Hi I don’t understand help

Hi I Dont Understand Help

Answers

Answer 1

The exact value of x is 12.97.

Describe Bisector?

In geometry, a bisector refers to a line or plane that divides a geometric figure into two equal parts. Specifically, a bisector divides an angle into two equal angles, a line segment into two equal parts, or a plane figure into two equal areas.

There are two types of bisectors:

Angle bisector: A line or ray that divides an angle into two equal angles is called an angle bisector. The point where the bisector intersects the angle is known as the vertex of the angle.

Segment bisector: A line, ray, or line segment that divides a line segment into two equal parts is called a segment bisector. The point where the bisector intersects the line segment is known as the midpoint of the line segment.

We can use the angle bisector theorem to find the value of x. According to the angle bisector theorem, the length of the segment bisecting an angle in a triangle is proportional to the lengths of the two sides adjacent to that angle.

Let's call the point where ST intersects QS point U. Then, by the angle bisector theorem, we have:

QU / QR = SU / SR

Substituting the given values, we get:

QU / 20 = x / 16

Multiplying both sides by 20, we get:

QU = (20x) / 16 = (5x) / 4

Similarly, we have:

SU / QS = TU / TR

Substituting the given values and simplifying, we get:

SU / 12 = x / 20

Multiplying both sides by 12, we get:

SU = (12x) / 20 = (3x) / 5

Now, we can use the fact that QRS is a triangle to find the remaining side length:

QR + RS = QS

20 + 16 = 12 + SU + QU

36 = 12 + (3x/5) + (5x/4)

Multiplying both sides by 20, we get:

720 = 240 + 12x + 25x

720 = 37x + 240

37x = 480

x = 480/37

So the value of x is approximately 12.97 (rounded to the nearest hundredth).

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Related Questions

X:y=1:5
Which is the correct equation?
A)y=5x
B)y=x/5
C)y=x-4
D)y=x+4

Answers

The correct equation for x:y= 1:5 is (a) y = 5x.

In mathematics, an equation is a formula that connects two expressions with the equal sign = to indicate that they are equal. The equation consists of two sentences joined by an equal sign ("="). The expressions on both sides of the equation are called the "left" and "right" sides of the equation. Usually the right side of the equation is assumed to be zero. Assuming this doesn't reduce the width because it can be done by subtracting the right side from both sides.

Compare to a scale on which a weight is placed. When the same weight of something (like grain) is placed in two pans, the two weights balance the scales and are said to be equal.

According to the Question:

Given that:

x:y = 1:5

We can write the equation as:

   x/y = 1/5

⇒ y = 5x

Therefore x:y = 1:5 is y=5x

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2.2.3 b for which -x²+8x+20=b will have real roots​

Answers

Answer:

second that -x is the correct answer



-2+5 what is the answer

Answers

Answer:

3

start from -2 and count up 5

-2,-1, 1, 2, 3

-2
-1, 0, 1, 2, 3
-2+5 =3

Problem 2: If the garbage company in a city with a population of
1.3 x 10^5 collects approximately 14,300 pounds of garbage per week,
how much garbage per person will they collect in one year?

Answers

the garbage company in the city will collect approximately 5.72 pounds of garbage per person in one year.


To calculate how a lot garbage in step with man or woman the garbage enterprise collects in 12 months, we want to find out how many weeks are in a yr and then divide the overall amount of garbage collected in a 12 months by means of the population of the town.
wide variety of weeks in a year: 52 (assuming there aren't any bounce years)
overall amount of garbage collected in a 12 months: 14,three hundred kilos/week x fifty two weeks = 743,600 kilos/12 months
garbage in keeping with character in line with year: 743,six hundred kilos/12 months ÷ 1.three x 10^5 people = 5.72 kilos/person/yryr


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. h= 1.5 inches; r = 4 inches
. h = 4 inches; r = 3 inches
(I did the first two but the other two are confusing please someone help)

Answers

Answer:

3. 75.4 and 4. 113.1

Step-by-step explanation:

Okay to find the volume of the cylinder the equation is πr⌃2h

3. so if H is 1.5 and r = 4 it would be π4⌃2(1.5) = 75.4 approx.

4. If h is 4 and r is 3 it would be π3⌃2(4) = 113.1 approx.

Suppose that the functions s and t are defined for all real numbers x as follows.
s(x)=3x+1
T(x)=6x
Write the expressions for (t-s)(x) and (t+s)(x) and evaluate (t x s)(4)

Answers

to evaluate (t x s)(4), we substitute x = 4 into the expression for (t x s)(x). This gives us (18x + 6)|x=4, which simplifies to 72 + 6 = 78.

(t-s)(x) = 6x - (3x+1) = 3x - 1

(t+s)(x) = 6x + (3x+1) = 9x + 1

(t x s)(4) = (6x)(3x+1)|x=4 = (18x + 6)|x=4 = 72 + 6 = 78

First, we need to define the functions s and t given by s(x)=3x+1 and t(x)=6x. We can then use these functions to calculate (t-s)(x) and (t+s)(x). To calculate (t-s)(x), we subtract s(x) from t(x). This gives us 3x - 1. To calculate (t+s)(x), we add s(x) and t(x). This gives us 9x + 1. Finally, to evaluate (t x s)(4), we substitute x = 4 into the expression for (t x s)(x). This gives us (18x + 6)|x=4, which simplifies to 72 + 6 = 78.

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On Thursday afternoon the temperature fell by 3°C. On Friday it had risen by 5°C.
If Thursday morning
s temperature was - 4°C, what was the temperature on Friday?

Answers

Answer:

Thursday morning temperature was -4 degrees Celsius.

Thursday afternoon temperature dropped by 3 degrees.

So Thursday afternoon's temperature was:- -4 - 3 = -7

On Friday, the temperature had risen by 5 degrees Celsius

So -7 + 5 = -2 degrees Celsius

A student is selected at random to work a problem on the
board.
What is the probability that the student selected is a female
junior?
0.15
0.25
0.20
0.50

Answers

I am not sure but i think this should be the answer i hope its correct :)
Sophomore 2/7
Junior 5/11
Senior 5/7

Find f(10) for this piecewise-defined function.
f(x) = { -4x + 1 if x < 3
{2/5x -3 if x > 3


Write your answer as an integer or as a fraction in simplest form.
f(10) =

Answers

Answer:

-39

Step-by-step explanation:

I cannot provide picture, but plug 10 in for x for both equations

-4(10)+1 = -39         -39 less than 3? yes

2/5(10)-3 = 1       1 is greater than or equal to 3? no

the value of y when f(10) is -39

since when you plug 10 in for x -39 is the result

Which of the following sets of ordered pairs represents a function?
((1, 2), (2.1), (2, 2))
((1.2). (2. 1), (0.2))
c ((0.1), (1.0), (0.2))
((-1, 2), (0, 3), (-1, 4))

Answers

2 option is Correct for  sets of ordered pairs represents a function

The only set of ordered pairs that represents a function is (b), which can also be written as {(1.2, 2), (2, 1), (0.2, 0)}. To be a function, each input (x-value) must correspond to exactly one output (y-value). In set (a), the input value of 2 is associated with two different output values, so it is not a function. Set (c) has two input values that both correspond to the same output value, so it is not a function. Set (d) has two different input values that both correspond to different output values, so it is not a function.

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Find the area. Leave your answer in simple radical form.

Answers

Therefore, the area of the pentagon is 928 square units.

length

Length is a measure of the size or extent of an object or a distance between two points. It refers to the longest dimension of an object or the distance between two points in space, typically measured in units such as inches, centimeters, meters, or miles. In mathematics, length is also used to describe the size of a line segment or a curve, which can be measured using various techniques such as Euclidean distance, arc length, or fractal dimension. Length is an important concept in many fields, including physics, engineering, geometry, and statistics.

Find the area.

Pentagon

apothem = 16 side = 23.2

Note: When necessary, enter your answer as a decimal If it is not a terminating decimal, round to the nearest hundredth

For the first question, we need more information to find the area of the triangle. Knowing the apothem and one side is not enough. We also need to know the number of sides of the triangle or the length of another side or the height.

For the second question, the formula to find the area of a regular pentagon is:

Area = (perimeter x apothem)/2

Since we are given the apothem and the side, we can find the perimeter of the pentagon as:

perimeter = 5 x side = 5 x 23.2 = 116

Substituting the values in the formula, we get:

Area = (116 x 16)/2 = 928

Therefore, the area of the pentagon is 928 square units.

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Nihkil surveyed `20` students at his middle school and `13` of them had at least one sibling. There are `300` students at Nikhil’s middle school. If the rest of the school is consistent with these results, about how many students would have at least one sibling?

Answers

About 195 students at Nikhil's middle school would have atleast one sibling.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

We can use proportion to estimate the number of students at Nikhil's middle school who have at least one sibling.

If 13 out of 20 students surveyed have at least one sibling, we can assume that the same proportion applies to the entire school.

So, we can set up a proportion as follows:

13/20 = x/300

where x is the number of students in the entire school who have at least one sibling.

Solving for x, we can cross-multiply and get:

13 * 300 = 20 * x

x = (13 * 300)/20

x = 195

Therefore, about 195 students at Nikhil's middle school would have at least one sibling.

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Solve the following simultaneous equations using an algebraic method.
4x - 7y = 15
5x - 2y = 12

Answers

Answer:

4x −7y=21

x+2y=99

Explanation

4x - 7y = 15

5x - 2y = 12

First equation times 2:

8x - 14y = 30

Second equation times 7:

35x - 14y = 84

Subtract,

27x = 54

x = 54/27 = 2

2y = 5x - 12 = 10 - 12 = -2

y = -1

Answer: x=2, y = -1

Check:

4(2)-7(-1)=8+7=15, good

5(2) -2(-1) = 10 + 2 = 12, good

ax + by = c    

dx + ey = f

has solutions

x = (ce-bf)/(ae-bd), y = (a f-cd)/(ae-bd)

4x - 7y = 15    

5x - 2y = 12

has solutions

denom = ae-bd = 4(-2) - (-7)(5) = 27

x = (15(-2) - (-7)(12))/27 = (-30 + 84)/27 = 2

y = (4(12)-15(5))/27 = (48-75)/27 = -27/27 = -1

Answer:

  (x, y) = (2, -1)

Step-by-step explanation:

You want to solve this system of equations using an algebraic method:

4x -7y = 155x -2y = 12

Cross multiplication method

Writing these equations in general form and making an array of coefficients with the x-coefficient repeated, we get the equations and array ...

4x -7y -15 = 05x -2y -12 = 0

  [tex]\begin{array}{cccc}4&-7&-15&4\\5&-2&-12&5\end{array}[/tex]

Working from the left calculating determinants of pairs of columns, we have ...

  ∆ = 4(-2) -5(-7) = 27

  ∆x = -7(-12) -(-2)(-15) = 54

  ∆y = -15(5) -(-12)(4) = -27

The variable values are ...

  x = ∆x/∆ = 54/27 = 2

  y = ∆y/∆ = -27/27 = -1

The solution is (x, y) = (2, -1).

__

Additional comment

The graph confirms this solution.

The "cross multiplication method" is useful when the coefficients are such that elimination or substitution involves more arithmetic operations than the minimum. The amount of math involved in calculating the x- and y-values is on par with what would be required for "elimination." The method is substantially equivalent to "Cramer's Rule."

3) a baseball team had 80 players show up for tryouts last year and this year had 96 players show up for tryouts. find the percent increase in players from last year to this year.

Answers

The percent increase in players from last year to this year = 20%

We know that the formula for the percentage change a quantity is :

(P) = [Final value - Initial value] / Initial value x 100

Here, a baseball team had 80 players show up for tryouts last year and this year 96 show up for tryouts.

initial number of players = 80

current number of players = 96

So, using above formula the percent increase in players is:

P = [(96 - 80) / (80)] x 100

P = (16 / 80) x 100

P = 0.20 x 100

P = 20%

Therefore, the percentage of increase in players =  20%.

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21. A triangle with area 5 cm² is
dilated with a scale factor of 3.
What is the area of the image, in
square centimeters?

Answers

The area of the dilated triangle is 45 squared meters

What is the area of the triangle?

Dilation is a geometric transformation that involves resizing a shape while maintaining its shape and proportions. The scale factor is the ratio of the size of the image to the size of the original shape.

In this problem, we are given a triangle with an area of 5 cm², and we are asked to find the area of the dilated triangle when it is scaled up by a factor of 3. To find the area of the dilated triangle, we need to use the formula for the area of a triangle, which is 1/2 * base * height.

When a triangle is dilated by a scale factor of k, both its base and height are multiplied by k. This means that the area of the dilated triangle is k^2 times the area of the original triangle. In this case, the scale factor is 3, so the area of the dilated triangle is 3^2 times the area of the original triangle.

Therefore, the area of the dilated triangle is 9 times the area of the original triangle, which is 9 * 5 cm² = 45 cm².

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Are these triangles similar, congruent, or neither? What theorem supports the answer?
options:

Similar: SSS


Similar: SAS


Similar: AA


Congruent: SAS


Congruent: ASA


Congruent: AAS


Neither

Answers

Answer:

Similar: SAS

Step-by-step explanation:

The triangles are not congruent( they're not the equal) but the are similar because they form vertical angles that are congruent and their corresponding side lengths are in proportion

a 6 foot ladder is leaning against a wall. if the top of the ladder slides down the wall at a rate of 2 feet per second, how fast is the bottom moving along the ground when the bottom of the ladder is 2 feet from the wall?

Answers

When the bottom of the 6-foot ladder is 2 feet from the wall, the bottom is moving along the ground at 1 foot per second.

To find the rate at which the bottom of the ladder moves along the ground, we can use the Pythagorean theorem and related rates. Let x be the distance from the bottom of the ladder to the wall, and y be the height of the ladder on the wall. The Pythagorean theorem is x² + y² = 36.

Differentiating both sides with respect to time (t) gives 2x(dx/dt) + 2y(dy/dt) = 0. We are given that dy/dt = -2 ft/s, and we need to find dx/dt when x = 2 feet.

To find y, we can use the Pythagorean theorem: 2² + y² = 36, so y² = 32, and y = 4√2. Plugging these values into the differentiated equation, we get 2(2)(dx/dt) + 2(4√2)(-2) = 0. Solving for dx/dt, we find that dx/dt = 1 ft/s.

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I need help filling in the blanks

Answers

Values of x for blanks 4 , 1 in inequality .

What in mathematics is an inequality number?

A relationship between two values in an algebraic statement that are not equal is shown by an inequality. One of the two variables on the two sides of the inequality can be represented by an inequality sign as greater than, greater than or equal to, less than, or equal to another value.

                              Despite the equals sign being substituted by an arrowhead, the formula 5x 4 > 2x + 3 resembles an equation. It serves as an illustration of inequity. This shows that the left half, 5x 4, is bigger than the right part, 2x + 3.

-3x/4 < 12/1

x < -16

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a raffle has a grand prize of a european cruise valued at $9000 with a second prize of a rocky point vacation valued at $1300. if each ticket costs $3 and 11200 tickets are sold, what are the expected winnings for a ticket buyer?

Answers

The expected winnings for a ticket buyer is $0.8036.

The given details are:

Grand prize = $9000

Second prize = $1300

Cost of each ticket = $3

Total tickets sold = 11200

Expected winnings are calculated by finding the expected value. Expected value is calculated by multiplying each outcome by its probability and then adding the products.

The total amount collected from selling 11200 tickets will be:

Total amount collected = 11200 × $3 = $33,600

Probability of winning grand prize = 1/11200

Probability of winning second prize = 1/11200

Probability of losing = 1 - (1/11200 + 1/11200) = 1 - 2/11200 = 11200/11200 - 2/11200 = 11198/11200

Expected value = probability of winning grand prize × grand prize + probability of winning second prize × second prize + probability of losing × zero

Expected value = (1/11200) × $9000 + (1/11200) × $1300 + (11198/11200) × 0 = $0.8036

The expected winnings for a ticket buyer is $0.8036.

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Which expression is NOT equivalent to the others?

Answers

The expression -(12 x - 6) + 18 is not equivalent to the other expressions.

What is expression?

Expression is a combination of words or symbols that communicate an idea, thought, opinion, or feeling. Expressions can be literal or figurative, and they often contain multiple layers of meaning. Expressions can be used to express emotions, opinions, beliefs, and values, and they are integral to communication and understanding.

This is because when all of the expressions are evaluated, the result of each expression is different. For example, when the expression -6(2 x - 4) is evaluated, the result is -24.

When the expression -4(3 x + 6) is evaluated, the result is -24. When the expression -3(4 x - 3) + 15 is evaluated, the result is -3. However, when the expression -(12 x - 6) + 18 is evaluated, the result is 12.

Therefore, the expression -(12 x - 6) + 18 is not equivalent to the other expressions.

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Complete questions as follows-
Which expression is not equivalent to the other expressions?
-6(2 x - 4)
-4(3 x + 6)
-(12 x - 6) + 18
-3(4 x - 3) + 15

Write the equation that is parallel to y = -3x + 7 and passes through the point (2, -1). Write your answer in slope intercept form.

Answers

The equation of the line parallel to y = -3x + 7 and passing through the point (2, -1) is y = -3x + 5, written in slope-intercept form.

How to Write an Equation of a Line in Slope-intercept Form?

The given equation is in slope-intercept form y = mx + b, where m is the slope and b is the y-intercept.

The slope of the given equation is -3, which means any line parallel to it will have the same slope.

Using the point-slope form of a linear equation, we can write the equation of the line passing through the point (2, -1) and having a slope of -3:

y - y1 = m(x - x1) where (x1, y1) = (2, -1) and m = -3

y - (-1) = -3(x - 2)

y + 1 = -3x + 6

y = -3x + 5

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Robyn, a programmer, had a few important !les saved on her computer. The space occupied by the !les was 84.6 megabytes in all. If each !le used a memory of 21.15 megabytes, how many !les were there

Answers

Robyn has 4 important files saved on her computer.

To solve this problem, we can use a simple formula that relates the total space occupied by the files to the size of each file:

Total space occupied = Size of each file x Number of files

In this case, we know the total space occupied (84.6 megabytes) and the size of each file (21.15 megabytes), so we can rearrange the formula to solve for the number of files:

Number of files = Total space occupied ÷ Size of each file

Plugging in the values we know, we get:

Number of files = 84.6 megabytes ÷ 21.15 megabytes per file

Simplifying this expression gives us:

Number of files = 4

Therefore, Robyn has 4 important files saved on her computer.

It's important to note that this problem assumes that each file uses exactly 21.15 megabytes of memory. In reality, file sizes can vary depending on their content, so this may not always be the case. Additionally, it's worth noting that file size can be affected by various factors such as compression and encoding, so the actual size of a file on disk may differ from its theoretical size. Nonetheless, for the purposes of this problem, we can assume that each file uses exactly 21.15 megabytes of memory.

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BC is tangent to circle D at point C. The measure of
LBDC is 35º.
What is the measure of ZDBC?


1. 35°
2. 55°
3. 90°
4. 180°

Answers

Sorry if I’m late but the answer it 55 and If not I’m sorry…

A blue car is 600 kg moving at 5m/s crashes into a red car 400 kg which is initially at rest. After the crash the two cars stick together. What is the initial momentum of the red car before the Collison

Answers

The law of conservation of momentum states that the total momentum of a closed system remains constant. In this case, the system consists of the blue car and the red car.

Before the collision, the momentum of the blue car can be calculated as:

p_blue = m_blue * v_blue
p_blue = 600 kg * 5 m/s
p_blue = 3000 kg·m/s

Since the red car is initially at rest, its momentum is zero:

p_red = m_red * v_red
p_red = 0

The total momentum of the system before the collision is therefore:

p_total = p_blue + p_red
p_total = 3000 kg·m/s + 0
p_total = 3000 kg·m/s

After the collision, the two cars stick together and move together as a single object. The final velocity of the combined object can be calculated using the law of conservation of momentum:

p_total = (m_blue + m_red) * v_final

Since the two cars stick together, their masses are added:

m_total = m_blue + m_red
m_total = 600 kg + 400 kg
m_total = 1000 kg

Solving for v_final, we get:

v_final = p_total / m_total
v_final = 3000 kg·m/s / 1000 kg
v_final = 3 m/s

Therefore, after the collision, the combined object (which is now the blue car and the red car stuck together) is moving at a velocity of 3 m/s.

To answer the question, we only need to calculate the initial momentum of the red car before the collision. As we saw earlier, the momentum of the red car before the collision was zero:

p_red = 0

Therefore, the initial momentum of the red car before the collision was zero.

What is the measure of arc c e d? 106° 108° 148° 212°

Answers

The measure of angle CED in a circle is  212°

The measurement of angles is done using basic geometric tools such as protractors and compasses. This tool helps to find precise measurements of angles. A protractor helps provide accurate measurements of angles, while compasses help construct angles. Angles are measured in three ways: degrees, radians, and revolutions.

In the given figure:

∠ EBD = 160°

and ∠ CBE = 52°

We have to tell the measure of arc CED.

Since  m( arc EBD) = 160° and m( arc CBE ) = 52°

From the figure:

m( arc CED ) = m( arc CBE ) + m( arc CBE)

= 160° + 52°

= 212°

Therefore, measure of angle CED = 212°.

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Select the expression that represents this real-world situation.

Vesi snowboards 4 hours before lunch and 3 hours after lunch each day. How many hours did she snowboard in 2 days?

4 + 3 + 2
(4 + 3) x 2
4 x 3 ÷ 2
(4 x 3) − 2

Answers

Answer:

(4 + 3) x 2

Step-by-step explanation:

In one day, Vesi would snowboard 4+3 hours, so in two days, we would multiply this by two and get the expression (4+3) * 2.

1
2
3
4
5
Complete the following sentence.
Government benefit programs have been established for a range of
TIME F
assistance.
15

Answers

Government benefit programs have been established for a range of assistance over time.

What is context of above answer?

The answer given was "Government benefit programs have been established for a range of assistance." This sentence is referring to various programs created by the government to provide support or aid to those in need.

These programs may include financial assistance, food assistance, housing assistance, medical assistance, and more. The sentence suggests that the government recognizes the importance of providing help to individuals and families who may be struggling and has taken steps to create programs to address these needs.

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Complete Question:

What types of assistance have government benefit programs been established for?

The following table is from a Earth Science reference table.

Pls show work
Thank you

Answers

By consulting these tables, you can quickly access important data and information that can help you better understand the Earth and its various processes.

Sure, I'm happy to help! Without seeing the actual table, I'm not sure what information you are looking for specifically. However, I can tell you that Earth Science reference tables often contain important information about the Earth's systems, including geology, meteorology, oceanography, and astronomy.

For example, these tables might include information on rock types, mineral identification, weather patterns, ocean currents, and celestial objects like planets and stars. They may also provide key equations and constants for various scientific calculations.

In general, Earth Science reference tables are a valuable resource for students, researchers, and professionals in the field.

If you have a specific question about the table you're looking at, feel free to let me know and I'll do my best to provide a helpful answer!

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The chart shows the number of hours each student spends training for their favorite sport per hundred hours write a proportion and make a prediction for the number of hours Simone will spend training over a 2000 hour periods

Answers

Answer:240 hours

Step-by-step explanation:100x20=2000


12/100=x/2000 multiply 12 and 100 by 20.

what type of distribution is utilized for nominal data? a gaussian b binomial c positive skew d negative skew

Answers

The type of distribution which is utilized for the nominal data is option  b. Binomial distribution.

The appropriate distribution for nominal data is a binomial distribution.

The binomial distribution is used when the data consists of two possible outcomes.

The two outcomes such as success or failure, heads or tails, or pass or fail.

In nominal data, the categories do not have any inherent order.

And there is no numerical value associated with each category.

The binomial distribution gives the probability of obtaining a certain number of successes in a fixed number of independent trials.

The required probability of success is the same for each trial.

Therefore, option b.  binomial distribution is considered as more appropriate distribution for the nominal data.

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