The center of the sphere is (-2, 1, 0).
The radius of the sphere is √65.
The given equation is x² + y² + 2 + 4x - 2y - 62 = 0.
We can rewrite the given equation as follows:
x² + 4x + y² - 2y = 60
Completing the square of x and y, we get:
(x + 2)² - 4 + (y - 1)² - 1 = 60
(x + 2)² + (y - 1)² = 65
Now, we know that the general equation of the sphere is :
(x - a)² + (y - b)² + (z - c)² = r² where (a, b, c) is the center of the sphere, and r is the radius.
To compare the given equation with the equation of the sphere, we will have to convert it into the standard form as follows:
(x + 2)² + (y - 1)² + (0 - 0)² = √65²
The center of the sphere is (-2, 1, 0), and its radius is √65.
To learn more about sphere visit : https://brainly.com/question/10171109
#SPJ11
Write the expression The product of seven and a number, increased by 5
Answer:
(7×X)+5
Step-by-step explanation:
Answer:
(7×x) +5
Step-by-step explanation:
product of 7 and a number means 7x. increase by 5 means + 5
A man invested $10,500 for 7 years at 5 ½ % per annum simple interest.
(A) Determine the simple interest payed
(B) Calculate the amount of money he collected after the period of 7 years
Money invested by a man = $10,500
No.of years for which he invested his money = 7
Rate of interest = 5.5%
We know that :
\( \tt \: Simple \: interest = \frac{Principal × Rate × Time}{100} \)
Principal = 10500
Rate = 5.5%
Time = 7 years
Simple interest the man payed :
\( = \tt\frac{10500 \times 55 \times 7}{10 \times 100} \)
\( = \tt \frac{4042500}{1000} \)
\( \color{plum}=\tt 4042.50\)
Therefore, the simple interest payed by the man = $4042.50
Solution (B) :Money invested by the man (principal) = $10,500
The simple interest he payed = $4042.50
We know that :
\(\tt \: amount = principal + interest\)
The amount the man collected after a period of 7 years :
\( = \tt10500 + 4042.50\)
\( =\tt 14520.50\)
Thus, amount = $14520.50
Therefore the amount he collected after a period of 7 years = $14520.50
Help noW ASAP PLEASE AND THANK YOUUU
Answer:
8x+13
Step-by-step explanation:
It goes through all, trust me. Put the equation and the point in desmos, a graphing calculator
What are the 4 tests for similar triangles?
The 4 tests for similar triangles are:-
AAA: Three pairs of equal angles.
SSS: Three pairs of sides in the same ratio.
SAS: Two pairs of sides in the same ratio and an equal included angle.
ASA: Two angles and the side included between the angles of one triangle are equal
What is AAA,SAS,ASA,SSS?
According to the SSS rule, two triangles are said to be congruent if all three sides of one triangle are equal to the corresponding three sides of the second triangle.
According to the SAS rule, two triangles are said to be congruent if any two sides and any angle between the sides of one triangle are equal to the corresponding two sides and angle between the sides of the second triangle.
According to the ASA rule, two triangles are said to be congruent if any two angles and the side included between the angles of one triangle are equal to the corresponding two angles and side included between the angles of the second triangle.
According to the AAA rule, "if in two triangles, corresponding angles are equal, then their corresponding sides are in the same ratio (or proportion), and hence the two triangles are identical."
Learn more about SAS ,ASA ,AAS, SSS from the link below
https://brainly.com/question/29617415
#SPJ4
Students in the sophomore class were asked whether they preferred vanilla or chocolate
Ice Cream
Frequency
Vanilla
50
Chocolate
30
6. What is the relative frequency of sophomores chose chocolate?
7. What is a probability distribution for this data?:
A storage bin has the shape of a cylinder with a conical top. What is the volume of the storage bin if its radius is
r
=
5. 8
ft, the height of the cylindrical portion is
h
=
7. 9
ft, and the overall height is
H
=
16. 7
ft?
Total volume = (V_cylinder)+(V_cone)
= 827.64 + 305 .45
=1133.09 ft³
To calculate the volume of the storage bin with a cylindrical portion and a conical top, we need to find the volume of each part and add them together.
Given:
Radius (r) = 5.8 ft
Height of cylindrical portion (h) = 7.9 ft
Overall height (H) = 16.7 ft
First, find the height of the conical top by subtracting the height of the cylindrical portion from the overall height:
Height of conical top (h_cone) = H - h = 16.7 - 7.9 = 8.8 ft
Now, calculate the volume of each part:
1. Volume of cylindrical portion (V_cylinder) = π*r²h = π(5.8²)(7.9) ≈ 827.64 ft³
2. Volume of conical top. (V_cone) = (1/3)π*r²h. (V_cone) = (1/3)π(5.8²)(8.8) ≈ 305.45 ft³
Finally, add the volumes of both parts to find the total volume of the storage bin:
Total volume = V_cylinder + V_cone = 827.64 + 305.45 ≈ 1133.09 ft³
Learn more about volume here:
https://brainly.com/question/272702020
#SPJ11
what is pythagorus theorum?
Answer:
when the square on the hypotenuse of a right-angled triangle is equal in to the sum of the squares on the other two sides
Step-by-step explanation:
let's say......
h = ?
o = 4
a = 4
a^2+o^2=32
square root 32
5.65685424949
that is the value for h
Answer:
A^2+B^2=C^2
you use it the find any length of a right angled triangle
the sample proportion is always included in the confidence interval for population proportions. is this surprising?
It is not surprising that the sample proportion is always included in the confidence interval, as the sample proportion is considered as the estimate of the confidence interval.
Given a confidence interval what are the point estimate of the population mean and the margin of error?A confidence interval has two bounds, a lower bound and an upper bound.
A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.
The margin of error is the difference between the two bounds, divided by 2.
The point estimate is the sample proportion for a confidence interval of proportions, hence it is not surprising that the sample proportion is always included in the confidence interval for population proportions.
More can be learned about confidence intervals at https://brainly.com/question/15712887
#SPJ1
is the following a probability model? what do we call the outcome "red"?
The following a probability model? what do we call the outcome No, the provided information is not sufficient to determine if it is a probability model. The outcome "red" is typically referred to as an event.
A probability model is a mathematical representation of a random experiment, where the sample space is defined, and probabilities are assigned to all possible outcomes. To determine if the given information is a probability model, we would need to know the complete list of possible outcomes, their corresponding probabilities, and ensure that the probabilities meet the necessary conditions (sum up to 1 and are non-negative).
Based on the limited information provided, we cannot determine if it is a probability model. The outcome "red" is called an event in the context of probability.
To know more about probability, visit:
https://brainly.com/question/30034780
#SPJ11
FIND THE MISSING SIDE. ROUND TO THE NEAREST TENTH
Answer:
B, 16.1
Step-by-step explanation:
cos 36 = 13/x
cos 36 × x = 13
x = 13/cos 36
(Use Calculator)
x = 16.068883...
x ≈ 16.1
HELP ME PLEASEEEEEEEEE
Answer:
3c - 5 is equivalent
Step-by-step explanation:
For the notes section
Step 1 group like terms
-c - 10 + 4c + 5 = -c + 4c - 10 + 5
Step 2 add similar elements
= 3c - 10 + 5
Step 3 add/subtract the numbers
= 3c - 5
I need help with this right now
The equations are x² = y + 16 & 4y - 1 = 7x and the solution is (5, 9)
Selecting the numbers and the solutionsFrom the question, we have the following parameters that can be used in our computation:
x = first number
y = second number
Given that
The square of the first number is 16 more than the second number
This means that
x² = y + 16
Also, we have the difference expression to be
4y - 1 = 7x
When these equations are solved graphicaly, we have
(x, y) = (5, 9)
Hence, the equations are x² = y + 16 & 4y - 1 = 7x and the solution is (5, 9)
Read more about system of equations at
https://brainly.com/question/13729904
#SPJ1
Margaret works at a clothing store. Today she has sold only shirt and pants.The ratio of the number of shirts sold to the number of the items sold to 2/5. Which model shows this to ratio
Answer:
Shirt : Pant = 2 : 3 , & Pant : Shirt = 3 : 2 , Linear model can be used.
Step-by-step explanation:
Ratio of ' Number of shirts sold : Number of items sold' = 2 : 5
Let the common ratio be = x
Then, number of shirts sold = 2x. And, number of total items sold = 5x.
So, number of pants sold = Number of items sold - number of shirts sold = 5x - 2x = 3x
So, shirt to pant ratio = 2x / 3x = 2 : 3 .And, pant to shirt ratio = 3 : 2
This model can be shown in linear equation, as all are linear powered.
How many possible of size n=3 can be drawn in succession with replacement
from the population of size 2 with replacement?
There are 8 possible samples of size 3 that can be drawn in succession with replacement from a population of size 2.
The population size is 2, and we want to draw a sample of size 3 with replacement. With replacement means that after each draw, the item is placed back into the population, so it can be drawn again in the next draw.
To calculate the number of possible samples, we need to consider the number of choices for each draw. Since we are drawing with replacement, we have 2 choices for each draw, which are the items in the population.
To find the total number of possible samples, we need to multiply the number of choices for each draw by itself for the number of draws. In this case, we have 2 choices for each of the 3 draws, so we calculate it as follows:
2 choices x 2 choices x 2 choices = 8 possible samples
Therefore, there are 8 possible samples of size 3 that can be drawn in succession with replacement from a population of size 2.
To know more about samples, visit:
https://brainly.com/question/32907665
#SPJ11
Blake and two friends equally shared the cups of water shown in the picture.
What fraction of the cups of water did each of them drink?
A
3
6
B
5
6
C
2
6
D
4
6
HELP!! DISCRETE DATA
Answer:
Hey there!
Discrete Data is the number of friends you invited to your last birthday party.
Hope this helps :)
Answer:
a) The number of friends you invited to your last party.
Step-by-step explanation:
Let’s take a step back what is discrete, and what continuous?
Discrete
This is the type of data with certain whole numbers not 2.36 only 2 or 3.
Continuous
This is the data being specific like 1.373.
So a)
The is discrete because you can only have like 5 friends not 7.49 friends.
b)
This is continuous because height can be 5.26 feet.
c)
Time is continuous because there can be 4.3739 minutes.
d)
Weight is also continuous it can be 6339.373 pounds.
A basketball player has a 0.603 probability of making a free throw. if the player shoots 10 free throws, what is the probability that she makes exactly 6 of them?
The probability that she makes 6 of them is 0.242
The probability is the likelihood that something will happen, to put it simply. When we don't know how something will turn out, we can talk about the possibility of one outcome or the likelihood of several. The study of events that fit into a probability distribution is known as statistics.
Given,
A basketball player has a probability = 0. 603
The player shoots 10 free throws.
Let x be a random variable that represents the number of free throws made by a basketball player.
x ≈ Binomial (n,p)
p = 0.603
n= 10
P(x=k) = n\(C_{k} p^{k} (1-p)^{n-k}\)
P(6) = ₁₀\(C_{6} (0.603)^{6} (1-0.603)^{10-6}\)
= \(210(0.048)(0.397)^{4}\)
= 210 ( 0.048 ) ( 0.024)
= 0.242
Therefore, the probability that she makes 6 of them is 0.242
Learn more about probability here: https://brainly.com/question/28046280
#SPJ4
If f(3) = 10, f ' is continuous, and 4 f '(x) dx 3 = 18, what is the value of f(4)?
The value of f(4) is 28.
it can be found using the fundamental theorem of calculus.
The fundamental theorem of calculus states that if a function f is continuous on an interval and its derivative f' exists on that interval, then the definite integral of f' over the interval is equal to the difference in the values of the original function at the endpoints of the interval.
In this case, we are given that f '(x) is continuous, and that the definite integral of f '(x) over the interval [3, 4] is equal to 18. Therefore, using the fundamental theorem of calculus, we have that f(4) - f(3) = 18, and since f(3) = 10, we can solve for f(4) to get f(4) = 10 + 18 = 28.
To know more about fundamental theorem of calculus click on below link:
https://brainly.com/question/2293034#
#SPJ11
Complete question:
If f(3) = 10, f ' is continuous, and \(\int\limits^4_3\) f '(x) dx = 18, what is the value of f(4)?
Help , I don’t know how to solve this
Answers in bold:
S9 = 2
i = 20
R = -2
=====================================================
Explanation:
\(S_0 = 20\) is the initial term because your teacher mentioned \(A_0 = I\) as the initial term.
Then R = -2 is the common difference because we subtract 2 from each term to get the next term. In other words, we add -2 to each term to get the next term.
Here is the scratch work for computing terms S1 through S4.
\(\begin{array}{|l|l|}\cline{1-2}S_{n} = S_{n-1} - 2 & S_{n} = S_{n-1} - 2\\S_{1} = S_{1-1} - 2 & S_{2} = S_{2-1} - 2\\S_{1} = S_{0} - 2 & S_{2} = S_{1} - 2\\S_{1} = 20 - 2 & S_{2} = 18 - 2\\S_{1} = 18 & S_{2} = 16\\\cline{1-2}S_{n} = S_{n-1} - 2 & S_{n} = S_{n-1} - 2\\S_{3} = S_{3-1} - 2 & S_{4} = S_{4-1} - 2\\S_{3} = S_{2} - 2 & S_{4} = S_{3} - 2\\S_{3} = 16 - 2 & S_{4} = 14 - 2\\S_{3} = 14 & S_{4} = 12\\\cline{1-2}\end{array}\)
Then here is S5 though S8
\(\begin{array}{|l|l|}\cline{1-2}S_{n} = S_{n-1} - 2 & S_{n} = S_{n-1} - 2\\S_{5} = S_{5-1} - 2 & S_{6} = S_{6-1} - 2\\S_{5} = S_{4} - 2 & S_{6} = S_{5} - 2\\S_{5} = 12 - 2 & S_{6} = 10 - 2\\S_{5} = 10 & S_{6} = 8\\\cline{1-2}S_{n} = S_{n-1} - 2 & S_{n} = S_{n-1} - 2\\S_{7} = S_{7-1} - 2 & S_{8} = S_{8-1} - 2\\S_{7} = S_{6} - 2 & S_{8} = S_{7} - 2\\S_{7} = 8 - 2 & S_{8} = 6 - 2\\S_{7} = 6 & S_{8} = 4\\\cline{1-2}\end{array}\)
And finally we arrive at S9.
\(S_{n} = S_{n-1} - 2\\\\S_{9} = S_{9-1} - 2\\\\S_{9} = S_{8} - 2\\\\S_{9} = 4 - 2\\\\S_{9} = 2\\\\\)
--------------------
Because we have an arithmetic sequence, there is a shortcut.
\(a_n\) represents the nth term
S9 refers to the 10th term because we started at index 0. So we plug n = 10 into the arithmetic sequence formula below.
\(a_n = a_1 + d(n-1)\\\\a_n = 20 + (-2)(n-1)\\\\a_n = 20 - 2(n-1)\\\\a_{10} = 20 - 2(10-1)\\\\a_{10} = 20 - 2(9)\\\\a_{10} = 20 - 18\\\\a_{10} = 2\\\\\)
In other words, we start with 20 and subtract off 9 copies of 2 to arrive at 20-2*9 = 20-18 = 2, which helps see a faster way why \(S_9 = 2\)
Graph the line that represents the equation
y+2=1/2 (x+2)
Answer: your answer is correct because if you put that equation into y=mx+b form you get y=1/2x-1
so you start at -1 and go over 2 and up 1 and you woulld land on 2
so you would graph at (2,-1) i think
you toss 3 distinguishable dice with 6 sides each, numbered from 1 to 6 and sumn them. how much more likely is it to get a sum of 17 than a sum of 18\
Bytaking the quotient between the probabilities we can see that Getting a 17 is three times more likely to get a 18.
How much more likely is it to get a sum of 17 than a sum of 18?If you toss 3 dices with 6 sides each, then the total number of combinations is:
6*6*6 = 216
Now, the outcomes that add up to 18 are:
dice 1, dice 2, dice 3, sum:
6 6 6 , 18
The outcomes that add up to 17 are:
dice 1, dice 2, dice 3, sum:
5 6 6 , 17
6 5 6 , 17
6 6 5 , 17
So the probabilities are:
P(18) = 1/216
P(17) = 3/16
The quotient gives:
P(17)/P(18) = 3
Getting a 17 is 3 times more likely to get a 18.
Learn more about probability at:
https://brainly.com/question/25870256
#SPJ1
Help me please I need answers
Answer:
The solution of the system of equations are;
(-2, -6) and (4, 6)
Step-by-step explanation:
-2·x + y = -2...............(1)
\(y = -\dfrac{1}{2} \cdot x^2 + 3 \cdot x + 2\)........(2)
Equation (1) gives;
y = 2·x - 2
From which we have;
\(2 \cdot x - 2 = -\dfrac{1}{2} \cdot x^2 + 3 \cdot x + 2\)
\(0= -\dfrac{1}{2} \cdot x^2 + x + 4\)
x² -2·x -8 = 0
(x - 4)·(x + 2) = 0
x = 4 or x = -2
The y-coordinate values are;
y = 2×(-2) - 2 = -6 and y = 2×(4) - 2 = 6
The solution points are;
(-2, -6) and (4, 6).
The points where the equation, -2·x + y = -2 and the equation \(y = -\dfrac{1}{2} \cdot x^2 + 3 \cdot x + 2\) intersect are (-2, -6) and (4, 6).
3) In a box of cookies, % are chocolate chip, 10% are peanut butter, .1 of the cookies are M&M. The rest of the
cookies are snicker doodle. What percent of the cookies are snicker doodle?
Solve 8x – 5 = 23 + 4x.
Answer: X equals 7
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
First you want to simplify the equation
8x + (-5) = 23 + 4x
-5 + 8x = 23 + 4x
Then solve for x, but before we do that we !!!must!!! move all terms that have x to the left. Everything else would go to the right.
So we add -4x to both sides ..
-5+ 8x + (-4x) = 23 + 4x + (-4x)
-5 + 4x = 23 + 4x + (-4x)
-5 + 4x = 23 +0
-5 + 4x = 23
Then add 5 to both sides of the equation:
-5 + 5 + 4x = 23 + 5
0 + 4x = 23 + 5
4x = 23 + 5
4x = 28
Then divide each side by 4:
x = 7
And there you have it. The answer is 7. Hope this helps! :)
.15 x (-0.6)
help me please
The answer is −0.09
It should be simple multiplication.
I hope this helps!
HELP NOW PLZ!! RIGHT NOW!!
Answer:
out of
Step-by-step explanation:
Answer:
(1) divided by, (2) quotient of, (3) out of, (4) unit price, (5) ratio of.
Step-by-step explanation:
are signal words indicating division will be used
A policy analyst would like to predict salary from a set of four predictor variables for a sample of 45 athletic trainers. A multiple linear regression analysis was conducted. Complete the following ANOVA summary table for the test of significance of the overall regression model. Except for the P-value, report all answers accurate to 3 decimal places; report the P-value accurate to 4 decimal places. Use a significance level of α=0.05.
Source SS df MS F P-value
Regression 20
Residual 400
TOTAL
What is your decision for the hypothesis test?
Reject the null hypothesis, H0:β1=β2=...=β4=0
Fail to reject H0
What is your final conclusion?
The evidence supports the claim that one or more of the regression coefficients is non-zero
The evidence supports the claim that all of the regression coefficients are zero
There is insufficient evidence to support the claim that at least one of the regression coefficients is non-zero
There is insufficient evidence to support the claim that all of the regression coefficients are equal to zero
To make a decision for the hypothesis test, we need to analyze the ANOVA summary table for the test of significance of the overall regression model.
From the table, we can see that the regression sum of squares (SS) is given as 20, and the residual sum of squares (SS) is given as 400. We also know that the total sum of squares (SS) is the sum of the regression SS and the residual SS.
Since the degrees of freedom (df) for the regression model is equal to the number of predictor variables (k) minus 1 (k - 1), and the df for the residual is the total sample size (n) minus the number of predictor variables (k), we can calculate the df for the regression and the residual.
Given that the sample size (n) is 45 and the number of predictor variables (k) is 4, we can calculate:
df for regression = k - 1 = 4 - 1 = 3
df for residual = n - k = 45 - 4 = 41
Next, we need to calculate the mean square (MS) for the regression and the residual by dividing the SS by their respective degrees of freedom.
MS for regression = SS for regression / df for regression = 20 / 3
MS for residual = SS for residual / df for residual = 400 / 41
Finally, we can calculate the F-statistic by dividing the MS for regression by the MS for residual.
F = (MS for regression) / (MS for residual)
Now, we can compare the calculated F-statistic to the critical F-value at the given significance level (α = 0.05). If the calculated F-statistic is greater than the critical F-value, we reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.
Without the information of the critical F-value or the calculated F-statistic, we cannot make a definitive decision or final conclusion for the hypothesis test. Please provide the necessary values, and I will be able to help you with the decision and conclusion.
To know more about hypothesis test refer here:
https://brainly.com/question/29996729?#
#SPJ11
Please help thank you
Answer:
∠ A = 138° , ∠ C = 75°
Step-by-step explanation:
ABCD has parallel bases and is a trapezium
each lower base angle is supplementary to the upper base angle on the same side.
∠ A + 42° = 180° ( subtract 42° from both sides )
∠ A = 138°
∠ B + ∠ C = 180 , that is
12x - 3 + 9x - 6 = 180
21x - 9 = 180 ( add 9 to both sides )
21x = 189 ( divide both sides by 21 )
x = 9
Then
∠ C = 9x - 6 = 9(9) - 6 = 81 - 6 = 75°
On a certain hot summer day, 673 people used the public swimming pool. The daily prices are 1.75 for children and 2.00 for adults.The receipts for admission totaled to $1249.50. How many children and how many adults swam at the public pool that day?
Answer:
120 children and 388 adults bought tickets for the swimming pool
Explanation:
Create two simultanous equations:
Let c stand for the number of children that bought a ticket, and a stand for the number of adults that bought a ticket, you get your first equation, being
c
+
a
=
508
then, you now create a second equation for the prices of the tickets.
(price of childrens tickets)(number of children that swam)+(price of adults tickets)(number of adults that swam) = total money collected
so:
1.75
c
+
2.25
a
=
1083.00
now we still know, that
a
=
508
−
c
so we can substitute it into the second formula
1.75
c
+
2.25
(
508
−
c
)
=
1083
now its just simple algebra
1.75
c
+
1143
−
2.25
c
=
1083
60
=
0.5
c
so:
c
=
120
now we know, that 120 children went to the swimming pool.
and we still have the formula from before:
a
=
508
−
c
so
a
=
388
--- Ensures items requested match item numbers on DA Form 3151-R
--- Loads and secures the ammunition
--- Placards the vehicle
Which of the following tasks does the unit personnel perform when receiving ammunition?
When receiving ammunition, unit personnel perform three tasks: ensuring items requested match item numbers on DA Form 3151-R, loading and securing the ammunition, and placarding the vehicle.
The first task performed by unit personnel when receiving ammunition is to ensure that the items requested match the item numbers on DA Form 3151-R. This form serves as a record of the types and quantities of ammunition being received. By comparing the requested items with the item numbers on the form, personnel ensure accuracy and prevent any discrepancies or errors in the delivery.
The second task involves the loading and securing of the ammunition. Unit personnel are responsible for safely and efficiently loading the ammunition onto the designated vehicle or storage area. This includes following proper handling procedures, using appropriate equipment, and adhering to safety protocols. The ammunition must be securely stored and arranged to prevent shifting or damage during transportation.
The final task is to placard the vehicle. Placarding involves visibly displaying the necessary warning signs or labels on the vehicle that indicate the presence of ammunition. This step is crucial for safety and compliance purposes, as it alerts other personnel and drivers to exercise caution when approaching or handling the vehicle. Clear and prominent placarding helps prevent accidents and ensures that everyone involved is aware of the potential hazards associated with transporting ammunition.
Learn more about unit here:
https://brainly.com/question/29282740
#SPJ11