of the entire secant equals the product of the length of the external segment of the other secant and the length of the entire secant (i.e., (e1 (e1 + i1)) = (e2 (e2 + i2)), where e1 and e2 are the external segments and i1 and i2 are the internal segments).

3.  The rule states that the square of the length of the tangent segment equals the product of the length of the external segment of the secant and the length of the entire secant (i.e., t^2 = e * (e + i), where t is the length of the tangent segment, e is the external segment, and i is the internal segment).

The three rules of segments are:

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The cash payback period for the project is 4.7 years.

The cash payback period is a financial metric that calculates the amount of time it takes for a project to generate enough cash flows to recover the initial investment (cost). It is calculated by dividing the initial investment by the estimated annual net cash flows.

Decimal refers to a system of numbers based on the number 10, where each digit represents a different power of 10. It is a way of expressing numbers using a decimal point to separate the whole number from the fractional part.

Given:

Estimated annual net cash flows = $55,800

Initial investment (cost) = $262,260

Cash Payback Period = Initial Investment / Estimated Annual Net Cash Flows

Putting the values:

Cash Payback Period = $262,260 / $55,800

Calculating the cash payback period:

Cash Payback Period = 4.7 years (rounded to one decimal place)

Therefore, the cash payback period for the project is 4.7 years.

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The point (1, 8) would then represent that the babysitter charges $8 per hour

The point (1, 8) in this situation could mean that the babysitter charges $8 for one hour of work.

In general, when working with a fee-per-hour situation, we can use the slope-intercept form of a linear equation, y = mx + b,

If we assume that the initial fee is $0, then the equation for the babysitter's fee would be y = mx, where m is the hourly rate.

The point (1, 8) would then represent that the babysitter charges $8 per hour, since when x = 1 (one hour of work), y = 8 (the fee for one hour).

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The value of x is 21.75.

We need to convert from mixed number to decimal number. To do this you can follow the steps shown below:

We must divide the numerator of the fraction by the denominator of the fraction.

Now we must add the quotient obtained to the Whole number part.

So, we get:

7 1/4 = 7.25

Then, the scale image that maps "Figure a" onto "Figure b" is: 1 : 7.25.

Finally, in order to find the value of "x", you need to multiply the given length of the corresponding side of "Figure a" by 7.25,

Therefore, you get that the result is:

x = 3(7.25)

x = 21.75

Hence the value of x is 21.75.

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The complete question is ;

Figure a is a scale image of figure b the scale that maps figure a onto figure b is 1:7 1/4 enter the value of x

Both figures are triangles

Figure a is smaller than figure b

Figure a to the right has a 3

Figure b to the right has a x

Answer:

a)3.68kg

b)900g

Step-by-step explanation:

a) First off we know that he weighs 4kg now and he weighed 8% less the next week. 8% of 4kg=0.32kg. We then have to subtract 0.32 kilograms from the original weight. 4-0.32=3.68

Your answer for A is 3.68 kg

b) If the baby gains 200g every two weeks, assuming it's a constant rate, he should gain 100g every week. 100*9weeks=900g.

The correct statements regarding the exponential function 3(1/3)^x is given as follows:

An exponential function has the definition presented as follows:

y = ab^x.

In which the parameters are given as follows:

The function for this problem is given as follows:

f(x) = 3(1/3)^x.

The parameter b is of 1/3 < 1, hence:

The range is all real values greater than 0, as a = 3 is positive and the function has an horizontal asymptote at y = 0.

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x = 5.5

we can solve this by using tanø formula i.e p/b

Five points on the inverse function g(x) = log₄(x) are: (1, 0), (4, 1), (16, 2), (1/4, -1/2), and (2, 0.5).

Given that

f(x) = 4^x.

To find the inverse of the function f(x) = 4^x,

We need to interchange the positions of x and y and solve for y. So, we have:

x = 4^y

Taking the logarithm base 4 of both sides, we get:

y = log₄(x)

Therefore, the inverse of the function f(x) = 4^x is g(x) = log₄(x)

To find five points on the inverse function g(x), we can choose five x-values and find the corresponding y-values:

If x = 1, then g(x) = log₄(1) = 0, so the point is (1, 0).

If x = 4, then g(x) = log₄(4) = 1, so the point is (4, 1).

If x = 16, then g(x) = log₄(16) = 2, so the point is (16, 2).

If x = 1/4, then g(x) = log₄(1/4) = -1/2, so the point is (1/4, -1/2).

If x = 2, then g(x) = log₄(2) ≈ 0.5, so the point is (2, 0.5).

Therefore, five points on the inverse function g(x) = log₄(x) are: (1, 0), (4, 1), (16, 2), (1/4, -1/2), and (2, 0.5).

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The length of the guy wire should be option D √(25) ft. that is 25 ft.

Perpendicular means that two lines or objects intersect each other at a 90-degree angle, forming a right angle. This means that if you were to draw a line at the point of intersection, it would split the angles on either side of it into two equal parts. In simpler terms, if you imagine a horizontal line and a vertical line intersecting each other, they would be perpendicular to each other. The concept of perpendicularity is important in geometry and is used in many different applications, such as construction, engineering, and design.

We can use the Pythagorean theorem to find the length of the guy wire c. According to the theorem, in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. Therefore:

c² = a² + b²

Substituting the given values:

c² = (20 ft)² + (15 ft)²

c² = 400 ft² + 225 ft²

c² = 625 ft²

Taking the square root of both sides:

c = √(625) ft

c = 25 ft

Therefore, the length of the guy wire should be 25 feet.

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I believe this quadrilateral  is a parallelogram.

There are a few ways to choose within the occasion that a quadrilateral may be a parallelogram: Opposite sides are parallel: Within the occasion that inverse sides of a quadrilateral are parallel, at that point it may be a parallelogram.

Inverse sides are said to be consistent: On the off chance that inverse sides of a quadrilateral are consistent, at that point it may be a parallelogram. From the image attached , you can see the both side red are marked equal hence it is a parallelogram

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Answer:

the first one

Step-by-step explanation:

you move N to the left of the equation,

and then K to the right of the equation.

voila.

If the yard is 2000 feet², both companies will charge the same price.

In mathematics, the word "amount" is a broad one that refers to the size or quantity of something, typically given as a numerical value.

It can be used in a number of circumstances where there is a concern with money, measurements, or the quantity of an item.

We must assume both organisations' expenses to be equal and then solve for the yard size to determine the point at which their costs are equal.

Let's assume that x is the yard size at which expenses are equal.

7.5x + 24.5 = 16x + 23.5

When we simplify this equation, we obtain:

0.5x = 1

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We know that with the new piece of data for the month of June the median is increased by 3.5 which is now 251.5.

The median is the value that divides a data sample, a population, or a probability distribution's upper and lower halves in statistics and probability theory.

It could be referred to as "the middle" value for a data set.

A data set's median value is the point where 50% of the data points have values that are lower or equal to it, and 50% of the data points have values that are higher or equal to it.

Arrange in ascending order:

229 234 248 255 263

When, odd terms are there then the middle term is the median:

Median: 248

New Median:

229 234 248 255 263 597

When there are even terms we will add the middle two terms and divide it by 2 as follows:

248+255/2

Median: 251.5

Median change: 251.5 - 248 = 3.5

Therefore, we know that with the new piece of data for the month of June the median is increased by 3.5 which is now 251.5.

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The measures of the angles are

MSR = 42

MSCQ = 138 degree

mSQR = 318 degrees

mQV = 42 dgerres

MSCQ + MSCR = 180

MSR = MSCR = 42

MSCQ + 42 = 180

MSCQ = 138 degree

MSQR = 360 - 42

= 318 degrees

MQV = MSR vertically opposite

= 42 degree

MQSR = 1/2 x 42

= 21 degrees

MQV = 1/2 x 180 = 90 degrees

The measures of the angles have been solved for

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