What is the equation of a circle with radius 2 and center (3, 1)? (x - 3)2 – (y - 1)2 = 4 O (c - 3)2 + (y - 1)2 = 4 (x ) O (x + 3)2 + (y + 1)2 = 4 (x - 3)² + (y - 1)2 = 2
Answers
Given the radius of a circle as r = 2 and centre = (3,1)
We want to find the equation
Solution
First, the equation of a circle centre (a,b) and radius r is given by
[tex](x-a)^2+(y-b)^2=r^2[/tex]From the question
[tex]\begin{gathered} a=3 \\ b=1 \\ r=2 \end{gathered}[/tex]We put the parameters into the equation ans simplify
[tex]\begin{gathered} (x-a)^2+(y-b)^2=r^2 \\ (x-3)^2+(y-1)^2=2^2 \\ (x-3)^2+(y-1)^2=4 \end{gathered}[/tex]Therefore the correct option is Option B
Related Questions
0,2% of what number is 8?
Answers
LE THE UNKNOWN NUMBER BE x WHEN I SOLVE
[tex] \frac{0.2}{100} \times x = 8 \\ \frac{0.2x}{100} = 8 \\ [/tex]
I WILL USE CROSS MULTIPLICATION
[tex]0.2x = 8(100) \\ 0.2x = 800 \\ \frac{0.2x}{0.2} = \frac{800}{0.2} \\ x = 4000[/tex]
OF ( 4000) IS 0.2% OF 8.
HOPE THIS HELPS.
Complete the point slope equation of the line through -2,6 and 1,1
Answers
Answer:
3y = -5x + 8
Step-by-step explanation:
Point Slope Equation Of A Straight Line:
y - y1 = m(x - x1)
where m = slope of the line and (x1, y1) is any point on the line
Slope is given by rise/run
For any two point (x1, y1) and (x2, y2) on the line
rise = y2 - y1
and
run = x2 - x1
Given points (-2, 6) and (1, 1)
rise = 1 - 6 = -5
run = 1 - (-2) = 1 + 2 = 3
rise/run = m = -5/3
Equation using the point (1, 1) is
y - 1 = -5/3(x - 1)
y - 1 = -5/3x + 5/3
Multiply both sides by 3 to get
3(y - 1) = 3 x (-5/3)x + 3(5/3)
3y - 3 = -5x + 5
3y = -5x + 8
Hey there Ms or Mr could you please help me out with this problem? Just a heads up, this is my assignment not a quiz. My assignment is about distance and midpoint formula.
Answers
EXPLANATION
Let's see the facts:
Midpoint = (-2,5)
A=(4,7)
Let the point of B as B=(x,y)
Then,
[tex]\frac{x+4}{2}=-2,\frac{y+7}{2}=5[/tex]Multiplying the frist equation by 2:
[tex]x+4=-2\cdot2[/tex]Subtracting -4 to both sides:
[tex]x=-4-4[/tex]Simplifying:
[tex]x=-8[/tex]Multiplying the second equation by 2:
[tex]y+7=2\cdot5[/tex]Subtracting -7 to both sides:
[tex]y=10-7=\text{ 3}[/tex]The coordinates of the point B are:
B=(-8,3)
cual es la raiz cuadrada de 4096 y 529
Answers
The square root of 4096 is 64 and the square root of 529 is 23.
The square root of a number x in mathematics is a number y whose square (the outcome of multiplying the number by itself, or y·y), is equal to x.
For instance, since 4² = (-4)² = 16, 4 and -4 are the square roots of 16.The square root of x is rational if and only if x is a rational integer that can be expressed as the ratio of two perfect squares. (The square root of 2 for proof that this number is illogical; the quadratic irrational for evidence against all non-square natural numbers.) The square root function changes rational numbers into algebraic numbers, which are a superset of rational numbers.The given numbers are 4096 and 529.
Let us find the factors of 4096:
4096 = 2¹²
Therefore the square root of 4096 = √4096 = √(2¹²) = 2⁶ = 64 .
Let us find the factors of 529:
4096 = 23 × 23
Therefore the square root of 529 = √529 = √(23²) = 23 .
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Disclaimer : The question in English is :
What is the square root of 4096 and 529.?
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I need an answer for 1,2,3,4,5, and 6
Answers
Using alternate exterior angles,
[tex]3x-31=x+59\\\\2x=90\\\\x=45\\\\\implies 3x-31=x+59=104[/tex]
So,
[tex]\angle 1[/tex]: 76 degrees using linear pairs
[tex]\angle 2[/tex]: 104 degrees using corresponding angles
[tex]\angle 3[/tex]: 76 degrees using vertical angles
[tex]\angle 4[/tex]: 104 degrees using same-side interior angles
[tex]\angle 5[/tex]: 76 degrees using linear pairs
[tex]\angle 6[/tex]: 76 degrees using vertical angles
the numberof blocks has 9 in the ones places.The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11. How many blocks are there?
Answers
Based on the given information, we can express the following
[tex]\begin{gathered} h=1+t \\ h+t=11 \end{gathered}[/tex]Because the digit of hundreds is 1 more the tens, and they sum 11. Let's combine the function to find t
[tex]\begin{gathered} h+t=11 \\ 1+t+t=11 \\ 2t=11-1 \\ t=\frac{10}{2}=5 \end{gathered}[/tex]So, the digit of tens is 5.
Let's find the hundreds.
[tex]h=1+t=1+5=6[/tex]The number of hundreds is 6.
Hence, the number of blocks is 659.Simplify 3^2 + 3(6 - 2^2) ÷ 6.
Answers
Fractions simplification
Apply PEMDAS method. Eliminate parenthesis first.
Then (3^2 + 3•6 - 3•2^2 )/ 6 = (3^2 + 3•6 - 3•2^2 )/ 6
now eliminate exponents
= [3• 3 + 3•6 + 3•4] / 6
= 3•5/6 now multiplicate
3•5= 15
Then
= 15/6 = 2 + 3/6 = 2 + 1/2 = 2.5
five friends are going to share 1/2 of a pizza. How much of a whole pizza will each friend eat?which equation can be used to solve the problem above?A.5÷1/2=nB.1\2÷5=nC.n÷5=1/2D.n÷1\2=5
Answers
In this case the answer is very simple .
Step 01:
Data
5 friends
1/2 pizza
Step 02:
We must distribute the pizza among 5 friends.
[tex]\frac{\frac{1}{2\text{ }}\text{ pizza}}{5\text{ friends}}\text{ = n}[/tex]The answer is:
Option B.
1\2÷5=n
What is the diameter of a sphere with a volume of 80487 in^3, to the nearest tenth ofan inch?
Answers
EXPLANATION
If the volume of a sphere is 80487 in^3, the diameter would be given by the following relationship:
[tex]\text{Volume}=\frac{4}{3}\cdot\pi\cdot r^3[/tex]Replacing terms:
[tex]80487=\frac{4}{3}\cdot\pi\cdot r^3[/tex]Isolating r^3:
[tex]\frac{80487}{\pi}\cdot\frac{3}{4}=r^3[/tex]Applying the cubic root to both sides:
[tex]\sqrt[]{\frac{80487}{\pi}\cdot\frac{3}{4}}=r[/tex]Switching sides:
[tex]r=\sqrt[]{\frac{80487}{\pi}\cdot\frac{3}{4}}[/tex]Multiplying numbers:
[tex]undefined[/tex]Write an equation for the function whose graph is shown to the right
Answers
In this problem we have that
the parent function or original function is
[tex]y=\sqrt[]{x}[/tex]the transformation is a translation of 2 units at left
so
the rule is
(x,y) ------> (x-2,y)
therefore
the equation of the given graph is
[tex]y=\sqrt[]{x+2}[/tex]What are the x intercept of the equation f(x)=3(x-7)(4x+2)
Answers
The x-intercepts are
x = 7
and
x = -1/2
SOLUTION:
we need to find the value of x where y or f(x) is 0
the expression x-7 will be zero if x=7
the expression 4x+2 will be zero if x = -1/2
Which are the better statistics to use to compare the team scores
Answers
Step 1
We are given two team scores
Required; Which are the better statistics to use to compare the team scores
Step 2
The box plot displays the 5 number summary
-Minimum data value
-Maximum data value
-Median
-First Quartile, and
Third Quartile
The Interquartile Range (IQR) of the data can also be calculated by finding the difference between the First Quartile, and the third Quartile.
The Interquartile Range (IQR) helps us to determine the variability of the data set. The IQR is often seen as a better measure of spread than the range as it is not affected by outliers.
The median that is gotten from the box pot measures the center tendency of the data. The median is the most informative measure of central tendency for skewed distributions or distributions with outliers.
Therefore, the better statistics to use for comparing the scores of the teams are;
Median and IQR.
The bill at a restaurant came to $136.40. The patrons decided to leave a 15% tip. What was the total bill including tip?
Answers
Answer: 156.86
Step-by-step explanation:
Helppppppp will give brainiest to first right answer
Answers
Answer:
1 degrees F
Step-by-step explanation:
-3+12-6=3
3/3 = 1
1 degrees F
:]
You would do -3+12-6 ( which is 3) and divide that by 3 (the number of numbers) to get the average (1). Now you know that 1 degree is your answer.
A university claims its recent graduates earn an average annual salary of
$45,000. You draw a random sample of 40 recent graduates and find that their
average salary is $46,000, and calculate the standard error of the sample mean
as 436.81. What is the t ratio for this result?
Answers
Answer:
t-ratio = 0.362
Step-by-step explanation:
In hypothesis testing,
The t-ratio is given by the formula:
[tex]\dfrac{X-\mu}{s}[/tex]
where μ is the hypothesized mean, X the sample mean and s the sample standard deviation
The Standard Error of the Mean SEM = [tex]\large \text{{$\dfrac{s}{\sqrt{n}}$}}[/tex] where n is the sample size.
We We are given:
X = 46,000
μ= 45,000
SEM = 436.81
n = 40
We can find the sample standard deviation
s = SEM x √n
s = 436.81 x √ 40
s = 2762.3
Therefore
t-ratio = (46000 - 45000)/2762.3 = 0.362
Which is a counterexample for the conditional statement shown?
If the numerator of a fraction is larger than the denominator of the fraction, then the fraction is greater than 1.
any fraction with a denominator of 0
any fraction with a numerator of 0
any fraction with a positive numerator and a negative denominator
any fraction with a negative numerator and a positive denominator
Answers
Answer: Choice C
any fraction with a positive numerator and a negative denominator
======================================================
Explanation:
Consider the fraction 10/(-5) where we divide 10 over -5
The numerator 10 is larger than the denominator -5, as any positive number is larger than a negative number. But 10/(-5) simplifies to -2 which is not greater than 1.
This is one counterexample to show that the original conditional statement is false.
what is probability that it is from the 70s is
Answers
Given :
the total number of collections = 60 vinyl
There are six from the 70s
So, the probability that is from 70s is :
[tex]\frac{6}{60}=\frac{1}{10}[/tex]Given the following: P(A)=0.28, P(B)=0.64, P(B|A)= 0.37, calculate P(A and B)
Answers
By definition of conditional probability you know that
[tex]P(B|A)=\frac{P(A\cap B)}{P(A)}[/tex]Now, replace the values that you have and solve for P(A and B)
[tex]\begin{gathered} P(B|A)=\frac{P(A\cap B)}{P(A)} \\ 0.37=\frac{P(A\cap B)}{0.28} \\ \text{ Multiply by 0.28 on both sides of the equation} \\ 0.37\cdot0.28=\frac{P(A\cap B)}{0.28}\cdot0.28 \\ \text{ Therefore,} \\ 0.1036=P(A\cap B) \end{gathered}[/tex]Please help I couldn’t go to school today and I don’t understand
Answers
Answer:
the value of x is 2
Step-by-step explanation:
3x + 6
x = 6 ÷ 3
x = 2
3x + 6
3× 2 + 6
6+6
12
-4 + 8x
-4 + 8×2
-4+16
12
y + 7 ≥ –1 and y∕4 + 3 ≤ 5.
Answers
Answer:
first one
y can be every number so it can be a -6 to infinity
[tex] - 1 < y [/tex]
[tex]y = - 6 \: or \: \infty [/tex]
second two
y<8
[tex]y < 8 \: or \infty [/tex]
the supplement of an angle is 30 degrees more than the measure of the
what is the measure of
the angle?
angle,
Answers
Answer:
x = 75°
Step-by-step explanation:
supplementary angles sum to 180°
let x be the angle then x + 30 is the supplementary angle , so
x + x + 30 = 180
2x + 30 = 180 ( subtract 30 from both sides )
2x = 150 ( divide both sides by 2 )
x = 75
x + 30 = 75 + 30 = 105
the angle is 75° and the supplementary angle is 105°
A board 172 inches wide is cut to three-fourths of its original width
Answers
Answer: 129 inches
Step-by-step explanation:
172 inches x 3/4 original with = 129 inches
A family has 6 children. Assume that each child is as likely to be a boy as it is to be a girl. Find the probability that the family has 6 girls if it is known the family has at least one girl.
Answers
The probability that the family has 6 girls if it is known the family has at least one girl is; 3.125%
What is the Probability?
We are told that each child has the same chance of being a boy or a girl and as such we can say that probability is 1 in 2, or 0.50 or 50%.
Since the family must have at least one girl, if we assume that the first child is a girl, the the probability of the second child being a girl is 50%.
The probability of the other 5 children all being girls is:
(1/2) * (1/2) * (1/2) *(1/2) * (1/2) = 1/32.
This Probability expressed as a decimal or percentage represents a probability that we have as; 1/32 = 0.03125 = 3.125%.
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How would you find the area of each of your rooms without furniture?
Answers
Given that you have a room that has dimensions l and w wherein l is the length of the room while w is the width of the room (shown in a diagram below).
the area of the room can be computed using the equation
[tex]A_{room}=l\times w[/tex]Basically, we just multiply the length and the width of the room.
There are 151 people in the 6th
grade class. It costs $24 for each
person to go snorkeling. How
much did they pay altogether?
Answers
Answer:
Step-by-step explanation:
it cost $3,624
Give a parametric representation of the parabola y = (x+7)^2 -5
Answers
We have to find the parametric representation of the parabola y = (x+7)² - 5, which is represented in vertex form.
Parametric representations use a third variable on which we define x and y.
We will call this variable t.
We can start with defining t as:
[tex]\begin{gathered} t=x+7 \\ \Rightarrow x(t)=t-7 \end{gathered}[/tex]We then have already x in function of t.
Then, we can use the definition of t to find y(t):
[tex]\begin{gathered} y(t)=(x(t)+7)^2-5 \\ y(t)=(t-7+7)^2-5 \\ y(t)=t^2-5 \end{gathered}[/tex]We then have x and y defined in function of t.
Answer: we can represent the parabola in a parametric form as
x(t) = t-7
y(t) = t² - 5
b. Triangle DEF with coordinates D(-2, 2), E (1,5), and F (4, -1) is rotated 90° counterclockwise aboutthe origin
Answers
2x – 1 over 5 - 3x +2 over 4
Answers
we have
(2x-1)/5-(3x+2)/4
{4(2x-1)-5(3x+2)}/20
{8x-4-15x-10}/20
{-7x-14}
5-(3x+2)/4
4(2x-1
The combination of both integer and rational numbers gives
Answers
Answer:
Step-by-step explanation: Answer is real number
if a varies equal directly with b, and a=8 when b=20 what is the value of a when b= 14.5