If you divide the circumference C over the radius r, you get 2pi
2pi = C/r
this is because
C = 2pi*r
is one formula to find the circumference. Another formula is
C = pi*d
which works because d = 2r, ie the diameter is twice the radius.
what are the solutions of x^2 - 4 = 0
It is a difference of squares, so we can factor this to
[tex](x+2)(x-2)=0[/tex]
Then, we can solve for [tex]x[/tex].
[tex]x=-2,2[/tex]
Hope this helps.
頑張って!
Solve equation.
-3x + 1 + 10x = x + 4
Answer: x=1/2
(for anyone who needs the answer)
Answer:
[tex]x=1/2[/tex]
Step-by-step explanation:
So we have the equation:
[tex]-3x+1=10x=x+4[/tex]
First, combine like terms on the left:
[tex]7x+1=x+4[/tex]
Subtract 1 from both sides. The left cancels:
[tex](7x+1)-1=(x+4)-1\\7x=x+3[/tex]
Subtract x from both sides. The right cancels:
[tex](7x)-x=(x+3)-x\\6x=3[/tex]
Divide both sides by 6:
[tex](6x)/6=(3)/6\\x=1/2[/tex]
So, our answer is 1/2
Answer:
x = 1/2
Step-by-step explanation:
-3x + 1 + 10x = x + 4 ⇒ simplify left side7x + 1 = x + 4 ⇒ subtract x + 1 from both sides7x - x = 4 - 1 ⇒ simplify6x = 3 ⇒ divide both sides by 6x = 3/6 ⇒ simplifyx = 1/2 ⇒ answerWILL MARK YOU BRAINLIEST
Answer:
26. QOR = 59 - 24
= 25
27. POS = 19+31+15
=65
28. ROS = 46 - (61-28)
= 13
If the domain of the function f(x)=2x2- 8is {-2, 3, 5}, then the range is
Answer:
{0, 10, 42}
Step-by-step explanation:
Domain is set of input values and range is set output values.
For the function f(x) = 2x² - 8 and domain set of {-2, 3, 5}
Range is:
f(-2) = 2(-2)² - 8 = 0f(3) = 2*3² - 8 = 10f(5) = 2*5² - 8 = 42Range: {0, 10, 42}
The length of a football field is 120m. what is the length on drawing, if the scale is 1:5m?
PLEASEEE HELPP ME !!! I NEED THE ANSWERS ASAP!!!
Answer:
1.
Step-by-step explanation:
Since the line segment FH bisects angle EFG, angle HFG = Half of Angle EFG.
Angle EFG = 177 - 9x. Angle HFG = 92 - 8x.
177 - 9x = 2(92 - 8x)
177 - 9x = 184 - 16x
7x = 7
x = 1.
Step-by-step explanation:
x=85 hope it helps you. mark as brilliant
Round to the nearest whole number.
432.846
Answer: 433 of course
432 is the whole number and 846 is the decimal,
the number closest to the whole number is 8
we can only round the number forward if the number is 5 or more than 5 (6,7,8,9)
so 432.856 rounds to 433
Answer:
433
Step-by-step explanation:
846 is closer to 433 than it is to 432.
So, the answer is 433.
Hope this helps!
Write an equation in slope-intercept form of the line that is a segment bisector of both AB and CD. Ay 4 B(6,3) A(-4,1) -4 -2 2. 4 6 X D(5, -1) -2 4 C1-1,-5) -6
Answer:
y = -5x + 7
Step-by-step explanation:
Given that the location of the points are:
A(-4, 1), B(6, 3), C(-1, -5) and D(5, -1)
The location of the bisector of a line is given as:
[tex]x=\frac{x_1+x_2}{2} \\\\y=\frac{y_1+y_2}{2}[/tex]
If E(x1, y1) is the bisector of segment AB then the location of E is at:
[tex]x_1 =\frac{-4+6}{2}=1 \\\\y_1=\frac{1+3}{2}=2[/tex]
Hence E is at (1, 2)
If F(x2, y2) is the bisector of segment CD then the location of F is at:
[tex]x_2 =\frac{-1+5}{2}=2 \\\\y_2=\frac{-5-1}{2}=-3[/tex]
Hence F is at (2, -3)
Hence the line that is a segment bisector of both AB and CD pass through the point (1, 2) and (2, -3).
The equation of the line is given by:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\y-2=\frac{-3-2}{2-1}(x-1)\\ \\y-2=-5(x-1)\\\\y-2=-5x+5\\\\y=-5x+7[/tex]
Answer: The equation is: y = -5x + 7.
Step-by-step explanation:
Given that the location of the points are:
A(-4, 1), B(6, 3), C(-1, -5) and D(5, -1).
Midpoint of A(-4, 1), B(6, 3) is = [tex]\left(\frac{\left(-4+6\right)}{2},\frac{\left(1+3\right)}{2}\right)=(1,2)[/tex].
Midpoint of C(-1, -5) and D(5, -1) is [tex]\left(\frac{\left(-1+5\right)}{2},\frac{\left(-5-1\right)}{2}\right)=(2,-3)[/tex].
Using point slope formula:
[tex]\frac{y-2}{x-1}=\frac{-3-2}{2-1}\\\frac{y-2}{x-1}=-5\\y-2=-5x+5\\y=-5x+7[/tex]
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Alex and his friends are studying for a geometry test and one of the main topics covered is parallel lines in a plane. They each write down what they think it means for two distinct lines in a plane to be parallel
Answer:
i rthink i understand your question but im not sure- I think you forgot to add a little bit of the question but im pretty sure your question is what is a parrllel line. IM going to answer that sorry if its wrong but im trying to be helpfull.
Step-by-step explanation:
Parallel lines are two lines that never intersect they start off beside each other and they stay where you can conect them with one line but they will never intercet.
---------
and
----------
Answer:
Literally, parallel lines are lines that extend in both directions without meeting.
The three definitions of parallel lines are correct, but Rachel's and Briana's definitions have flaws
Step-by-step explanation:
Rachel
The definition implies that two lines are said to be parallel if they are both perpendicular to another line.
This definition is correct, but the definition brings a new concept; it introduces the concept of line transversal.
Because the parallel lines can be defined without introducing the concept of line transversal (which was not part of the required definition), then we can conclude that the definition has a drawback.
Alex
Alex's definition is correct, and it has no drawback because the definition can be applied to concepts where parallel lines are used.
Briana
Here, Brianna introduced the concept of slopes.
Ideally, parallel lines have the same slope; but the concept is limited to slopes only; and cannot be applied to other concepts such as transversal of lines.
The manufacturer's suggested retail price (MSRP) for a particular car is $25,425, and it is expected to be
worth $11,730 in 5 years.
(a) Find a linear depreciation function for this car.
(b) Estimate the value of the car 7 years from now.
(c) At what rate is the car depreciating?
(a) What is the linear depreciation function for this car?
(Simplify your answer. Do not include the $ symbol in your answer.)
Answer:
(a) The linear depreciation function of the car which gives the worth of the car y after a number of years, t is given as follows;
y = 25,425 - 2,739 × t
(b) The value of the car 7 years from now is $6,252
(c) $2,739 per year
Step-by-step explanation:
The manufacture's suggested retail price (MSRP) for the car = $25,425
The amount the car is expected to be worth in 5 years = $11,730
(a) The linear depreciation is given as follows;
[tex]Depreciation \ Per \ Year \ = \dfrac{Cost \ of \, Asset - Salvage \ Value}{Life \ of \, Asset \ in \ use}[/tex]
Where;
Cost of Asset = $25,425
Salvage Value = $11,730
Life of Asset in use = 5 years
We get;
[tex]Depreciation \ Per \ Year \ = \dfrac{\$ 25,425 - \$11,730}{5} = \$2,739/year[/tex]
Therefore, the linear depreciation function, can be written as follows;
y - 25,425 = -2,739×(t - 0)
y = -2,739·t + 0 + 25,425 = 25,425 -2,739·t
y = 25,425 - 2,739 × t
Where;
y = The expected worth of the car after a given number of years
t = The number of years used for the calculation of the depreciation
(b) The value of the car 7 years from now is given by substitution as follows;
Whet t = 7, we have;
y = 25,425 -2,739·t = y = 25,425 -2,739 × 7 = $6,252
The value of the car 7 years from now = $6,252
(c) [tex]Depreciation \ Per \ Year \ = \dfrac{\$ 25,425 - \$11,730}{5} = \$2,739/year[/tex]
The car is depreciating at a rate of $2,739 per year.
A cylinder has base radius 4 feet and height 8.5 feet. Find its volume.
Write an inequality that models a real world situation. Describe your situation and what a variable X represents
Answer:
The variable X represents:
X = the number of books
The real world situation can be:
1.) Jennie reads books. She reads each books for
2.) Jennie wants to read book at least 5 books today.
Write an inequality that models the minimum number of books that Jennie needs to read.
The inequality for this situation is:
[tex]2x \: \geqslant \: 5[/tex]
Use the diagram to the right a. What algebraic expression represents GK? b. If GK = 24. what are GH and JK? G H J K a What algebraic expression represents GK? GK (Simplify your answer Do not factor)
Answer:
Step-by-step explanation:
The question lacks appropriate diagram. Find the diagram attached below;
From the diagram GK = GH+HJ+JK
Given GH = GJ-HJ
GH = 2x+2-x
GH = x+2
HJ = x
JK = HK - HJ
JK = 6x-1-x
JK = 5x-1
GK = x+2+x+5x-1
collect like terms
GK = x+x+5x+2-1
GK = 7x+1
Given GK = 24, then;
7x+1 = 24
7x = 24-1
7x= 23
x = 23/7
Since GH = x+2
GH = 23/7 + 2
GH 23+14/7
GH = 37/7
Also JK = 5x-1
JK = 5(23/7)-1
JK = 115/7 - 1
JK = 115-7/7
JK = 108/7
Is 9.45 bigger than 0.945
Step-by-step explanation:
Yes it is
20 Characters needed but thank me later. Wouldnt mind if you marked me as brainliest
model the following expression: - 8 + 5.
Answer:
-8+5 =-3that is answer
Answer:
-8 + 5 = -3
Step-by-step explanation:
(Image)
Continue each pattern with the next two numbers.
2.11,13,16,20,25,31,38?
Answer:
the next two numbers would be: 46 and 55
Step-by-step explanation:
the pattern is adding. you added 2 to 11, 3 to 13, 4 to 16, 5 to 20, 6 to 25, and 7 to 31.
so you just add 8 to 38, and add 9 to whatever you got when you added 8 to 38, which was 46
When a number is doubled and then added to 24,the result is 49
Answer:
12.5 has to be the number that was doubled.
Step-by-step explanation:
24+2x=49 is your equation
you subtract 24 from 49 you get 25
25 divided by 2 is 12.5 there for 12.5+12.5 is 25
25+24=49
Hope this helps!
Given: B = 7 −3 5 −1 C = 1 −1 13 −5 Solve the equation: 2X + B = C X =
Answer:
Actually, this is referring to matrix equations, so it's -3 1 4 2-
Step-by-step explanation:
Hey, so I got this from the comments and wanted it to be a real answer, so please give them lot's of thanks if you can. They are keatonmorehouse0727.
Lines CE and AD intersect at point B. 37° What is the measure of angle DBE? 370 530 O 1270 0 1430
Answer:
idk how to answer
Step-by-step explanation:
i need more info
Answer:
127 degrees
Step-by-step explanation:
it obtuse
You want to paint a piece of pottery at an art studio. the total cost is the cost of the piece plus an hourly studio fee.the price for the studio A is shown at the right you spend a total of $46 on the project how many hours did you spend at the studio?
A) define the variable: x=
B) write an equation
C) answer the question include the units
Answer:
5 and 3/5
Step-by-step explanation:
sorry if it is wrong
What correct equation to find the length of DF in the following diagram
Answer:
Where is the diagram... I don't see it
name the part of the circle and explain your answer. (not radius)
If y = 2x and 3x – 3y = 2, then x = what ?
An equation is formed when two equal expressions are equated together with the help of an equal sign '='. The value of x in the two of the given equations is 2/–3.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Given that y = 2x and 3x – 3y = 2, therefore, if we substitute the value of y from y=2x into the second equation 3x-3y=2, then,
3x – 3y = 2
3x – 3(2x) = 2
3x – 6x = 2
–3x = 2
x = 2/–3
Hence, the value of x in the two of the given equations is 2/–3.
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please explain the steps in order to solve the equation 2x+5y=28 when x=4
Answer:
Step-by-step explanation:
Plug in 4 for x
2(4) + 5y = 28
8 + 5y = 28 (subtract both sides by 8)
5y = 20 (divide both sides by 5)
y = 4
(4 root 6 - 2root7) (4root6 +2root7)
Ms. Smith has 28 sixth graders and 35 seventh graders for Math. If she wants to break the two grades into identical groups without any students left over, how many students will be in each group? *
Answer:
58
Step-by-step explanation:
A diver is 19 meters below the surface of the water. Use an integer to represent how far the diver will need to travel to reach the surface.
Since the diver is 19 metres below the surface of the water, then he will need to travel 19 metres to reach the surface.
which graph represents the solution to the inequality y<1/2x-4
The graph shown in option (B) represents the solution to the inequality y<1/2x-4
InequalityA relation between two mathematical expressions which are not equal is known as inequality.
Graphing inequalitiesFirst, solve the given inequality so that y is on the left side and everything else is on the right side.Then, plot the graph for the equation.Finally, we will shade above the line for the ">" and below the line for the "<".Which graph represents y < 1/2x-4?The inequality symbol is "<" (less than).
So, the line of the graph should be dashed and shaded below the line.
Comparing the graphs given in the question, we can conclude that option (B) is correct.
Hence, the graph in option (B) represents the solution to inequality y<1/2x-4.
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Answer:
B aka y<1/2x-4
Step-by-step explanation:
I did this before
If miley has 200 pencils and Katie has 300 more pencils then how many more does Katie have then miley
Answer: 300
Step-by-step explanation: 300+200=500
then 500-200=300
Answer:
answer is 300
Step-by-step explanation:
it explains that she has 300 more
Janelle is using a piece of cardstock to create an open box with no top. The cardstock is 8 inches by 11 inches. She cuts a square with length out of each corner and folds up the sides to create the box. Find the volume of the box, , in standard form.
Answer: 4x^3-38x^2+88x
Step-by-step explanation:
The volume of the box in standard form is 4x³ - 38x² + 88x
Since Janelle cuts a square of side length x out of each corner of the cardstock, we have a length x + x = 2x cut out of each dimension of the cardstock.
Since the dimensions of the cardstock are 8 inches by 11 inches, cutting out a length of 2x inches from each dimension to produce the length, L and width, w of the open box, we have the length of the open box, L = 8 -2x and the width of the open box, W = 11 - 2x.
Since the height of the open box is the length x of the square cut out of each corner, and the open box is a rectangular box,
So, the volume of the box is
V = LWx
Substituting the values of the variables into the equation, we have
V = LWx
V = (8 - 2x)(11 - 2x)x
Expanding the brackets, we have
V = (88 - 16x - 22x + 4x²)x
V = (88 - 38x + 4x²)x
V = 88x - 38x² + 4x³
Re-arranging, we have
V = 4x³ - 38x² + 88x
So, the volume of the box in standard form is 4x³ - 38x² + 88x
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