A recent survey of 8,000 high school students found that the mean price of a prom dress was $195. 00 with a standard deviation of $12. 0. Alyssa thinks that her school is more fashion conscious and spent more than $195. 0. She collected data from 20 people in her high school and found that the average price spent on a prom dress was $208. 0. Which of the following is the correct z-statistic for this situation? 0. 24 4. 84 7. 51 96. 90.
Answers
Answer:4.84
Step-by-step explanation:
Answer: Check attached :) Right on ED22
Step-by-step explanation:
Related Questions
I WILL GIVE BRAINLIEST TO CORRECT ANSWER
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find the maximum height reached by the rocket, to the nearest tenth of a foot.
y=−16x^2+146x+137
Answers
Answer:
470.1
Step-by-step explanation:
Since this is a parabola that opens down, the maximum height is where the graph has a horizontal tangent line.
This is where the derivative=0
Since it is a parabola that opens down, we do not need to test the sides of the point where the derivative=0 as the vertex is a local maximum and the only point with a horizontal tangent.
y=[tex]-16x^2+146x+137[/tex]
y'=[tex]-32x+146[/tex]=0
-32x+146=0
x=[tex]\frac{146}{32}[/tex]=[tex]\frac{73}{16}[/tex] This is the x-coordinate of the vertex
Now plug this back into the original equation to find the maximum height.
f(73/16)=[tex]-16(\frac{73}{16})^2+146(\frac{73}{16} )[/tex]+137
=[tex]\frac{-73^2}{16} +666.125+137[/tex]
=-333.0625+666.125+137
=470.0625
To the nearest tenth this is 470.1
It is normal for some newborn babies to lose weight in their first week of life. Baby Todd's birth weight was 10 pounds. One week after being born, he is 10% lighter. What is Todd's current weight? pounds Submit
Answers
Answer:
9 pounds
Step-by-step explanation:
100% - 10% = 90%
90% -> .9
[Solving] 10 * .9 = 9
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Answer:
9 pounds
Step-by-step explanation:
10% of 10 pounds is 1 pound so baby Todd's current weight is 9 pounds.
The length of the base of an isosceles triangle is x. The length of a leg is 2x-6. The perimeter of the triangle is 38. Find X
Answers
Answer:
x = 10
Step-by-step explanation:
Perimeter of a triangle = the sum of the three sides.
In an isosceles the legs are equal (2x - 6) and the base is x
Perimeter = (x) + (2x - 6) + (2x - 6)
38 = 5x - 12
38 + 12 = 5x
50 = 5x
[tex]\frac{50}{5} = \frac{5x}{5}[/tex]
10 = x
Find the perimeter. Simplify your answer.
Answers
2(7b + 1) + 10b
14b + 2 + 10b
24b + 2
I NEED HELP!!!!!!!!!!!!
Answers
Answer:
Step-by-step explanation:
123
What is a quarter of 2770?
Answers
Answer:
692.5
Step-by-step explanation:
Answer:
it's 692.5
I hope it's right
How do you get the volume of a 3d object? How could the way to calculate volume help certain people like construction workers?
Me will give brainliest to the person whose answer is the best.
Answers
Answer:
The way to calculate the volume of a 3D object like a cube is by multiplying the length times the width and the height or you could also use base times the height to find the volume. The way to calculate the volume could help construction workers to see how much area the building takes up and a lot of other stuff.
Step-by-step explanation:
please help me the last question is wrong
Answers
Answer:
Step-by-step explanation:
The temperature at 6 am was −3°C. By lunch time the temperature had risen by 5°C. What was the temperature at lunch time?
Answers
Answer:
2°C
Step-by-step explanation:
just add 5 to -3
-3+5=2
so ur answer is 2
The graph of the piecewise function f(x) is shown.
1 f(x)
Answers
Answer:
In a word processing document or on a separate piece of paper, use the guide to construct a two-column proof proving that lines l and m are parallel.
Airline fares are $200 for first class and $150 for business class. If a flight had
52 passengers who paid a total of $8500. How many first class passengers.
we’re on the trip?
Answers
Answer:
14 first class passengersStep-by-step explanation:
Set a system of equations as below:
x + y = 52200x + 150y = 8500Multiply the first equation by 150 and subtract from the second equation.
This will eliminate y, solve for x:
200x + 150y - 150x - 150y = 8500 - 150*5250x = 700x = 700/50x = 14Drag each shape to the correct category.
Identify which shapes are similar to shape A and which are not.
Answers
Answer:
Step-by-step explanation:
simplify (x^5-y^5) ÷(x-y) (this question is a part of polynomials chapter) please explain and tell me the answer
Answers
Answer:
Step-by-step explanation:
[tex]x^{n}-y^{n} =(x -y)(x^{n-1} + x^{n-2}*y^{1} +......+ xy^{n-2} + y^{n-1}\\\\\dfrac{x^{5}-y^{5}}{x-y}=\dfrac{(x -y)*(x^{4}+x^{3}*y^{1}+x^{2}*y^{2}+x*y^{3}+y^{4}}{(x-y)}\\\\[/tex]
= x⁴ + x³y + x²y² + xy³ + y⁴
rail fares go up by 10%, and josie’s new season ticket to london costs £1342. calculate how much more she has to pay now than she did before the 10% increase was added
Answers
Answer:
£134.2 more
Step-by-step explanation:
Divide 1342 by 100
Then you get 13.42
Times that by 10 and £134.2 is 10%
The sales tax in your city is 8.8\%8.8%8, point, 8, percent, and an item costs \$63$63dollar sign, 63 before tax.
How much tax would you pay on that item?
Round to the nearest hundredth or cent.
Answers
Answer:
68.54 dollars is you answer you would do 63 times .088 and add 63 to your answer
Step-by-step explanation:
Find the perimeter of an isosceles triangle. The base is 3y and each side is (0.6y-7).
Answers
Answer:
Perimeter = 4.2y - 14
Step-by-step explanation:
Perimeter of a triangle = the sum of the three sided of the triangle.
In an isosceles triangle, there are two equal sides and a base.
Perimeter = (0.6y - 7) + (0.6y - 7) + 3y
Perimeter = (0.6y + 0.6y + 3y) - 7 - 7
Perimeter = 1.2y + 3y - 14
Perimeter = 4.2y - 14
What is the approximate area of a circle with a diameter of 10in
Answers
Answer:
A≈78.54in²
Step-by-step explanation:
Can I have brainliest pls?
CHINESE SOCIAL CREDIT POINTS
What do you think about Mao Tse-tung
Answers
Answer:Stuff Step-by-step explanation:
Jenny played four games of golf. For these games her modal score was 76 and her mean score was 75. Her range of scores was 10. What were her scores for the four games?
Answers
Modal score is 76, so at least two of the 4 game scores must be 76.
That’s all I’ve got:)
Help?????????????????
Answers
Answer:
the first option is the answer
Step-by-step explanation:
i need some help with simple algebra! using pemdas :p
Answers
Answer:
the answer is 69
Step-by-step explanation:
the step by step explanation is that 2+2+4
pemdas
perenthasy
exponents
multiplication
division
adition
subtraction
Gavin has 50 tokens and continues to ride the roller coaster 3 times every hour (the roller costar costs 6 tokens to ride). Gibson has 12 tokens and finds 2 more tokens on the ground each hour. How long until they have the same number of tokens?
Answers
Answer:
have a good day
Step-by-step explanation:
shape it helps Bye
4.) You paid $51 for four tickets to a play. What is the unit price?
O $12.75
$12.50
O $13.00
$12.00
Answers
Answer:
$12.75
Step-by-step explanation:
To find the unit price of something divide the cost by the amount of the Item
What expressions are equivalent to -6+4q+(-6q)
Answers
Simplified answer:
-6 - 2q
Step-by-step explanation:
-6 + 4q + (-6q)
=> -6 + 4q - 6q
=> -6 + (-2q)
=> -6 - 2q
I think this is the expression. Try to simplify your options and see if one of them equal to -6 - 2q. Hoped this helped.
the deer population in georgia was 450,000 in 2010, and the population doubles every 5 years. in what year will the deer population in georgia reach 1 million
Answers
Answer:
We know that in 2020 the population of deer will be 900,000 based on the given numbers. In another 5 years the population will be over 1 million (1,350,000) in order to calculate when it will reach 1 million we need to see how much growth is gained per year. I believe to obtain that information we will need to divide 450,000 by 5 that equals 90,000 a year. So if I’m 2020 the population of deer will be 900,000 than add 90,000 until you reach your 1 million marker. In this case 2021 would be 990,000 thousand so 2022 would be 1,080,000. So your answer should be year 2022. Hope that helps
49 kilogram of baking soda costs $2. How much does 1 kilogram of baking soda cost?
Answers
Answer:
4.5
Step-by-step explanation:
Answer:
4.5
Step-by-step explanation:
4.5
PLEASE HELP ME……………..
Answers
Answer: chrome
Step-by-step explanation: go to a new tab then search it up.
What is the y-coordinate of the y-intercept of function d(x) ? y=-8(X-(5/2) (X+3)
Answers
Answer:
(0,60)
Step-by-step explanation:
I hope I plugged in your equation the right way as you typed it, but this is where the line meets the y coordinate, (0,60)
Here is a scale drawing of a garden.
Tom wants to plant a tree in the garden according to the following rules:
it must be 4 m from A and 2 m from CD.
Place a cross where Tom can plant the tree.
Answers
The location of the tree can be found by taking point A as the origin of
coordinate plane, represented by the drawing area.
Response:
The the graph showing the location where Tom can plant the tree is attached.Method used to find the location for planting the treeThe area Tom wants to plant the tree in the garden is given by the following rule;
Distance of the tree from A = 4 m
Distance of the tree from CD = 2 m
1 cm in the scale drawing = 2 m
Solution:
Taking point A as the origin, we have;
The location of the tree from point A is given by the radial length, r = 2 cm.
The distance of the tree from the line CD is given by the line, y = 1.5 cm,
given that 1 cm from CD = 1.5 cm from point A
Therefore, we have;
The y-coordinate of the location of the tree is; y = 1.5Equation of the circular distance from A is; x² + y² = r²Where;
r = 2
y = 1.5
We have;
x² + 1.5² = 2²
x² = 2² - 1.5² = 1.75
x = √(1.75)The coordinate of the location of the tree from A is; (√(1.75), 1.5) Please find attached, the graph showing the location where Tom can plant the tree in relation to point A.
Learn more about the coordinate plane here:
https://brainly.com/question/11252677
The cost x of the Sennet family’s meal at a restaurant is $172.65, and they tip 20%. Write and use an equation to find the total cost y of the dinner.
Answers
Answer:
the answer would be 196.25
Step-by-step explanation: