Mathematics High School

Round the answer to the nearest cent.

A 30% discount on $47.50 is $

Answers

Answer 1
The answer I came out with is 14. 25 rounded
Answer 2

Answer:

14. 25

Step-by-step explanation:

Related Questions

True or false All equilateral triangles are isosceles

Answers

Answer:

  TRUE

Step-by-step explanation:

When all sides are the same length, at least one pair of sides is the same length.

Answer:

the answer is true

Step-by-step explanation:

What is the approximate distance between the points (-3,-4) and (-8,1) on a coordinate grid ?

Answers

[tex]\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\ \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~ -3 &,& -4~) % (c,d) &&(~ -8 &,& 1~) \end{array} \\\\\\ d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[-8-(-3)]^2+[1-(-4)]^2}\implies d=\sqrt{(-8+3)^2+(1+4)^2} \\\\\\ d=\sqrt{(-5)^2+5^2}\implies d=\sqrt{50}\implies d=\sqrt{25\cdot 2}\implies d=\sqrt{5^2\cdot 2} \\\\\\ d=5\sqrt{2}[/tex]

The temperature, T , of a given mass of gas varies inversely with its volume, V . The temperature of a certain gas with volume of 105 cm 3 is 30º C. What will be the temperature of the gas when it is compressed to a volume of 84 cm 3? 18.8º C 48º C 24º C 37.5º C

Answers

we know that

if the temperature T of a given mass of gas varies inversely with its volume V 
then
T=k/V

Step 1
Find the value of k
for T=30º C and V=105 cm³
we have 
T=k/V--------> k=T*V--------> k=30*105=3150 °C*cm³

therefore
for V=84 cm³
T=3150/84=37.5 °C

the answer is 37.5 °C

Final answer:

The temperature of a gas can be calculated using the formula for inverse variation, which is T1*V1 = T2*V2. By substituting the given values into the formula, we can find that the temperature of the gas when it is compressed to a volume of 84 cm^3 is 37.5ºC.

Explanation:

To solve this problem, we can use the formula for inverse variation:

T1*V1 = T2*V2

Given that T1 = 30ºC, V1 = 105 cm^3, and V2 = 84 cm^3, we can solve for T2:

T2 = (T1*V1)/V2 = (30*105)/84 = 37.5ºC

Therefore, the temperature of the gas when it is compressed to a volume of 84 cm^3 will be 37.5ºC.

Given: line segment AB is 10 inches long. Find the length of A'B' if AB is dilated to form A'B' with a scale factor of 1 2 . A) 1 2 inches B) 5 inches C) 10 inches D) 20 inches

Answers

ANSWER

[tex]|A'B'| = 5 \: units[/tex]



EXPLANATION

The formula for calculating the scale factor is


[tex]k = \frac{image \: length}{object \: length} [/tex]
Or

[tex]k = \frac{ |A'B'| }{ |AB|} [/tex]




Where k is the scale factor.



We were given
[tex] |A'B'|=10[/tex]


This is the image length.


We substitute the scale factor and the image length in to the formula to get,



[tex] \frac{1}{2} = \frac{ |A'B'| }{ 10} [/tex]
Multiply both sides by 10 to get,



[tex] \frac{1}{2}\times 10= |A'B'|[/tex]



[tex]|A'B'| = 5 \: units[/tex]

Answer:

Option (b) is correct.

The length of  A'B'  is 5 inches.

Step-by-step explanation:

Given : line segment AB is 10 inches long. AB is dilated to form A'B' with a scale factor of [tex]\frac{1}{2}[/tex]

we have to find the length of  A'B'

Dilation of a figure is the increase or decrease in the length of the figure by a fixed scaling factor.  if scaling factor is greater than 1 , then figure size increases, and if  scaling factor is less than 1 , then figure size decreases.

Here, scaling factor is  [tex]\frac{1}{2}[/tex] which less than 1 , so line segment A'B' decreases.

New image = scaling factor × original image

that is A'B' = [tex]\frac{1}{2}\times 10=5[/tex]

Thus, the length of  A'B'  is 5 inches.

Option (b) is correct.

PLZZ HELP ME I WILL GIVE YOU THE BRAINLESS PERSON I GIVE YOU 12PTS

Please describe in detail using your vocabulary terms, directions, and the number of steps to explain how the pre-image became the image in this picture. Type your answer in a word document and upload it to this dropbox for me to grade. (5 pts)

Answers

From the pre-image, the pentagon is reflected across the Y axis. From the second pentagon that was reflected across the Y axis is another reflection across the X axis.

A reflection across an axis is when the image is flipped over that axis that is mentioned. This is happening two times starting with the original. First it crosses the Y axis which will be flipping it to the left. The X values in the original ordered pair would all be the opposite of the original.

Then it is reflected across the X axis which would be flipping it down. This time the y values end of the ordered pair would all be the opposite from the previous figure.
Final answer:

The pre-image becomes the image in a picture through transformations such as translation, rotation, reflection, or dilation.

Explanation:

The pre-image is the original figure before any transformations. The image is the new figure after a transformation has been applied to the pre-image. In this picture, the pre-image became the image through translation, rotation, reflection, or dilation.

Translation: The pre-image is moved in a specific direction without changing its shape or size.Rotation: The pre-image is turned around a fixed point by a certain angle.Reflection: The pre-image is flipped across a line to create the image.Dilation: The pre-image is either enlarged or reduced in size.

By applying one or more of these transformations to the pre-image, it can become the image in the picture.

Learn more about Transformations here:

https://brainly.com/question/11709244

#SPJ12

the area of a trapezoid is 72.8 square feet. the length of one of its bases is 7.4 feet and the length of its other base is 10.8 feet. what is the height of the trapezoid?

Answers

[tex]\bf \textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}\quad \begin{cases} a,b=\stackrel{parallel~sides}{bases}\\ h=height\\ --------\\ A=72.8\\ a=7.4\\ b=10.8 \end{cases}\implies 72.8=\cfrac{h(7.4+10.8)}{2} \\\\\\ 72.8=\cfrac{18.2h}{2}\implies \cfrac{72.8\cdot 2}{18.2}=h[/tex]

Evaluate the expression Arcsec(sqrt 2). Do not use your calculator to answer this question. Do not express answer in decimals.

Answers

pi/4 radians  
You're looking for the angle that has a secant of sqrt(2). And since the secant is simply the reciprocal of the cosine, let's take a look at that.
 sqrt(2) = 1/x
 x*sqrt(2) = 1
 x = 1/sqrt(2)
 Let's multiply both numerator and denominator by sqrt(2), so
 x = sqrt(2)/2 
 And the value sqrt(2)/2 should be immediately obvious to you as a trig identity. Namely, that's the cosine of a 45 degree angle. Now for the issue of how to actually give you your answer. There's no need for decimals to express 45 degrees, so that caveat in the question doesn't make any sense unless you're measuring angles in radians. So let's convert 45 degrees to radians. A full circle has 360 degrees, or 2*pi radians. So:
 45 * (2*pi)/360 = 90*pi/360 = pi/4 
 So your answer is pi/4 radians.

Item 14
POSSIBLE POINTS: 5
The total cost of repairing a car is the sum of the amount paid for parts and the amount paid for labor. You paid $132 for parts and $65 for each hour of labor. The total cost to repair the car was $229.50. How many hours did it take to repair the car?

Which equation best models this problem? Let x = number of hours worked

229.5 – 65 = 132x

132x + 65 = 229.5

132 + 65x = 229.5

132 + 65 = 229.50x

Answers

Lets work out the problem from the beginning. Let [tex]x[/tex] be the number of hours worked. We know that you paid $65 for each hour, and remember that the numbers of hours worked is [tex]x[/tex], so you paid for those hours [tex]65x[/tex]. We also know that you paid $132 for parts, a total cost of $229.5, so:
parts + worked hours = total cost 
[tex]132+65x=229.5[/tex]
And now that we have our equation from the model, lets solve for [tex]x[/tex] to find how many hours took to the repair the car:
[tex]65x=229.5-132[/tex]
[tex]65x=97.5[/tex]
[tex]x= \frac{97.5}{65} [/tex]
[tex]x=1.5[/tex]

We can conclude that it took 1 and a half hour to repair the car.

What is the length of the base of a right triangle with an area of 20 m² and a height of 4 m? A.5 m B.10 m C.80 m D.160 m

Answers

to find the length, follow the equation l(w) = a

l or b = length or base
w or h = width or height
a = area

b x h = a
b x (4) = 20
4b = 20
4b/.4 = 20/4
b = 20/4
b = 5

A. 5m is your answer

hope this helps

How to tell if a scatter plot is positive or negative or no ttend?

Answers

If the dots are going to the right, it's positive. If they're going to the left, they're negative.
And if the dots are both sides, there is no trend.

$394.63781 Round to the nearest dollar

Answers

Hello,

Here is your answer:

The proper answer to your question is "$390.00

Here is how:

394.63781=$390

Your answer is $390!

If you need anymore help feel free to ask me!

Hope this helps!
$395 would be your answer
.6 is higher than .4 so the dollar amount would go up one.
hope this helps

​ Quadrilateral ABCD ​ is inscribed in this circle. What is the measure of angle C? Enter your answer in the box.

Answers

Answer:

[tex]m<C=62\°[/tex]

Step-by-step explanation:

we know that

In an inscribed quadrilateral opposite angles are supplementary

so

In this problem

[tex]m<D+m<B=180\°[/tex]

[tex]m<C+m<A=180\°[/tex]

step 1

Find the value of x

[tex]m<D+m<B=180\°[/tex]

substitute the values and solve for x

[tex](x+20)\°+(3x)\°=180\°[/tex]

[tex]4x=180\°-20\°[/tex]

[tex]x=160\°/4=40\°[/tex]

step 2

Find the measure of angle A

[tex]m<A=(2x+38)\°=2(40\°)+38\°=118\°[/tex]

step 3

Find the measure of angle C

[tex]m<C+m<A=180\°[/tex]

substitute the values and solve for m<C

[tex]m<C+118\°=180\°[/tex]

[tex]m<C=180\°-118\°=62\°[/tex]

A farmer has 300 ft of fencing with which to enclose a rectangular pen next to a barn. The barn itself will be used as one of the sides of the enclosed area.



What is the maximum area that can be enclosed by the fencing?

Enter your answer in the box.


ft²

Answers

Let
y------> the length of the rectangle
x-----> the width of the rectangle

we know that
perimeter of the rectangle=2*[x+y]

Since the barn is used as one of the sides (let's say y) we can subtract y
we don't need fencing for this side
That makes the perimeter 2x + y
Since we have 300 feet of fencing
we set these equal:
 2x + y = 300-------> y=(300-2x)------> equation 1

area of the rectangle=x*y
substitute the equation 1 in the area formula
Area=[(300-2x)]*x-----> Area=(-2x²)+300x

This is a quadratic equation
Since the leading coefficient is negative (-2) we know it opens downward 
We are looking for the x-coordinate of the highest point called the vertex

using a graph tool
see the attached figure

the vertex is the point (75,11250)
that means for x=75 (width of the rectangle)

the area is 11250 ft²

the answer is
the maximum area that can be enclosed by the fencing is 11250 ft²


Answer:

The Answer is 11250 ft~

Step-by-step explanation:

I did the test and got it correct

.help thanks please :)

Answers

the first one, bc=ef

Use the clues to find the mystery number.
It is greater than 37,493.
It is less than 37,503.
It is an even number.
The value of the mystery number rounded to the nearest ten is less than the mystery number.
The value of the mystery number rounded to the nearest thousand is greater than the mystery number.

The mystery number is

Answers

the number is 37,500

can you please help me thank you you will be given brainley

Answers

Vertex W corresponds to vertex Z; V corresponds to V, and Y corresponds to Y. Hence
  ΔZVY ≅ ΔWVY . . . . . . corresponds to the 2nd selection

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Answers

We write the expression:
 ((2 ^ (1/2)) * (2 ^ (3/4))) ^ 2
 We use for this case the properties of lso exponents:
 ((2 ^ (1/2)) * (2 ^ (3/4))) ^ 2
 ((2 ^ (2/2)) * (2 ^ (6/4)))
 ((2 ^ (1)) * (2 ^ (3/2)))
 ((2 ^ (1 + 3/2))
 ((2 ^ (5/2))
 answer:
 ((2 ^ (5/2))
 option 2

What’s the answer to this problem???

Answers

rewrite the equation into slope intercept form:
8y = -5x+16

divide everything by 8 to get just y
y = -5/8x+2

 the slope = -5/8

Why are epidemics and pandemics a relatively recent phenomenon in human history?

Answers

For the greater part of man's opportunity on earth, populaces were little, scattered, and subordinate after chasing and assembling. Those infectious diseases that influenced people were either the consequence of unplanned contamination by zoonoses or lethargic contaminations that maybe had developed with people from their primate precursors. It was just because of the rural upheaval 6,000 to 8,000 years back and the resulting development of inactive populaces sufficiently substantial to help microorganisms particularly subordinate upon human has that epidemics and pandemics seem to have moved toward becoming piece of man's life (Cockburn 1963)

FAST HELP!! 30 POINTS!!!

what type of solutions do the methods for solving systems of equations find and how does this relate to setting the equations equal to each other

Answers

substitution method and elimination method. And how does it relate to setting equal to each other? It's where the two graphs intersect is where they have in common

Final answer:

Explanation of solutions for systems of equations and how setting equations equal to each other helps find solutions.

Explanation:

Solutions for systems of equations can be classified as unique, no solution, or infinitely many solutions. The method of setting equations equal to each other typically helps find the intersection points where the equations are simultaneously true, representing the solution to the system.

Factor this expression completely and then place the factors in the proper location on the grid. Note:
Place factors alphabetically in the grid! mn - 4 m - 5 n + 20

Answers

First we are going to group the terms that contains the common factor [tex]m[/tex] in one parenthesis, and the other ones in another parenthesis:
[tex]mn-4m-5n+20[/tex]
[tex](mn-4m)-(5n+20)[/tex]
Notice that our the terms in our first parenthesis have a common factor [tex]m[/tex], and the terms in our second one have the common factor [tex]5[/tex]. Lets factor those out:
[tex]m(n-4)-5(n-4)[/tex]
Now we have a common factor [tex](n-4)[/tex] in both terms, so we can factor those out as well:
[tex](n-4)(m-5)[/tex]

We can conclude that the completely factored expression ordered alphabetically is [tex](m-5)(n-4)[/tex].

Rowan raised $640 In a charity walk last year.this year he raised 15% more than he raised last year. How much money did Rowan raise this year?

Answers

Compute 115% of $640

1.15 × $640 = $736

Monica wants to measure the dimensions of her rectangular lawn. If the longer side of the lawn is (x + 3) feet and the diagonal length is (x + 4) feet, which function can be used to find the shorter side of her lawn?
a.] [tex]s(x)= \sqrt{2x+7} [/tex]
b.] [tex]s(x)= \sqrt{2 x^{2} +14x+25} [/tex]
c.] [tex]s(x)= \sqrt{x^{2} +7x+12} [/tex]
d.] [tex]s(x)= {x^{2} +7x+12} [/tex]

Answers

the answer is the option A

let 
y--------------- > short side 
applying the Pythagorean theorem
(x+4)²=y²+(x+3)²
y²=(x+4)²-(x+3)²-------> x²+8x+16-x²-6x-9=2x+7
y=√(2x+7)

Let us try and solve it analytically. We have that the side=x+3  together with the short side=s and the diagonal=x+4 satisfy the Pythagorean Theorem. Then we have that [tex](x+4)^2=(x+3)^2+s^2[/tex]. This yields [tex]s^2+x^2+6x+9=x^2+8x+16[/tex]
which yields s^2=2x+7, hence a) is the correct answer.

El Generico public high school got a new flagpole. But they completely forgot to buy a cord and NO ONE knows how tall the flagpole is! To find out, they decided to use similar figures! As the sun was setting, Bob the janitor set up a 5-foot stick next to the flagpole and compared shadows. The 5-foot stick cast an 8-foot shadow. The shadow of the flagpole was 32-feet long.

Use rules of similar polygons to figure out how tall the flagpole is!

Answers

According to the rule of similar polygons the ratio of corresponding sides of two polygons will be the same. So in this case the ratio of original length and shadow of a stick and ratio of length of flagpole and its shadow will be the same.

Length of Stick = 5 feet
Shadow of Stick = 8 feet
Shadow of flagpole = 32 feet
Length of flagpole = x = ? 

Using rule of similar polygon we can write,

[tex] \frac{5}{8}= \frac{x}{32} \\ \\ \frac{5}{8}*32=x \\ \\ x=20 [/tex]

Therefore, the length of flagpole will be 20 feet.



The speed of an object in space is shown in the graph.






What is the slope of the line?
10
15
20
25

Answers

(6-3)/(0.4-0.2)
= 15

the slope of the line = 15
the answer is B.

Answer:

Option B is correct

15

Step-by-step explanation:

Formula for slope is given by:

[tex]\text{Slope} = \frac{y_2-y_1}{x_2-x_1}[/tex]

As per the statement:

Form the graph:

Consider two points:

(0.2, 3) and (0.4, 6)

then;

[tex]\text{Slope} = \frac{6-3}{0.4-0.2}[/tex]

⇒[tex]\text{Slope} = \frac{3}{0.2}[/tex]

⇒[tex]\text{Slope}= 15[/tex]

Therefore, the slope of the line is, 15

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Answers

What you must do for this case is to rewrite the expression carefully to find the correct answer.
 You must respect the subtraction of fractions.
 Group the terms correctly.
 Factor when necessary.
 Answer
 option 1
 See attached graph.

look at the picture below // 99 points // PLEASEE HELPP

Answers

It would be D right? Because they are obviously congruent, parallel and the same length. Just an educated guess..
Is given that the figure on the problem is a square, and we know that the square's sides are congruent or have the same length.

•The correct answer is letter D, Yes, the opposite sides are parallel, and all sides are the same length.

PLEASE HURRY
Line segment CT contains the point C(−2, 5) and a midpoint at A(1, −3). What is the location of endpoint T? T(4, −11) T(3, −8) T(5, −1) T(−0.5, 1)

Answers

Point A is the midpoint of CT which means the ratio of CA:CT would be 1:2.
To find CT, you need to find the distance of CA then applies 2 times of the distance to the point C

Xca= Xa-Xc= 1- (-2)= 3
Yca= Ya- Yc= -3 -5= -8

Xt= Xc + 2* Xca= -2 + 2*3= 4
Yt= Yc + 2* Yca= 5 + 2*-8= -11
T(Xt, Yt)= T(4, -11)

The coordinate for point T would be (4, -11)

If you were offered a job would you choose the one with the pay increase according to an arithmetic sequence formula or a geometric sequence formula? Justify your response.

Answers

I believe it would be the one with the Geometric sequence formula

Final answer:

For maximizing earning potential over time, a geometric sequence salary increase is typically more beneficial due to exponential growth, while an arithmetic sequence offers steady, predictable increases that may appeal to those who value consistency.

Explanation:

If offered a job with a salary increase tied to either an arithmetic sequence or a geometric sequence, the preferable option typically depends on the long-term financial goals and growth potential you are looking for. An arithmetic sequence will give you steady, predictable increases. However, a geometric sequence formula will often result in larger increases over time, especially if the ratio is 2 or more. Due to the exponential nature of a geometric sequence, your salary could grow significantly faster than with an arithmetic sequence. For example, if you start with a salary of $50,000, and the arithmetic sequence increase is $1,000 each year, after five years you would be earning $55,000. On the other hand, for a geometric sequence with a modest ratio of 1.05 (5% increase each year), you would start at the same $50,000 but after five years be earning approximately $63,814.

Considering this, if your primary goal is to maximize earning potential over time, the geometric sequence would be the more appealing option. However, if you value consistency and predictability in pay increases, or if the progression starts very low, an arithmetic sequence might be more in line with your personal financial planning.

The tables below show two functions. For each set of data:
a) Determine whether the data represents a linear function, exponential function or neither and explain why.
x f(x)
-2 18
-1 22
0 26
1 30
2 34
x g(x)
-2 2
-1 4
0 8
1 16
2 32







Rubric:
Points Concept Addressed
/2 Correctly determines whether each table represents linear, exponential or neither
/2 Correctly explains their answer.

Answers

The first table, representing f(x), is linear.  The data have a constant rate of change or slope:
(between the first two points):  m = (y₂ - y₁)/(x₂ - x₁) = (22-18)/(-1--2) = 4/(-1+2) = 4/1 = 4.  The rate of change  between any two points is the same:
(between the last two points):  m = (34-30)/(2-1) = 4/1 = 4.

The second table, representing g(x), is exponential.  The data points are multiplied by the same constant between successive points.  2*2 = 4; 4*2= 8; 8*2 = 16, etc.
Other Questions
Which temperatures are equal? 212 F/100 C 180 F/60 C 70 F/40 C 32 F/0 C The aim of much italian baroque art was to restore the predominance of ____. In 1800, Napoleon led his reserve army across the Alps into Italy to fight Austrian forces that had laid siege to Genoa. Although Genoa had fallen by the time Napoleon had reached it, the crossing led to a series of important military victories for Napoleon. The two paintings of Napoleon portray the same historic event: a military campaign that began with the crossing of the Alps. What would you predict the campaign's outcome was based on these paintings? Use details from the paintings to support your answer. What was the result of the six day war which was fought in 1967 ROYGBIV is an a. Acronymic sentence c. Flashcard b. Acronymic abbreviation d. None of these Which organelle is the primary site of atp synthesis in eukaryotic cells?a. lysosomeb. vacuolec. mitochondriond. peroxisome? In a hypothetical population of 1000 frogs there exists a gene, d, with two alleles (d and d). 280 of the frogs are homozygous dominant (dd), and 220 are homozygous recessive (dd). what is the frequency of heterozygotes in the population? (will mark brainliest)what is the mood, and word choice in this non fiction article.In 1752, Benjamin Franklin had a theory that lightning was electricity. He wanted to prove that the power could be transferred to other objects. He grabbed a kite and experimented on a stormy afternoon. Franklin believed that thunder clouds contained electrical charges. His plan was to fly the kite into the clouds so that electricity passed down the wet kite string. With his son, William, as his assistant, he went to work. First, he tied an iron key to the silk kite string. Next, he ran a metal wire from the key into a jar designed to store electrical charges. Once the kite was in the air, he stood in a barn to keep safe and dry. Soon, electrical charges from the clouds passed into the kite. They traveled along the wet string, to the key, down the wire, and into the jar. When Franklin reached his hand toward the key, he received a mild shock. The electricity had been captured and transferred. The experiment was a success. At least it was for Benjamin Franklin. Other scientists were killed trying to duplicate his efforts. Looking back, it was not the safest way to test his theory. In this case, it worked out, and paved the way for future discoveries about electricity. What is the climax of "The Circuit"? A. The family works together to pack their belongings into the car. B. The narrator's teacher offers to teach him to play the trumpet. C. The narrator and his brother work the field with their father. D. The narrator feels nervous and alone on the school bus. Why are the Jews locked in the synagogue for 24 hours? What role did technological advances play in propelling American migration all the way to the Pacific ocean A girl throws a 2 kg rock with a net force of 6 N. What is the acceleration of the rock?12m/s0.33m/s8m/s3m/s In an attempt to pay back their student loans a bit faster, mary and bob commit identity theft and impersonate others so they can use their credit cards. the government prosecutes them but loses due to lack of evidence. after more evidence surfaces, the government attempts to prosecute mary and bob again. in doing so, it may be violating which amendment? how did industrialization affect where people lived? See pic attached ... Urgent In what way is the area that makes up the country of Germany different now than it was in 1648? Which explains how to determine 40% of 50? What is the mixed number form for 56.4? Another name for the Office Button menu is the toolbar. Please select the best answer from the choices provided T F In the early 1800s, what was the usual reason for working class children to be separated from their family? Being captured Going to school Going overseas Being indentured