Answer:
Step-by-step explanation:
Equation for a circle of radius r, centered at (h,k):
(x-h)² + (y-k)² = r²
x² + (y+3)² = 9 is the equation for a circle of radius 3, centered at (0,-3).
Option D - Coordinate plane with no numbers marking the units. A circle is drawn on the plane, with the center at the labeled point begin ordered pair 0 comma negative 3 end ordered pair. The perimeter of the circle goes through the labeled point begin ordered pair negative 3 comma negative 3 end ordered pair IS CORRECT.
We have a equation of circle -
[tex]x^{2} +(y+3)^{2} = 9[/tex]
We have to find out which statement correctly represents the graph of this equation.
What is the general equation of circle?The general equation of the circle with radius r and center at (h, k)
is - [tex](x-h)^{2} +(y-k)^{2} =r^{2}[/tex]
The equation given to us is -
[tex]x^{2} +(y+3)^{2} = 9[/tex]
On comparing it with the general equation of the circle, we get -
[tex]x-h=x\\h=0\\\\y-k=y+3\\k=-3\\\\r^{2} =9\\r=3[/tex]
Therefore, we have a circle whose center lies at (0, -3) with radius = 3 units.
At point P(3, 3) -
[tex](-3)^{2}+(-3+3)^{2} =9\\9=9[/tex]
Hence, Option D - coordinate plane with no numbers marking the units. A circle is drawn on the plane, with the center at the labeled point begin ordered pair 0 comma negative 3 end ordered pair. The perimeter of the circle goes through the labeled point begin ordered pair negative 3 comma negative 3 end ordered pair is correct.
To solve more questions on the general equations of circle, visit the link below -
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please help me with thsi
Answer:
with what
Step-by-step explanation:
Evaluate the expression,
2(x + 3y) - 4
Answer:
2x+6y-4
Step-by-step explanation:
First distribute x and 3y
2 times x is 2x
2 times 3 is 6y
(2x+6y) -4
2x+6y-4
Hope this helps!
Answer:
2(x+3y-2)
Step-by-step explanation:
See the steps below:)
Learning Task Find the perimeter and area of each figure
Perimeter
Area
om
som
So
Answer:
Step-by-step explanation:
1. Perimeter: 8cm + 8cm + 3cm + 3cm = 22cm
Area: 8cm x 3cm = 24cm
2. Perimeter: 5m + 5m + 5m + 5m = 20m
Area: 5m x 5m = 25m
3. Perimeter: 4m + 4m + 18m + 18m = 44m
Area: 4m x 18m = 72m
Target #3
The four concentric circles shown have diameters 10 cm, 14 cm, 20 cm and 28 cm. What is the total area of the shaded regions? Express your answer to the nearest whole number ?
express (2+4√6)÷(3√2-1) in the form p√2+q√3 where p and q are rational numbers
Alyssa is tracking the growth of a plant.
• The plant grows c inches in the first week and n inches
in the second week.
Enter an equation to show that the plant grows 2 inches more
in the second week than in the first week.
An equation to show that the plant grows 2 inches more in the second week than in the first week is n = c + 2.
How to write an equation to show the plant's growth in the second week?In this scenario and exercise, you are required to write a linear equation to model the plant's growth in the second week with respect to the first week.
In order to write a linear equation to describe this situation, we would assign variables to the height of the plant in the first week and the height of the plant in the first week respectively, and then translate the word problem into an algebraic equation (linear equations) as follows:
Let the variable c represent the height of the plant in the first week.Let the variable n represent the height of the plant in the second week.Since the plant grew c inches in the first week, a linear equation to describe the height of the plant in the second week is given by;
n = c + 2
Read more on linear equation here: brainly.com/question/25858757
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The acute angle formed between the x-axis and the hypotenuse of a right triangle drawn in the unit circle.
A. right angle
B. reference angle
C. standard angle
D. obtuse angle
Answer:
b
Step-by-step explanation:
If f(x) = x^2 is a function of variable x. The function is translated 5 units to the left and is reflected across the x-axis. What is the new function?
Solving by Completing the Square
2x^2 - 2 - 3x = 0
Step-by-step explanation:
sorry..if it is wrong..I tried...........
Can someone help me with this!!!!!!
Answer:
The answer is 17.58
i’m honestly very confused on how to figure this out
Answer:
y = -1/2 = -0.500
Step-by-step explanation:
your welcome have a good day :)
stay safe
stay hydrated
wear a mask
┐(^▂ ^ ；)┌
WILL CROWN BRAINLIEST
Clara is finding a quotient using a calculator. Which value represents the quotient when 4.5 x 10^8 is divided by 9 x 10^4?
A. 0.2E-5
B. 0.2E-4
C. 5E+3
D. 5E+4
A company manufactures aluminum mailboxes in the shape of a box with a half-cylinder top. The company will make 1384 mailboxes this week. If each mailbox
has dimensions as shown in the figure below, how many square meters of aluminum will be needed to make these mailboxes? In your calculations, use the
value 3.14 for pi, and round up your answer to the next square meter.
2
m
?
0.4 m
0.2 m
0.55 m. NEED THIS URGENT THANKS
Answer: subject?
Step-by-step explanation:
i really need help please help me
Answer:
it's c
Step-by-step explanation:
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
9514 1404 393
Answer:
A. 10 units
Step-by-step explanation:
The y-intercept of f(x) is f(0) = -9.
The y-intercept of g(x) is g(0) = g(1)/2 = 1.
The distance between these points is ...
1 -(-9) = 10 . . . units
__
We notice that the common ratio of the table values of g(x) is 4/2=2, so the value for x=0 will be a factor of 2 less than the value for x=1.
If a car goes 280 miles in 4 hrs how far could it go in 6 hrs and 30 mins
NO LINKS:)
Have a great day
Answer:
280/4 = 70 miles per hour. Next, take the unit rate and multiply it by the number of hours you are trying to find. In this case, you are trying to find 6 hours and 30 minutes, but this can also be rewritten as 6.5, since 30 minutes is half an hour. So, in 6.5 hours, the car can go 455 miles
State if the triangle is acute, obtuse, or right.
7 cm
12 cm
13 cm
B) Obtuse
A) Acute
C) Right
Answer:
It's an acute triangle
Step-by-step explanation:
What is the length of the dotted line in the diagram below? Round to the nearest tenth.
Answer:
length of dotted diagonal line = 11
Step-by-step explanation:
Using the Pythagorean theorem:
length of rectangle² = 9² + 6² = 81 + 36 = 117
length of rectangle = √117 = 10.82
length of diagonal² = 2² + 10.82² = 4 + 117 = 121
length of diagonal = 11
A rectangular prism had a volume of 99 cubic centimeters. The length of this prism was changed from 3
centimeters to 6 centimeters to create a new rectangular prism. The other dimensions stayed the same.
What is the volume of this new prism?
Answer:
hhjjjhhhhhhhjnujjiki9jhbhhbbn
PLEASE HELPP IM VERy CONFUSED IM MAKING IT WORTH 45 PLEASE HELP!!!!! WILL MARK BRAINLIEST
The height, h, in feet above the ground of a person riding a Ferris wheel can be modeled with the equation
h(t)=-45cos (pi/4 t) +52, where t is the number of minutes since boarding the ride.
(a) At what height does the person board the wheel? Explain how you arrived at your answer.
(b) How many minutes does one complete rotation of the wheel take?
Answer:
34 i hope this is right good luck to you
no links please i’m in yr7 / sixth grade so don’t make the answer too complicated or it won’t register ot
Answer:
each apple is £ 1.80
Step-by-step explanation:
i first multiplied the cost for one pear by 7, to get how much money was spent on pears out of the 12.70.
Then i took the remaining money and divided it by 2 to get how much each apple costs.
Answer:
1.80
Step-by-step explanation:
1) Price of Pears
[tex]1.30 * 7 = 9.10[/tex] formating: 1.30*7 = 9.10
2) Price of Apples
[tex]12.70 - 9.10 = 3.60[/tex] formating: 12.70-9.10 = 3.60
3) Price of Apples/Kg
[tex]\frac{3.60}{2} = 1.80[/tex] formating: 3.60/2 = 1.80
find the value of x. round to the nearest degree.
Step-by-step explanation:
I'm going with the 41....I'm not sure if it's right..
Answer:
C
Step-by-step explanation:
Using the sine ratio in the right triangle
sin x° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{13}{20}[/tex] , then
x = [tex]sin^{-1}[/tex] ([tex]\frac{13}{20}[/tex] ) ≈ 41° ( to the nearest degree )
According to a study, 68 out of 100 people enjoyed the movie. What percentage of people did not enjoy the movie?
Answer:
32%
Step-by-step explanation:
100 - 68
Answer:
32%
Step-by-step explanation:
subtract 68 from 100 to get your answer
veuillez répondre correctement
Answer:
Actually sorry
The image was not clear
But I will give you a hint.
For similar traingle all the three corresponding angle must be same.There corresponding side are proportional.Notw:
If one side is equal than it is congruent.
PLEASE HELP!!!!
1. What is the space inside an object called? What type of objects have volume?
2. Compare the slopes of parallel lines and perpendicular lines.
3. Explain the difference between a secant and a tangent.
Answer:
1. Volume measured in Cubic units (to the third power), Only 3-D objects have volume.
2. Parallel lines have the same slope and will never intersect. The slope of perpendicular lines are the negative reciprocals of each other, they will intersect a 90 degrees
3. Secant is 1/cosX (1 over cosine of x), tangent is sinX/cosX(sine of x over cosine of x)
Step-by-step explanation:
$1 less than three times the price
Answer:
???????
Step-by-step explanation:
Answer: 3x - 1
Step-by-step explanation:
let x = the price
3x would be three times the price
now minus one dollar would get:
3x - 1
PLEASE HURRY!! A diver jumps off a high diving board that is 33 feet above the surface of the pool with an initial upward velocity of 6 feet per second. The height of the diver above the surface of the pool can be represented by the equation −16t2+6t+33=0
. How long will the diver be in the air, to the nearest hundredth of a second?
The diver will be in the air for approximately 0.78 seconds to the nearest hundredth of a second.
The equation that represents the height of the diver above the surface of the pool is given by:
h(t) = -16t² + 6t + 33
where t is the time in seconds and h(t) is the height of the diver above the surface of the pool in feet.
The diver will be in the air until he reaches the surface of the pool, which means that his height will be 0. Therefore, we can set h(t) equal to 0 and solve for t:
-16t² + 6t + 33 = 0
We can use the quadratic formula to solve for t:
t = (-b ± sqrt(b² - 4ac)) / 2a
where a = -16, b = 6, and c = 33.
Plugging in these values, we get:
t = (-6 ± sqrt(6² - 4(-16)(33))) / 2(-16)
t = (-6 ± sqrt(36 + 2112)) / (-32)
t = (-6 ± sqrt(2148)) / (-32)
Simplifying:
t = (-6 ± 46.34) / (-32)
So we have two solutions:
t = (-6 + 46.34) / (-32) ≈ 0.78 seconds
t = (-6 - 46.34) / (-32) ≈ 2.64 seconds
Since the diver cannot be in the air for a negative amount of time, we reject the second solution.
To learn more about the quadratic equation;
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someone pls help!! :/
Answer:
104
Step-by-step explanation:
ok so to find the area of this triangle you need to use the number you have witch are 16 and 13 so we wana find the area of one side of the triangle witch it has mark ware it needs to be split and so 16 / 2 is 8 and so we have 2 pairs of 8 and now you multiply hight by width and get 8 x 13 is 104 so we devide that by two in order to get one section of the triandle so 104 / 2 is 52 and thats one side of the triangle and now we add 52 by 52 and get 104
WILL GIVE BRAINLIEST
1. A department store kept records of how many fans were sold each day and the high temperature for that day. The results are shown in the scatterplot. Answer the questions about the scatterplot.
a. What is the explanatory variable (independent variable)? (1 point)
b. What is the response variable (dependent variable)? (1 point)
c. Circle the best range for the correlation coefficient. (1 point)
(–1 to –0.7) (–0.7 to –0.3) (–0.3 to 0) (0 to 0.3) (0.3 to 0.7) (0.7 to 1.0)
d. Based on this scatterplot, does a rise in temperature cause more fans to be sold? Why or why not? (3 points)
2. This scatterplot shows the relationship between a player's level in a game and the point total in the level. Answer the questions about the scatterplot.
a. The best model for these data would be (linear / exponential / quadratic). (Circle the correct answer.) (1 point)
b. This table shows the values from the scatterplot. Find the regression equation for the model that you chose in Part a. Round your answer to the nearest hundredth. (3 points)
x
Level
y
Point total
1
124
2
156
3
194
4
240
5
305
6
380
7
477
8
596
9
745
c. Using the equation that you found in Part b, predict the point total in the 10th level. Round your answer to the nearest integer. (2 points)
3. Maria is a veterinarian. She wants to know how the weight of a puppy is related to its length. To find out, Maria randomly selected 10 puppies that are two months old. She recorded the length and weight of each puppy in the table below.
Part A. The data from the table are shown on the scatterplot. Draw an estimated line of best fit through the data points. (3 points)
Part B. Use the scatterplot to answer these questions.
a. What kind of correlation exists between the length and weight of the puppies? Explain. (2 points)
b. Identify two points on the line of best fit that you drew in Part A. Use the two points to find the equation of the line. Write the equation of the best fit line in slope-intercept form. Show your work. (4 points: 1 point for identifying the coordinates of two points, 1 point for slope, 1 point for b-value, and 1 point for showing work)
4. Maria also wants to study the relationship between the weight of puppies at birth and their adult weight (at two years old). She collected data from five randomly selected small-breed dogs and displayed the data in the table.
Birth weight
(pounds)
Adult weight
(pounds)
1.5
10
3
17
1
8
2.5
14
0.75
5
Part A. Use the data in the table to create a scatterplot. (5 points)
Part B. Look at the scatterplot that you drew in Part A. Which regression equation (linear, exponential, or quadratic) do you think would be the best model for these data? To help you decide, think about the adult weight you would expect if the birth weight were larger — say, 10 pounds. Would you expect the pattern in the scatterplot to continue? To grow exponentially? To change direction? Explain your answer. (2 points)
Part C. Perform a linear regression and interpret the results.
a. Use a calculator to perform a linear regression. Round the values your calculator gives you for a and b to the nearest hundredth. (2 points)
y = _______x + _______
b. What is the slope of the regression equation? What does this mean in terms of the birth weight and adult weight? (2 points)
c. What is the value of the correlation coefficient? (1 point)
d. Describe the correlation in terms of strength (weak or strong) and direction (positive or negative). (2 points)
Part D. Analyze the residuals.
Birth weight
(pounds)
Adult weight
(pounds)
Predicted
adult weight
Residual
1.5
10
3
17
1
8
2.5
14
0.75
5
a. Use the linear regression equation from Part C to calculate the predicted adult weight for each birth weight. Round to the nearest hundredth. Enter these in the third column of the table. (2.5 points)
b. Find the residual for each birth weight. Round to the nearest hundredth. Enter these in the fourth column of the table. (2.5 points)
c. Plot the residuals. (3 points)
d. Based on the residuals, is your regression line a reasonable model for the data? Why or why not? (2 points)
5. Decide whether each statement is true or false. (1 point each)
a. T/F: If there is a strong correlation between two variables, the correlation coefficient will be close to –1 or 1.
b. T/F: If there is a negative correlation between two variables, the slope of the regression line will be positive.
c. T/F: If there is a strong correlation between two variables, there is a cause-and-effect relationship.
d. T/F: The best model for data that change direction is a linear model.
e. T/F: A regression line is useful for predicting unknown values within the range of the observed data values.
Answer:
Step-by-step explanation:
Answer to #5: is T, F, F, F, T I'm pretty sure that's correct.
Calculate the area of the red triangle to find the area of the garden. Show your work
side a measures 90 feet and side b measures 120 feet,
ANSWER FAST FOR BRAINLIEST, 30 POINTS. PLEASE HURRYYYY
Answer:
Area of red triangle =1/2 ×side a*side b
=½×90×120=5400ft²