Need help on a statistics question
Given:
The equation of the line of best fit is :
[tex]y=4.722392638x+50.99539877[/tex]
To find:
The x-intercept and check whether it make sense in this context.
Solution:
We have,
[tex]y=4.722392638x+50.99539877[/tex]
Substitute [tex]y=0[/tex] to find the x-intercept of the given best fit line.
[tex]0=4.722392638x+50.99539877[/tex]
[tex]-50.99539877=4.722392638x[/tex]
[tex]-\dfrac{50.99539877}{4.722392638}=x[/tex]
[tex]-10.7986359202=x[/tex]
So, the x-intercept is at point (-10.7986359202,0). It means the score on final examination is 0 if -10.7986359202 hours spent on studying.
But is does not make sense because the number of hours cannot be negative.
A student studied for 1 hour and earned a 50% on her test. If she had studied for 2
hours, she would have scored a 100% on her test. Help asap please
You have to double 1 and 50 to get 2 and 100
1:50 = 2:100
1x2=2
50x2=100
So the statement, if she studied for 2 hours, she would have gotten 100%, makes sense
Hope this helps!
Solve for x
[tex]25x = 100[/tex]
Answer:
Solution is x = 4
Step-by-step explanation:
Divide both sides of the given equation by 25, obtaining:
25x 100
--------- = -------- = 4
25 25
Solution is x = 4
At cycle and sport, customers can rent bikes, electric scooters, kayaks, canoes or paddleboards by the hour. Ari is renting a bike, meg is renting a electric scooter.
Answer:
Option A, 9b + 10s is correct
Step-by-step explanation:
The complete question is
At cycle and sport customers can rent bikes, electric scooters, kayaks, canoes, or paddleboards by the hour. Ari is renting a bi ke, and meg is renting an electric scooter. Which expression represents the total cost for Ari to rent a bike for b hours and Meg to rent a scooter for s hours (Please answer ASAP) A. 9b + 10s B. 9 + 10 C. (9+b) + (10 + s) D. 9 + 10 x b + s
Solution
The price of renting a bike for one hour is $9
The price of renting a scooter for one hour is $10
Given -
Ari rents a bike for b hours and Meg rents a scooter for s hours
Total cost of renting a bike is 9 * b
Total cost of renting a scooter is 10* s
The total cost of renting both the bike and scooter is
9b + 10s
Hence, option A is correct
What is the area of the trapezoid?
Answer:
area = 432 ft²
Step-by-step explanation:
area = 1/2(B1 + B2)(H)
area = 1/2(20 + 16)(24) = 432 ft²
Mhanifa please help i will mark brainliest :)
Answer:
YesStep-by-step explanation:
Given triangles:
ΔTUV and ΔXYZVerify the ratio of corresponding sides:
TU/XY = 15/35 = 3/7UV/YZ = 21/49 = 3/7TV/XZ = 18/42 = 3/7Since the ratios are same, the triangles are similar
R'(-1,9) is the image of R after a reflection in the x-axis. What are the coordinates of R?
New coordinates are (-1, -9) Hope this helps!
Mark and his three friends ate out at Applebee’s. Their bill totaled $52. If they left the server a 20% tip, how much would each person pay if they split the bill evenly? *
Answer:
$15.71 each
Step-by-step explanation:
I just followed the answer sheet
Answer:
$13.05
Step-by-step explanation:
Given: Mark and his 3 friends = 4 Total cost = $52, percent off: 20%
To find: How much each person would pay if they split the bill evenly.
Solution:
Firstly, since they left the server a 20% tip, multiply 20% by the total cost. Convert it to a fraction. Note: you're adding 20% to the total cost.
[tex]\frac{20}{100}[/tex] + [tex]\frac{52}{1}[/tex]
= [tex]_{52.2}[/tex]
Now, that is done, let's divide the newly found cost by the four friends.
[tex]\sqrt[4]{52.2}[/tex]
= [tex]{13.05}[/tex]
So, they would pay $13.05 evenly.
Which expression is equivalent to 2w? w+w
2w+w
2w-w
w+2
Answer:
It is equivalent to w+w
Step-by-step explanation:
w+w= 2w
Answer:
A w+w
Step-by-step explanation:
because 2w means 2 * w ( 2 times w)
when you multiply 2 time any number, you add that number twice,
exp... 4 times 2 = 4 + 4
therefore 2w is also w+ w
Use Euler's Formula to find the missing number.
Edges: 29
Faces: 17
Vertices: ?
13
14
15
17
Answer:
The answer is 14
Step-by-step explanation:
I just took the test and got it right
1. Find the area of the parallelogram.
What is the area?
Answer:
67.5[tex]in^{2}[/tex]Step-by-step explanation:
Area of a parallelogram is base x height
The base of the given parallelogram is 9 inches and the height is 7.5 inches
So, its area would be
9 x 7.5
Area equals [tex]67.5^{2}[/tex]
The rectangular prism shown is made up of unit cubes. Each unit cube has a length of one inch, a width of one inch, and a height of one inch. The volume of the rectangular prism is cubic inches. One unit cube is placed on top of each unit cube in the top layer. The volume of the new prism is cubic inches. Three layers of unit cubes are removed from the new rectangular prism. The final volume is cubic inches.
Answer:
cube" (and any subsequent words) was ignored because we limit queries to 32 words.
PLZZZ HURRY NEED ANSWER ASAP
Describe the sequence of
transformations that maps APQR onto AP'Q'R'. Use the drop-down menus to explain your answer.
A rotation of_________ and a translation of_________.
A rotation of:
270 degrees
180 degrees
90 degrees
45 degrees
A translation of:
1 unit down
2 unfits up
1 unit up
2 units down
If I'm not wrong it should be 180 degrees and a translation of 1 unit down.
Write the slope intercept equation for given points (3,-1),(5,5)
Answer:
Hi! The answer to your question is [tex]y=3x-10[/tex]
Step-by-step explanation:
☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆
☁Brainliest is greatly appreciated!☁
Hope this helps!!
- Brooklynn Deka
Answer:
y = 3x - 10
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (3, - 1) and (x₂, y₂ ) = (5, 5)
m = [tex]\frac{5+1}{5-3}[/tex] = [tex]\frac{6}{2}[/tex] = 3 , then
y = 3x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (5, 5 ) , then
5 = 15 + c ⇒ c = 5 - 15 = - 10
y = 3x - 10 ← equation of line
The half-life of a radioactive kind of antimony is 60 days. If you start with 720 grams of it, how much will be left after 180 days?
A team of biologists is studying a population of 800 fish they find that 15 out of every 75 fish are more than 30cm long based of this result how many fish in the population are 30 cm or less in length
Answer:
640
Step-by-step explanation:
Since 15 out of every 75 fish are more than 30 cm long, the probability of finding a fish more than 30 cm is P(x > 30) = 15/75 = 1/5.
The probability of finding a fish 30 cm or less is P(x ≤ 30) = 1 - P(x > 30)
= 1 - 1/5
= (5 - 1)/5
= 4/5
Since we have 800 fish and the probability of finding a fish 30 cm or less is P(x ≤ 30) = 4/5, then the number of fish in the population that are 30 cm or less in length are 800 × P(x ≤ 30) = 800 × 4/5
= 160 × 4
= 640
So, 640 fish in the population are 30 cm or less in length
Can someone pleaseeee help and if you’re correct i’ll give brainliest
Answer:
12.57
Step-by-step explanation:
These box plots show daily low temperatures for a sample of days in two
different towns.
Town A
15 20
30
40
45
Town B
2
35 40 45 48
0
5
10 15 20
25 30 35 40 45 50 55 60
Degrees (F)
Which statement is the most appropriate comparison of the centers?
It's D. the median for town A, 30, is less than the median for town B, 40.
The median for town A at 30° is less than the median for town B at 40°.
So, option (D) is the correct answer.
What is the median?The median is the "middle" of a sorted list of numbers. To find the median, place the numbers in value order and find the middle number".
For the given diagram,
Town A has temperatures = 20°, 30°, 40°
Town B has temperatures = 30°, 40°, 50°
The median of A = 30°
The median of B = 40°
Hence, From the above values, the median for town A at 30° is less than the median for town B at 40°.
Hence, we can conclude that option (D) is the correct answer.
Learn more about median here
brainly.com/question/16949317
#SPJ7
help pls i'll mark u brainliest
Step-by-step explanation:
I hope the answer helps u dear
HELP FOR 20 points !!!!!
A truck that has a mass of 2900kg and is moving down a hill that is 5 m high. What is the potential energy?
EVERYTHINGS IN THY PICTURE!!
Answer:
Constant of proportionality is 4Step-by-step explanation:
Perimeter of a square with side a:
P = 4a,P- dependent value, 4- constant of proportionality, a- variable
When a = 11 cm,
P = 4*11 = 44 cmAnswer:
Step-by-step explanation:
Constant of proportionality is 4
Lucia is putting cookies into Bag cuz she has 35 cookie she wants to put three cookies each bag she divides find out how much bags she can feel
the division wiil be as 33 ÷3 =11 bags and she wil have 2 remained cookies she should eat them
Help me find y..........
Answer:
2nd
Step-by-step explanation:
x=10
y²=x²+10²=200
y=10√2
will mark brainlist + 30 points .. please help asap!!
This probability distribution shows the
typical distribution of the number of shoes
in a teenager's closet.
Shoes
1
2
3
4
5
Frequency
12
20
38
20
10
Using this distribution, find the probability
that a teenager has exactly 2 pairs of shoes
in their closet.
p = [?]
Answer:
is 20 is your answer I believe
Answer:
p=2/20
p=1/10
the probability that a teenager has exactly 2 pairs of shoes is 1/10
This is very confusing to me, if anyone can help me I will most definitely give them the brainiest.
Answer: figure 1 and 4
Step-by-step explanation: just multiple width times length and see if they give the same answer.
hoped this helped.
Tho is how triangle looks
Answer:
you are right
Step-by-step explanation:
plus that is a very weird triangle
have a great day
Your family spends $30 for tickets to an aquarium and $3 per hour for parking. Write an equation that gives the total cost of your family’s visit to the aquarium as a function of the number of hours that you are there. If your family stays for 8 hours, how much money did your family spend for the visit?
Answer:
$54
Step-by-step explanation:
Total cost = ticket cost + parking cost:
C(x) = $30 + ($3/hr)x
An 8-hour stay would cost:
C(8) = $30 + ($3/hr)(8) = $54
Hi how do I do this ❤️
Answer:
51
Step-by-step explanation:
A rectangle is 64cm long 40cm wide find is area and perimeter
Answer:
Area= 2560 Perimeter= 208
Step-by-step explanation:
Answer:
64 x 40 = 2,560 <------- your area because multiply the two given lengths.
64 + 64 + 40 + 40 = 208 <---------- your perimeter since opposite sides are parallel which means 2 sides are different. So two of both of the different lengths will be your perimeter.
Step-by-step explanation: