if f(x)=-2x+5, find x so f(x)=3

The Probability that the student will arranged in order from shortest to tallest is 2.505210.

Probability is a branch of math which deals with the numerical description of certain events is to occur. It is the ratio of the numbers of favorable outcomes to the total number of outcomes. When solving probability problems we need to consider series of random experiments or experiments that involve several different aspects, such as drawing two cards from a deck or rolling several dice. the ability to calculate relative frequencies requires counting the number of possible outcomes of the experiment

If a class has 11 students who are to be randomly assigned seating in the order of shortest to tallest.

The total outcomes= 11! = 39916800

here the total favorable outcome is 1.so,

Probability = 1 / 39916800

                   = 2.505210

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The tower is 24 feet tall.

To solve this problem, we need to use the formula for the volume of a rectangular prism, which is V = l × w × h, where l and w are the length and width of the base and h is the height.

We are given that the side length of the base of the building is 100 feet less than the height of the building, so the height of the building is h = l + 100, where l is the side length of the base. We can substitute this expression for h into the formula for the volume of the building:

V = l × w × (l + 100) = 2 million cubic feet

Since the building is 25 times as tall as the tower, the height of the tower is h = (1/25) × h = (1/25) × (l + 100). Substituting this expression for h into the formula for the volume of the building, we get:

V = l × w × (1/25) × (l + 100) = 2 million cubic feet

Solving this equation for l, we find that l = 500 feet. This is the side length of the base of the building, so the height of the building is h = l + 100 = 500 + 100 = 600 feet. The tower is (1/25) × 600 = 24 feet tall.

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141.472 N of drag force is applied in 1.6m wide and 1.4m high car travelling at 10m/s

Drag force is the net force in the direction of flow experienced by any item moving through a fluid and is caused by pressure and shear stress forces acting on the surface of the object.

Formula of drag force is given by:

[tex]F_d = \frac{1}{2}C_dAPv^2[/tex]

where

[tex]F_d[/tex] = drag force (N)

[tex]C_d[/tex] = drag coefficient (1.05 for moving car)

P = density of fluid (1.2 kg/m3 for air at NTP)

v = flow velocity (m/s)

A = characteristic frontal area of the body

A = height * width

=> 1.6*1.4

so A=2.24 [tex]m^2[/tex]

and v=10 m/s

so [tex]F_d[/tex] = 1/2* 1.05 * 2.24 *( 1.2 *10*10)

=> 0.5*1.05*2.24 *122

=> 143.472 N

so [tex]F_d[/tex]  = 143.472 N

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Answer:

98 yd²

Step-by-step explanation:

diagonal = 7 · 2 = 14 yd

side = x² + x² = 14²

2x² = 196

x² = 196/2

x² = 98

x = √98

area = √98² = 98 yd²

56 * (28/5) shows how the distributive property can be used to evaluate 7 times 8 and four-fifths.

7 times 8 = 56

4/5 = 28/5

Using the distributive property:

7 * 8 * (4/5) = (7 * 8) * (4/5) = 56 * (4/5) = 56 * (28/5) = 56 startfraction 28 over 5 endfraction

The distributive property states that for any numbers a, b, and c, a * (b + c) = a * b + a * c. To evaluate 7 times 8 and four-fifths, we can use the distributive property to separate the two factors. First, we calculate 7 times 8, which is equal to 56. Then, we calculate four-fifths, which is equal to 28/5. We then use the distributive property to multiply the two factors together, which is (7 * 8) * (4/5). This simplifies to 56 * (4/5) which is equal to 56 startfraction 28 over 5 endfraction.

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Answer:

Below

Step-by-step explanation:

The change rate at the top of the mt is given as - 2.5 ° / hr

 at the base it is 1/5th of this number

1/5 * -2.5   =  - 0.5 °C  per hour

I would prefer leaving the answer as a radical number as √5 since it is a shorter form and exact form of the answer.

My reasons for leaving it as a radical form or a decimal approximation are;

1) If we are trying to find an exact answer, then we should leave it as √5. For example, if we are told a square has an area of 5 square units, then it means that the exact length of the side is √5 units.

2) If √5 is the length of an object that has to be made to that specific length, then we would require an approximation. For example, if you are asked to make a square out of cardboard whose area is 5 square feet, then we will definitely need an approximation of √5 ft = 2.24 ft, which would help us make each side of the cardboard square in the length of 2.24 ft.

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Equation that represents the height of parasail (y) based on the speed of the motorboat (x) is given by y sinβ = Xt

What is parasail?

A kind of sports game where a person climbs in a parachute and the parachute is tied to a moving motorboat.

Generally, parasail is tied with a motorboat by a special chord. The position of chord of parasail is not properly perpendicular to the direction of boat moving on. There is an angle between the chord and horizontal surface of motorboat.

Let the angle is denoted by β

The vertical height of parasail over the boat=h

the length of chord that means distance from boat to the parasail = y

speed of boat = X

As per trigonometric formula, opposite/ hypotenuse = sinβ

                                        sinβ = h/y

   hence, height of parasail over the boat surface, h= y sin β

                             Now, from the height, speed and time equation

                          height = speed × time

 at time t, the height of parasail ysinβ  which attached to a boat of speed X can be represent by the equation.

             y sinβ = Xt

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[tex]17 - \frac{9}{7} j[/tex]

[tex]14 - 4 - \frac{6}{7} j - \frac{3}{7} j[/tex]

[tex]17 - \frac{6}{7} - \frac{3}{7}j [/tex]

[tex]17 - \frac{9}{7} j[/tex]

The multiplicative rate of change of the exponential function is 1.5

A geometric sequence is a sequence in which each term is found by multiplying the preceding term by the same value.

The general form of the geometric sequence is an=a1r(n−1),

where r is the common ratio

a1 is the first term

n is the placement of the term

Now, use the geometric sequence formula to solve for the rate:

an=a1r^(n-1)

6.75=4.5r^(2-1)

6.75=4.5r

6.75/4.5=r

r= 1.5

and if you want to make sure just multiply each number by 1.5 and see if it gets you the next number

4.5 4.5×1.5=6.75 (holds true)

6.75 6.75×1.5=10.125 (holds true)

10.125 10.125×1.5=15.1875 (holds true)

15.1875

1.5 is the multiplicative rate.

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Answer:

no. Only Lin is right.

Step-by-step explanation:

As you can see, 2.5 and d are multiplied with each other. To get rid of the 2.5, though, you’d have to do the inverse operation, which is division.

The expected number of colleges to which the student is admitted .2344

The number of possible arrangements for a given set is calculated mathematically, and this process is known as permutation. Simply said, a permutation is a term that refers to the variety of possible arrangements or orders. The arrangement's order is important when using permutations.

Examples of permutations include arranging persons, digits, numbers, alphabets, letters, and colours. Examples of combinations include choosing the menu, the cuisine, the clothes, the subjects, and the team.

Let X= college to which student is admitted

We are given with n=7 and p=1/6

P(X=2)=⁷P₂[tex]\frac{1}{6^{2} }(1-\frac{1}{6}) ^{7-2}[/tex]

=.2344

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The gold, silver, and bronze medals can be awarded in 720 ways.

What is Permutation?

The permutation is the number of ways to arrange the specified number of things out of the total available number of things, it is calculated by using excel function(=PERMUT(r, n)).

Given data,

n=10, r=3

Number of ways   gold, silver, bronze can be awarded to 10 finalists is = nPr =10P3

=720

720 ways gold ,silver and bronze can  be arranged.

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The coefficient of determination (also known as the R-squared) is a measure of the proportion of the variance in the dependent variable (the y-variable) that is explained by the independent variable (the x-variable).

It is denoted by r-squared and typically takes values between 0 and 1. A value of 0 indicates that the independent variable does not explain any of the variance in the dependent variable, while a value of 1 indicates that the independent variable explains all of the variance in the dependent variable. The coefficient of determination (also known as the R-squared) is a measure of the proportion of the variance in the dependent variable (the y-variable) that is explained by the independent variable (the x-variable). A higher R-squared value indicates a stronger regression relationship between the two variables.

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Answer: B

Step-by-step explanation:

y = 72.49x0.50

Answer:

B

Step-by-step explanation:

edge2023 and because i said so ;)

The correct option is A: A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries undefined, 0, negative 1, negative 2.

The given function is;

f(x) = StartRoot x EndRoot , which is written as;

f(x) = √x  

Domain for the  x   = [ 0 , ∞ )

x     f(x)

-1   undefined

0     0

1      1

4     2

The reflection over x-axis.

f(x) ---->  - f(x)

x     f(x)

-1   undefined

0     0

1      -1

4     -2

Thus, the correct option is; A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries undefined, 0, negative 1, negative 2.

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The complete question is-

Which represents the reflection of f(x) = StartRoot x EndRoot over the x-axis?

A: A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries undefined, 0, negative 1, negative 2.

B: A 2-column table has 4 rows. The first column is labeled x with entries negative 1, 0, 1, 4. The second column is labeled f (x) with entries 1, 0, undefined, undefined.

C: On a coordinate plane, an absolute value graph starts at (0, 0) and goes down and to the left through (negative 4, negative 2).

D: On a coordinate plane, an absolute value graph starts at (0, 0) and goes down and to the right through (2, negative 4).

Answer:

D

Step-by-step explanation:

Edge 2023

Answer:

500 grams

Step-by-step explanation:

you doubled the people, so you would need to double the flour.

Answer: ≈0.71

Step-by-step explanation: The real decimal would be 0.70710678118655. Yes, I know it is a big number. So, after doing some calculations, I got 0.5, remember we need to find the square root of 0.5. So, after finding that, I got 0.70710678118655. Which, your answer wants it to be rounded, so it would be D: ≈0.71

Amal has seven CDs, whereas the Jacksons have eleven, with the Jacksons owning four more than Amal. They have a total of 18 CDs.

Given that,

4 more CDs belong to Jackson than Amal. They have 18 CDs altogether.

We have to find what number of CDs does Amal own and Jackson has how many CDs.

We know that,

Let amount of CD Jackson have x.

Let Amal have CD has y.

So,

x=y+4

x-y=4 ----->equation(1)

x+y=18 ------>equation(2)

So, now we have to solve the equations.

Adding equation(1) and equation(2)

x-y=4

x+y=18

-----------

2x=22

x=22/2

x=11

So, substitute x=11 in equation(1)

11-y=4

-y=4-11

-y=-7

y=7

Therefore, Amal have 7 cd and the Jackson have 11 cd when 4 more CDs belong to Jackson than Amal. They have total 18 CDs altogether.

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Answer:

[tex]1. = \frac{18}{12} [/tex]

[tex]2. = \frac{39}{30} [/tex]

[tex]3. = \frac{5}{15} [/tex]

[tex]4. = \frac{18}{14} [/tex]

[tex]5. = \frac{13}{20} [/tex]

The equation in slope-intercept form to model the cooking time in minutes, y, for x patties is y = (3/2)x + 1.

What are lines and their slopes?

We know lines have various types of equations, the general type is

Ax + By + c = 0, and the equation of a line in slope-intercept form is

y = mx + b.

Where slope = m and b = y-intercept.

the slope is the rate of change of the y-axis with respect to the x-axis and the y-intercept is the (0,b) where the line intersects the y-axis at x = 0.

Given,  On a box of chicken patties state that one patty should be cooked for 2.5 minutes in the microwave.

If more than one patty is cooked, an additional 1.5 minutes should be added per patty.

So,  The equation in slope-intercept form to model the cooking time in

minutes, y, for x patties.

If we write this as y = 1.5x + 2.5 and put x = 0 , y = 2.5 which is not satisfying the given statement.

∴ y  = 1.5x + (2.5 - 1.5). (the additional patty cooking time).

y = 1.5x + 1.

y = (3/2)x + 1.

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Answer:

You are going send Christmas cards to 100 of your friends. Each box of Christmas cards contains 15 cards and the cost per box is $17.00. You are going to purchase enough Forever stamps from the post office to mail 100 cards. How much will it cost in total?

1box - 15 card - $17

100/15 = 6.67     (round off to 7 box since u cant buy 6.67 box)

7 * $17 = $119

Therefore, you will spend $119 to buy 7 box with a total of 105 cards.

Step-by-step explanation:

Your query has an answer of Extras charges = $999.

What does math's % mean?

In essence, percentages are fractions with a 100 as the denominator. We place the percent symbol (%) next to the number to indicate that the number is a percentage. For instance, you would have received a 75% grade if you answered 75 out of 100 questions correctly on a test (75/100).

What is the formula's percentage?

By dividing the value by the entire value and multiplying the result by 100, one may determine the percentage. The percentage calculation formula is (value/total value)100%.

Detailed explanation:

Data

Total cost: $11.325

8% state tax

$53 for license plates

$40 for an emissions inspection.

Process

1.- Determine the 8% of the car's cost.

11325 ———————— 100%

x ———————- 8%

x = (8 x 11325)/100

x = 90600/100

x = $1,066.16 in state taxes

2. Determine the entire cost.

Charges total $906 plus $53 plus $40.

= $ 999

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Answer:

The answer is x = -6 and y = -5.

Step-by-step explanation:

To solve this problem, we can use substitution. Let's first solve one of the equations in terms of the variable y, and then substitute this value into the other equation.

4x = 3y - 9

3y = 4x + 9

Since the term "3y" is present in the other equation given, we can substitute the right side of this equation (4x + 9) into the other equation for 3y. This is shown below.

6x - 3y = -21

6x - (4x + 9) = -21

6x - 4x - 9 = -21

We can simplify the left side of the equation and solve for x.

2x - 9 = -21

2x = -12

x = -6

Now, we can substitute this value for x into one of our equations to solve for y.

4x = 3y - 9

4(-6) = 3y - 9

-24 = 3y - 9

-15 = 3y

y = -5

Therefore, the correct answer is x = -6 and y = -5.

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Answer:

y = 126

Step-by-step explanation:

Answer:

x = 4°

Step-by-step explanation:

The box in the top right angle of the diagram lets us know that all of these angles equal 90°  !

To find x, we just need to do simple algebra and use the info above.

21x + 6 = 90 °

21x = 90 - 6

21x = 84

x = 84 / 21

x = 4°

The answer is A

It's multiples by 8 each time

Answer:

D

Step-by-step explanation:

y-intercept is when the line hits the y-axis, or when the x=0 on a line.

Look at the test below the axis.

y-axis = heartrate (resting)

for

x-axis = hrs of exercise per week

When x = 0, (0 hours of exercise,)  y = 80, (average resting heart rate.)Telling us the average resting heartrate pf people who do not exercise.

The value of c that satisfies the Mean Value Theorem for this problem are given as follows:

A. [tex]4\sqrt{3}[/tex]

The function for this problem is given as follows:

f(x) = x + 48/x.

The bounds of the interval are given as follows:

a = 3, b = 16.

The derivative of the function is given as follows:

f'(x) = 1 - 48/x².

The numeric value of the derivative at x = c is given as follows:

f'(c) = 1 - 48/c²

The numeric values of the functions at the bounds are given as follows:

Then the value of c is obtained as follows:

1 - 48/c² = 0/16

1 - 48/c² = 0

48/c² = 1

c² = 48

c = square root of 48.

[tex]c = \sqrt{16 \times 3}[/tex]

c = [tex]4\sqrt{3}[/tex]

Option A, as we have to be reminded that the interval is [3,16], hence the negative root is not considered.

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Answer:

The oceans – the largest CO2-reservoir

Step-by-step explanation:

The oceans absorb substantial amounts of carbon dioxide, and thereby consume a large portion of this greenhouse gas, which is released by human activity.

The ocean is a natural 'reservoir' for dissolved carbon dioxide.

We have,

The _____________  is a natural 'reservoir' for dissolved carbon dioxide.

Oceans absorb large amounts of carbon dioxide consuming a large portion of greenhouse gas such as carbon dioxide which is released by human activity.

Oceans are the largest carbon dioxide reservoir.

Thus,

The ocean is the answer.

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