One of the flights was 350 miles and its residual was -
105.00. What was the fare for this flight?
Based on data taken from airline fares and distances
flown, it is determined that the equation of the least-
squares regression line is ý = 102.50 +0.65x, where
ý is the predicted fare and x is the distance, in miles.
O $102.50
O $435.00
O $225.00
O $330.00
Answer:
O $225.00
Step-by-step explanation:
Given that
The one of the flight was 350 miles
And, its residual is 105
The regression line is y = 102.50 + 0.65x
where
y denotes the expected fare
And, x denotes the distance
We need to find out the fair of the flight
So,
y = 102.50 + 0.65 (350)
= 330.00
Now the fare is
= 330 - 105
= 225
Answer:
(C) 225 Is correct.
Predicted cost - residual = answer
y= 102.50 + .65(35)
330 - 105 = 225
255
ED2021
someone please help me with these questions and show your work! i will mark brainliest
Answer:
r^6
4d^3
Step-by-step explanation:
.............
Given the radius is 6 inches, what is the area of the circle?
Area =
inches2 (the 2 is supposed to be an exponent)
Answer:
I wasn't sure how you're supposed to answer, so the answers for each scenario are in the explanation!
Step-by-step explanation:
[tex]A=\pi r^{2}[/tex]
[tex]A=\pi (6^{2})[/tex]
[tex]A=\pi (36)[/tex]
From here, there can be a few different answers:
The exact answer is A=36π inches^2.
If you need to round, round this to wherever you need it: A=113.0973355292326... inches^2
If you're using 3.14 for pi, the answer is A=113.04 inches^2.
If Z1 and Z4 are adjacent and
supplementary, what reason would
support this statement?
Statement
Reason
21 + 24 = 180° [? ]
A. Addition property of equality
B. Linear pair postulate
C. Adjacency theorem
Explanation:
As the name implies, "linear pair" means the two angles combine to form a straight line of 180 degrees. Think of gluing the angles together.
As an example, let's say angle 1 was 50 degrees and angle 4 is 130 degrees. They combine to 50+130 = 180 which is a straight angle. I recommend using a protractor to help draw these angles.
Callie wrote this number to show the change in volume of a water cooler after practice. -9/10
What’s equivalent to what Callie wrote
The correct option is option B that is [tex]\frac{-9}{10}[/tex] is the same number as Callie has written to show the change in volume.
What is a fraction ?
A fraction is used to represent a portion or component of a whole. The numerator and denominator are its two parts.
It is given that Callie wrote a number to show the change in volume of a water cooler after practice which is :
= [tex]\frac{-9}{10}[/tex]
Let's check from the given options which is the correct one.
A)
- [tex]\frac{9}{-10}[/tex]
if we multiply and divide by -1 then we find that the given fraction is equal to :
= [tex]\frac{9}{10}[/tex]
This is not equal to what Callie has written.
B)
[tex]\frac{-9}{10}[/tex] is the same number as Callie has written to show the change in volume. So , this is a correct option.
C)
[tex]\frac{-9}{-10}[/tex] will be equal to [tex]\frac{9}{10}[/tex]. This is because there is negative sign in both numerator and denominator of the fraction , and they will get cancelled. So, this option is not correct.
D)
[tex]\frac{9}{10}[/tex] is not equal to [tex]\frac{-9}{10}[/tex]. To equal both we need to multiply [tex]\frac{9}{10}[/tex] by -1. Thus this option is also not correct.
Therefore , the correct option is option B that is [tex]\frac{-9}{10}[/tex] is the same number as Callie has written to show the change in volume.
Learn more about fractions here :
https://brainly.com/question/17220365
#SPJ2
The sides of a square are all increased by 2 in. The area of the new square is 49 in.^2 . What is the length of a side of the original square?
2 in.
4.5 in.
5 in.
9 in.
Answer:
5
Step-by-step explanation:
square root is 49 is 7
so
1 side is 7
so
original side is 7 - 2
which is
5
Answer:
The original side length was 5 in.
Step-by-step explanation:
Area of new square is (side length)^2. Here,
that area is (x + 2)^2 = 49 in^2, and we must find x.
Taking the square root of both sides, we get:
x + 2 = +√49 = +7
Subtracting 2 from both sides yields x = -2 + 7 or x = 5
Check: does (5 + 2)^2 = 49? YES
Figure B is a scale image of Figure A, as shown. What is the scale factor applied to
Figure A to produce Figure B?
PLEASE FILL IN THE BLANKS WITH THE CORRECT ANSWERS! THIS ASSIGNMENT IS GOING TO BE DUE IN 20 MINUTES. PLEASE BE A KIND PERSON AND HELP ME ANSWER THIS!
Answer:a plus plumbing charges 60 for each hour of work plus a one time fee of 80 dollars
quality plumbing charges 50 for each hour of work plus one time fee of 150
t or f quality plumbing charges the least for 5 hours of work false
Step-by-step explanation:
I think this is correct, no time to explain if you need this answer fast
There was 1/3 of a box of cereal left four brothers shared it evenly write an equation to represent this problem
Answer:
1/12
Step-by-step explanation:
It is given that :
Amount of cereal left = 1/3 of a box
Number of people amongst whom the box of cereal is to be divided equally = 4
Therefore, an equation representing this problem is :
[tex]$\frac{1/3}{4} = x$[/tex]
where x = is the amount of the share each brother gets.
Therefore solving the equation, we get :
[tex]$\frac{1/3}{4} = x$[/tex]
[tex]$\frac{1}{3} \times \frac{1}{4} = x$[/tex]
[tex]$\frac{1}{12}=x$[/tex]
So, each brother got 1/12th of the cereal left.
Marking brainliest
Please help!
A screening examination was performed on 250 persons for factor X, which is found in disease Y. A definitive diagnosis for disease Y among the 250 persons had been obtained previously. The results are charted here: The sensitivity of this test is expressed as: A. 30%. B. 80%. C. 56%. D. 70%. E. 7%.
This question is incomplete, the complete question is;
A screening examination was performed on 250 persons for factor X, which is found in disease Y. A definitive diagnosis for disease Y among the 250 persons had been obtained previously. The results are charted here:
Test Results Disease Present Disease Absent
Positive for Factor X 40 60
Negative for Factor X 10 140
a) Based on the information provided, The sensitivity of this test is expressed as: A. 30%. B. 80%. C. 56%. D. 70%. E. 7%.
b) Based on the information provided, The specificity of this test is expressed as: A. 30%. B. 80%. C. 56%. D. 70%. E. 7%.
Answer:
a)
The sensitivity of this test is expressed as 80%
Option B) 80% is the correct answer.
b)
The specificity of this test is expressed as 70%
Option D) 70% is the correct answer.
Step-by-step explanation:
Given the data in the question;
Test Results Disease Present Disease Absent
Positive for Factor X 40 60
Negative for Factor X 10 140
Number of persons affected by disease with positive factor of X = 40
Number of persons with negative factor of X without the disease = 140
Total number of persons affected by the disease = 40 + 10 = 50
Total number of persons not affected by the disease = 60 + 140 = 200
a) Sensitivity of the Test;
Sensitivity = [( Number of persons affected by disease with positive factor of X ) / ( Total number of persons affected by the disease )] × 100
we substitute
Sensitivity = [ 40 / 50 ] × 100
Sensitivity = 0.8 × 100
Sensitivity = 80%
Therefore, The sensitivity of this test is expressed as 80%
Option B) 80% is the correct answer.
b) The specificity of the test;
Specificity = [ ( Number of persons with negative factor of X without the disease) / ( Total number of persons not affected by the disease ) ] × 100
we substitute
Specificity = [ 140 / 200 ] × 100
Specificity = 0.7 × 100
Specificity = 70%
Therefore, The specificity of this test is expressed as 70%
Option D) 70% is the correct answer.
∞
∑ (3+na)
n=1
Identify the following series as arithmetic, geometric, both, or neither.
Answer:
I think or maybe if you want me to say this the given series is a geometric one with fert term, -3 and common ratio -1
Step-by-step explanation:
I am so sorry if this is not what you meant I apologize
I need help please :)
HELP ME HELP ME HELP ME
What is the equation of the line that passes through (4, 3) and (-4,-1)?
Answer:
[tex]\implies y = \dfrac{1}{2}x + 1 [/tex]
Step-by-step explanation:
Given :-
Two points (4,3) and (-4,-1)And we need to find out the equation of the line passing through the given two points .So here we can use the two point form of the line as ,
[tex]\implies (y - y_1) = \dfrac{y_2-y_1}{x_2-x_1}(x-x_1) [/tex]
Let us take that ,
[tex](x_1,y_1)=(4,3) [/tex][tex](x_2,y_2)=(-4,-1)[/tex]Now substitute the respective values ,
[tex]\implies (y -3) =\dfrac{3+1}{4+4}(x-4) \\\\\implies y - 3 =\dfrac{4}{8}(x-4) \\\\\implies y -3=\dfrac{1}{2}(x-4) \\\\\implies y -3=\dfrac{1}{2}x - 2 \\\\\implies y = \dfrac{1}{2}x +3-2\\\\\implies y = \dfrac{1}{2}x + 1 [/tex]
Hence the correct option is (2) .
If 4 cups of milk is required to make 20 pancakes, how much milk will 30 pancakes require?
Hope this help!!!!!!! :)
Quantity of flour needed to make 20 pancakes =
Then , number of pancakes that can be made from 1 cup of floor :-
.
Therefore , 12 pancakes can be made from 1 cup of floor .
Solution (b) :-
Number of pancakes that can be made with 1 cup of flour = 12 pancakes
Number of pancakes that can be made with 9 cups of flour :-
= 9 × 12
= 108 pancakes
Therefore , I can make 108 pancakes with 9 cups of flour .
Solution (c) :-
Yes , I have enough flour to make 100 pancakes . I say this because :-
With one cup of flour I can make = 12 pancakes
With 9 cups of flour I can make =
= 9 × 12
= 108 pancakes
As I can make 108 pancakes with 9 cups of flour , I can conclude that I have enough flour to make 100 pancakes .
Step-by-step explanation:
find the center and radius of the circle with equation (x + 9)^2 + (y + 5)^2 = 64
Answer:
Step-by-step explanation:
The standard form of a circle is
[tex](x-h)^2+(y-k)^2=r^2[/tex] with the really important part being the x- and the y-. If our first set of parenthesis is
[tex](x+9)^2[/tex], by the definition of the standard form of a circle, it actually is
[tex](x-(-9))^2[/tex] which is obviously negative (that's the h of the center of the circle);
If our second set of parenthesis is
[tex](y+5)^2[/tex], by the definition of the standard form of a circle, it actually is
[tex](y-(-5))^2[/tex] which is obviously negative (that's the k of the center of the circle). The radius is the square root of the constant on the right, 64. The square root of 64 is 8, so
Center (-9, -5), radius 8
Find the volume of the cylinder
Either enter an exact answer in terms of pie or use 3.14 for pie.
Please help me any help will be appreciated thank you!
Answer:
500π m^3
Step-by-step explanation:
The question is not complete
Cylinders are described with dimensions as
Diameter and Height
Say the diameter is
D= 10m
and Height is
H=20
Hence the radius is
R= D/2= 10/2= 5 m
Therefore the volume is gotten as
V= πr^2h
V= π*5^2* 20
V= π*25*20
V= 500π m^3
Hence the volume is 500π m^3
8 x 10-3 is how many times as great as 4 x 10-6?
Answer: about 2 times greater
Step-by-step explanation:
help plssssss!!!!!!!
HELP Solve: p – 23 = 23 A. p = 24 B. p = 46 C. p = 52 D. p = 44
Answer:
B. p=46
Step-by-step explanation:
46
- 23
23
Answer:
B
Step-by-step explanation:
What is the answer to this 3a-b;a=4b=6
Answer:
3a-b
3×4-6 solve by using the rules of BODMAS
12-6
6(ans)
Hope it helps
Scott and Dan each improved their yards by planting hostas and shrubs. They bought their supplies from the same store. Scott spent $150 on 9 hostas and 12 shrubs. Dan spent $41 on 4 hostas and 3 shrubs. What is the cost of one hosta and the cost of one shrub?
Answer:
shrub = $11
hosta = $2
Step-by-step explanation:
Two equations can be derived from the equation
9h + 12s = 150 equation 1
4h + 3s = 41 equation 2
s = shrubs
h = hostas
this question can be solved using simultaneous equation
Multiply equation 2 by 4
16h + 12s = 164 equation 3
Subtract equation 1 from 3
7h = 14
h = 2
substitute for h in equation 1
9(2) + 12s = 150
12s = 150 - 18
12s = 132
s = 11
pls can u help me with this
Answer:
A = 1.26
B = 1.22
Store B is better
Step-by-step explanation:
5.04 divided by 4
2.44 divided by 2
The total production of 16395 tons of wheat was divided equally and sent to 76 public distribution shops and the remaining was used for midday meals for students on a National Holiday. Find the quantity of wheat used for midday meals? Mention the value you depict from this.
Answer:
55 tons
Step-by-step explanation:
to determine the tons shared among the shops, determine the whole number that would be derived in 16395 were divided by 76. it is 215
multiply 215 by 76 and subtract from 16375
16375 - 16340 = 55
Find all numbers between 200 and 500 which have exactly 9 factors
Answer:
225, 256, 441, 484
Step-by-step explanation:
Only square numbers can have an odd number of factors, e.g. 4: 1, 2, 4
Therefore only square numbers can have 9 factors.
There are only 8 square numbers between 200 and 500: 225, 256, 289, 324, 361, 400, 441, 484.
One way is to list all the factors of each number and you will find that only 225, 256, 441 and 484 have 9 factors.
The other more efficient way is to acknowledge the fact that if a square number (n x n) has 9 factors, n must have only 4 factors. For example, 225 has 9 factors because it is equal to 15 squared and 15 only has 4 factors: 1, 3, 5, 15.
This way, we can find out that 15, 21 and 22 have exactly 9 factors. However, 256 has 9 factors as well as it is equivalent to 2 to the power of 8. This means that it already has 8 factors: 2, 4, 8, 16...,128, 156. However, we must include 1 as a factor which means it has 9 factors in total as well.
Form 2R Coursework #1
Transformations
1. A is the point (-3,5). What are the coordinates of the image of A after a translation of 5
units to the right and 1 unit down?
Answer: 2,4???
Step-by-step explanation:
if the date is 4 january today what was the date a week ago?
Answer:
the date is 4 January today what was the date of week before is
Step-by-step explanation:
the the date is 29 December
Round off 31623 to the nearest ten thousand
Answer:
30,000
Step-by-step explanation:
31623
1 is less than 5 so you dont round up
30,000
-- Gage Millar, Algebra 2 Tutor
What is the rule for reflecting across the x-axis?
(x,y)=(x,-Y)
O (x,y)=(-x,y)
O (x,y)=(-x-7)
O (x,y)=(x,y)