help meee please i need help

Answ

Step-by-step explanation:

Answer:

1. can't answer, can only approximate

2. when f(x) = 2, x = -1

Step-by-step explanation:

We can't evaluate f(2)  because we don't have f(x), if we did, we would plug in 2 for x.

On the other hand, solve f(x) = 2 asks for what x is equal to when f(x) = 2, f(x) is just the value on the y axis in relationship with x (in short terms, the value on the y axis).

So looking at the graph, we cam see that when x = -1, f(x) = 2.

Perpendicular lines are lines that intersect and form right angles

A line is defined as the shortest distance between two points. Its equation is written in slope-intercept form as y = mx + b

Perpendicular lines on the other hand are lines that meet at a point to form a right angle. Hence we can conclude that perpendicular lines are lines that intersect and form right angles

Learn more on perpendicular lines here: https://brainly.com/question/1091880

#SPJ1

Step-by-step explanation:

Step-by-step explanation:

[tex] = \sqrt{48} [/tex]

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

[tex] = \sqrt{ {4}^{2} \times 3 } [/tex]

[tex] = \sqrt{ {4}^{2} } \times \sqrt{3} [/tex]

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

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

The answer is B.

By using the concept of circumference and all known inputs, we conclude that an arc length of 23 and a radius of 15 is equal to 23/15 radians.

According to the statement, arc length (s) and radius (r) are given:

s = 23, r = 15

The central angle (θ), in radians, is determine by dividing the former by the latter:

θ = s/r

θ = 23/15 rad

By using the concept of circumference and all known inputs, we conclude that an arc length of 23 and a radius of 15 is equal to 23/15 radians.

To learn more on arc lengths: https://brainly.com/question/16403495

#SPJ1

Answer:

Jun Wei donated a higher percentage than Lixin

calculate it by multiplying monthly salary by 12 then divide the total donated to total earned for both people... you Will Find 6.25 % for Jun Wei but for Lixin You Will get 5.51%

i hope this helps u :)

thank u

Answer:

Step-by-step explanation:

n fluid dynamics, a vortex is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dust devil. Vortices are a major component of turbulent flow. The distribution of velocity, vorticity, as well as the concept of circulation are used to characterise vortices. Hope that gave you a clue and hope you learned something new.

The minimum or maximum value of a function is found at the vertex.

The vertex represents either the minimum or maximum point on the graph of the function.

If the quadratic function opens upward, the vertex is the minimum point, and if it opens downward, the vertex is the maximum point.

The x-coordinate of the vertex can be found using the formula x = -b / (2a), where a, b, and c are the coefficients of the quadratic function in the form ax² + bx + c.

Once you find the x-coordinate, you can substitute it back into the function to obtain the corresponding y-coordinate, which represents the minimum or maximum value of the function at the vertex.

To learn more on Functions click:

https://brainly.com/question/30721594

#SPJ7

Answer:

See below

Step-by-step explanation:

Wrong formula  ...and all of your answers are messed up too....

  F = 9/5 C + 32

re-arrange to:  

  C = 5/9 ( F-32)

    C = 5/9 (59-32) = 15 ° C

Answer:

  y = 1/4x +2

Step-by-step explanation:

The slope-intercept form of the equation for a line can be found by solving the given equation for y. It can be written directly from the slope and the y-intercept.

It is helpful to simplify the equation first, then isolate the y-variable by eliminating non-y terms from that side of the equation.

  y -4 = (1/4)(x -8) . . . . . . . given

  y -4 = (1/4)x -2 . . . . . . . . eliminate parentheses

  y = 1/4x +2 . . . . . . . . . . add 4. This is the desired form

Alternatively, you can use the given information to write the slope-intercept equation directly. The slope in the point-slope form is the multiplier outside parentheses. In y-4 = 1/4(x -8), the slope is 1/4.

The y-intercept is the point where the line crosses the y-axis. Its coordinates always have an x-coordinate of 0. That is, the given point (0, 2) tells you the y-intercept is 2.

Using the slope and intercept in the slope-intercept form, you get the equation you're looking for:

  y = mx +b . . . . . line with slope m and y-intercept b

  y = 1/4x +2 . . . . . line with slope 1/4 and y-intercept 2

In the image given, a pair of alternate exterior angles is: a° and d°.

The exterior angles that lie opposite sides along the transversal that intersects two parallel lines are said to be alternate exterior angles, which are congruent.

In the image given below, angles a and d lie alternate to each other along the transversal and are also exterior angles.

Therefore, a pair of alternate exterior angles is: a° and d°.

Learn more about the alternate exterior angles on:

https://brainly.com/question/26111088

#SPJ1

The expression that best represents the volume is (b) [tex]V = \pi (13.5)^2 (4)[/tex]

The given parameters are:

Diameter, d = 27

Height, h = 4

Start by calculating the radius using:

r = d/2

This gives

r = 27/2

r = 13.5

The volume is then calculated as:

[tex]V = \pi r^2 h[/tex]

This gives

[tex]V = \pi (13.5)^2 (4)[/tex]

Hence, the expression that best represents the volume is (b) [tex]V = \pi (13.5)^2 (4)[/tex]

Read more about volume at:

https://brainly.com/question/1972490

#SPJ1

Answer:

<CBA

Step-by-step explanation:

<CBA = 90 degrees (given)

<ADB = 90 degrees (given)

Hence They are congruent, so choose A

From the diagram below, we can tell that < ADB is congruent to <CBA.

Here, we have,

given that,

from, the given diagram, we get,

both the triangles ABD and BCA are right angle triangle.

here, we have,

angle D = 90

and angle B = 90

so, we have,

<CBA = 90 degrees (given)

<ADB = 90 degrees (given)

Hence They are congruent, so choose A.

From the diagram below, we can tell that < ADB is congruent to <CBA.

To learn more on triangle click:

brainly.com/question/29126067

#SPJ2

The total average credit card debt for  a U.S household will be $9292.

We are given that an expression which gives an approximate value of the total average credit card debt in a U.S. household (in dollars )t years after 1995

We have to find the total average credit card debt will be in the year 2004.

Number of years =2004-1995=9

t=9 years

Substitute the value of t in the given expression

Then , total average credit card debt in a U.S household will be in the year

Debt(t)=418t+5530

Debt(9)=418 * 9+5530= $9292  in 2004

Hence, in the year 2004, the total average credit card debt for  a U.S household will be $9292.

Learn more about  credit card debt

brainly.com/question/16984965

#SPJ4

Let us first define what any of these terms mean.

The mean is found by adding all the numbers in the set, and dividing the sum by how many numbers are found in the set.

> Given set {5, 12, 6, 3, 8, 16, 8, 6}, the sum of the numbers is 5 + 12 + 6 + 3 + 8 + 16 + 8 + 6 = 64. 64 ÷ 2 = 32. Thus, the mean is 32.

The median is found by finding the number in the middle of the set, and dividing it by 2. This is easy in odd numbers as there is only one number in the middle that is the same amount of numbers left and right proportionally. However, in even numbers, there are two middles to be proportional. If it as an even number, then add the 2 middles together, and divide by 2.

> Given set {5, 12, 6, 3, 8, 16, 8, 6}, this set has an even number of numbers in the set. Thus, the middles are 3 and 8. 3 + 8 = 11, and 11 ÷ 2 = 5.5. Thus, the median is 5.5.

The mode is the number that most frequently appears in the set. In this case, we have 2 frequent numbers. That is 6 and 8. They both appear 2 times separately. Thus, 6 and 8 are the modes of this set.

The range is the difference (i.e subtraction) between the largest number on the set and the smallest number on the set.

> Given set {5, 12, 6, 3, 8, 16, 8, 6}, the range is 16-3 or 13. Thus, the range is 13.

Now that we have the definitions, we can compute the other set very easily.

> Given set {2, 7, 4, 11, 12, 4, 6}, the mean is 18.

> Given set {2, 7, 4, 11, 12, 4, 6}, the median is 5.5.

> Given set {2, 7, 4, 11, 12, 4, 6}, the mode is 4.

> Given set {2, 7, 4, 11, 12, 4, 6}, the range is 10.

Hope it helped!

Answer:

D

Step-by-step explanation:

Area of Part of a Circle = (θ/360)[tex]\pi r^{2}[/tex]

We first find the area of CAB first.

Radius of CAB = AB = 6cm

θ  = 112

Area of CAB = [tex]\frac{112}{360} \pi (6)^{2} \\=\frac{56}{5} \pi cm^{2}[/tex]

Next we will find the area of FAE.

Radius of FAE = AE = 4cm

Area of FAE = [tex]\frac{112}{360} \pi (4)^{2} \\=\frac{224}{45} \pi cm^{2}[/tex]

Lastly,

Area of Shaded Region = Area of CAB - Area of FAE

= [tex]\frac{56}{5} \pi -\frac{224}{45}\pi \\=\frac{56}{9} \pi cm^{2}[/tex]

Therefore the answer is D.

The confidence interval for the mean noise at locations is (127.09,148.51).

Given noise levels at 5 airports=152,154,139,124,120

We have to find the confidence interval for the mean noise and sample mean of the data. We know that mean is the sum divided by the number of items taken.

Mean = sum of X values/n

=137.8 (calculated in figure)

s=[tex]\sqrt{(x-x bar)^{2} /n-1}[/tex]

=[tex]\sqrt{972.8/4}[/tex]

=[tex]\sqrt{243.2}[/tex]

=15.59

t value at 80% confidence level with degree of freedom 4  (5-1) is 1.533.

standard error=t value*s/[tex]\sqrt{n}[/tex]

=1.533*15.59/[tex]\sqrt{5}[/tex]

=10.71

Upper level= Mean + standard error

=137.8+10.71

=148.51

Lower level=Mean - standard error

=137.8-10.71

=127.09

Hence the confidence interval for the true mean noise is (127.09,148.51) and sample mean is 137.8.

Learn more about confidence interval at https://brainly.com/question/15712887

#SPJ4

Equilateral Triangle: All 3 sides of a Triangle are equal in length

Isosceles Triangle: Two sides of Triangle are equal in length

Scalene: Triangle has different side lengths

So, for example, when you see Q1, you estimate the length of each side and think it is Scalene Triangle because all of its sides are of different length. (You can also use a ruler to find out the side lengths if it can be used for scale)

Q2, you can say that the side lengths AC and BC look similar, so it is an Isosceles Triangle

Q6, when you look at the side lengths, you can tell it is an equilateral Triangle because all the sides are equal in length

You can try the rest and check for yourself. If you still have any doubts, you could ask me. I hope this information helps you.

Answer:

d

Step-by-step explanation:

becoz u already answered it lloll

Answer:

[tex]\huge\boxed{\sf \$ \ 38.52}[/tex]

Step-by-step explanation:

Marked price = $36.00

Sales tax = 7%

= 7% of marked price

= 7% of $36 [Key: "of" means "to multiply"]

= 7/100 * 36

= 0.07 * 36

= $2.52

= Marked price + sales tax

= $36 + $2.52

= $38.52

[tex]\rule[225]{225}{2}[/tex]

The total cost of the jacket was the amount of  $38.52. The correct answer is option (d).

To find the total cost of the jacket after adding a 7% sales tax, we need to calculate the tax amount and add it to the original price.

Calculate the tax amount:

Tax amount = 7% of $36.00

Tax amount = 0.07 × $36.00

Tax amount = $2.52

Add the tax amount to the original price:

Total cost = $36.00 + $2.52

Total cost = $38.52

Thus, the total cost of the jacket was the amount of  $38.52.

Hence, the correct answer is option (d).

Learn more about percentages here:

brainly.com/question/24159063

#SPJ3

Answer: D

Step-by-step explanation:

[tex]V=\frac{1}{3}\pi r^{2} h[/tex] is the general formula for the volume of a cone with radius r and height h.

Substituting in s for both r and h, [tex]V=\frac{1}{3}\pi s^{3}[/tex].

The first three values of g² + 3 are 3, 4, 7. The correct option is the first option 3, 4, 7

From the question, we are to determine the first three possible values of g² + 3

From the given information,

g stands for a whole number

∴ The first three values of g are 0, 1, 2

When g = 0

g² + 3 becomes

0² + 3

= 0 + 3

= 3

When g = 1

g² + 3 becomes

1² + 3

= 1 + 3

= 4

When g = 2

g² + 3 becomes

2² + 3

= 4 + 3

= 7

Hence, the first three values of g² + 3 are 3, 4, 7. The correct option is the first option 3, 4, 7.

Learn more on Evaluating an expression here: https://brainly.com/question/21074275

#SPJ1

[tex]2x - 15 \leqslant 5 \\ 2x \leqslant 20 \\ x \leqslant 10[/tex]

[tex]\Huge\boxed{x\leq10}[/tex]

To solve for [tex]x[/tex], you need to isolate it on one side of the equation.

Start by adding [tex]15[/tex] to both sides.

[tex]\begin{aligned}2x-15+15&\leq5+15\\2x&\leq20\end{aligned}[/tex]

Now, divide both sides by [tex]2[/tex] for the final answer.

[tex]\begin{aligned}\frac{2x}{2}&\leq\frac{20}{2}\\x&\leq10\end{aligned}[/tex]

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\textbf{Solving for your equation:}[/tex]

[tex]\mathbf{|4x^2| - 3x - (9 - |-3x|)}[/tex]

[tex]\mathbf{= |(4)(9)|-(2)(-3)-(9-|(-3)(-3)|)}[/tex]

[tex]\mathsf{= |36| - (2)(-3)- (9 - |(-3)(-3)|)}[/tex]

[tex]\mathbf{=36 - (2)(-3) - (9 - |(-3)(-3)|)}[/tex]

[tex]\mathbf{= 36 -(-6) - (9 - |(-3)(-3)|)}[/tex]

[tex]\mathbf{= 42 - (9 - |(-3)(-3)|)}[/tex]

[tex]\mathbf{= 42 - (9 - |9|)}[/tex]

[tex]\mathbf{= 42 - (9 - 9)}[/tex]

[tex]\mathbf{= 42 - (0)}[/tex]

[tex]\mathbf{= 42 - 0}[/tex]

[tex]\mathbf{= 42}[/tex]

[tex]\huge\textbf{Notice that your equation kept getting}\\\huge\textbf{getting smaller and smaller?}\\\\\\\huge\textbf{That's because we kept solving as we got}\\\huge\textbf{closer to your result and we got there}\\\huge\textbf{sooner than we thought :)}[/tex]

[tex]\huge\textsf{ANYWAY!}[/tex]

[tex]\huge\textsf{Therefore, the answer is: \boxed{\mathsf{Option\ D. 42}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

D. 0≤y≤5

Step-by-step explanation:

The range refers to how far on the y axis a function exists on a graph. This function starts at y=0 and ends at y=5, meaning you can find a point on the function for any  y-level between 0 and 5. So y is greater than or equal to 0, and is less than or equal to 5.

A: A function with a range of all real numbers goes both up and down infinitely, however this function does not go up and down infinitely so we can rule out A.

B: If y>0, the function would start above y-level 0 and go up infinitely, however this graph does not display that so we can rule out B as well.

C: C is the domain of the graph, which is how far left and right the function exists.

Answer:

for st1: It's Given

For St2: Definition

For St3: Dividing BE as BF and FE or You can write From Figure:

For St4: You can write From st3

for st5: From St 4

For St7 : They are congruent by SSS axiom

[tex] \qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star[/tex]

[tex]\textsf{ \underline{\underline{Steps to solve the problem} }:}[/tex]

[tex] \qquad❖ \: \sf \: \sin {}^{4} ( \alpha) + 2 \sin {}^{2} ( \alpha) \cos {}^{2} ( \alpha) + { \cos {}^{4} ( \alpha) }^{} [/tex]

[tex] \qquad❖ \: \sf \:( \sin {}^{2} ( \alpha) ) {}^{2} + 2( \sin {}^{2} ( \alpha))( \cos {}^{2} ( \alpha)) + {( \cos {}^{2} ( \alpha)) }^{} [/tex]

( use identity a² + 2ab + b² = (a + b)² )

[tex] \qquad❖ \: \sf \:( {\sin {}^{2}( { \alpha}) + \cos {}^{2} ( \alpha)) }^{2} [/tex]

( sin² x + cos ² x = 1 )

[tex] \qquad❖ \: \sf \: {1}^{2} [/tex]

[tex] \qquad❖ \: \sf \: {1}^{} [/tex]

[tex] \qquad \large \sf {Conclusion} : [/tex]

Value of that expression is 1

Answer:

1

Step-by-step explanation:

Just  '1'  

Drawing a scatter plot for the given values on a graphing calculator, we have;

The values are;

Day; Running time

1; 8.2

2; 8.1

3; 7.5

4; 7.8

5; 7.4

6; 7.2

7; 7.1

Entering the above values in a graphing calculator, we have;

Therefore;

0 = -8.36 + y-intercept

The equation found using the statistics function for scatter plot on a calculator is therefore;

Learn more about scatter plots here:

https://brainly.com/question/2605413

#SPJ1