Answer:
so I belive the answer is -75/16 simplified as -4 11/16
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;
https://brainly.com/question/17177510
#SPJ1
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:
HELPPPPPPP PLZZZZZZZZ
Answer:
azesrdftgyuh
Step-by-step explanation:
dxcfvghbj
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
#SPJ1
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
64^2/3
does anybody know how to do this?
Step-by-step explanation:
64^2/3
=(2^6)^2/3
=(2)^6×2/3
=(2)^2×2
=2^4
=16
6th grade math that I forgot please help
Can someone plz help me plz I beg u :/
Answer:
i think the answer is b
Step-by-step explanation:
the others just dont feel right
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
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
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.
What are the domain and range of the linear function shown below?
Answer:
ffffffffffffffffffffffffffffffffffffffffeesf ea a
Step-by-step explanation:
Would you rather lose the ability to cry or cry every day for 20 minutes randomly?
Answer:
Lose the ability to cry because i dont cry that much
Step-by-step explanation:
Answer:
loose the ability to cry l m a o
Step-by-step explanation:
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
An arborist examined trees in an orchard to see if they were infected with a virus. The arborist counted 7 infected trees and 43 healthy trees. What percentage of the trees in the orchard were infected?
Answer: Percentage of infected trees =2%
Step-by-step explanation:
Number of Infected trees =7
Number of healthy trees=43
Total number of trees in the orchard=43+7=50
Percentage of infected trees =Number of Infected trees/Total number of tress in the orchard x 100
7/50 x 100 =2%
express (2+4√6)÷(3√2-1) in the form p√2+q√3 where p and q are rational numbers
A semi-trailer in the shape of a rectangular prism, has inside measurements of 53 feet, 8 feet, and 8.5 feet. What is the volume of the trailer?
Answer:
4.5
Step-by-step explanation:
URGENT!!
Solve for X
Answer:
[tex]\frac{X}{100} =\frac{600}{800} \\\\X = \frac{6}{8} \times 100 = 75[/tex]
Find the volume of this cone.
Use 3 for TT.
3
6cm
V ~ [?]cm3
V
5cm
Enter your answer in decimal form.
HELP ME
Step-by-step explanation:
[tex]volume = \frac{1}{3} \pi {r}^{2} h \\ = \frac{1}{3} \times 3 \times {2.5}^{2} \times 6 \\ = 37.5 \: {cm}^{3} [/tex]
Answer:
37.5
Step-by-step explanation:
..
.
.
.
.
.
.
.
.
..
.
.
.
here this is the answer..
Math problem help plz
(don't send links will report u)
ASAp
$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
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.
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 ?
A box contains 7 red marbles, 4 white marbles, and 5 blue marbles. If only white marbles are added to the box, how many must be added to
make the probability of drawing a white marble ş?
A: 1
B: 2
C: 5
D. 7
E: 12
PLEASE NO LINKS Thanks :))
Answer:
C: 22 points.
Step-by-step explanation:
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:
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.
Which numbers are factors of both 12 and 42?
Answer:
12
Step-by-step explanation:
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
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