Answer:
Slope: 1
Y-intercept: (0,4)
Step-by-step explanation: I hope that helps!
The regression equation for change in temperature, y, to amount of rain, r, is given by ŷ = 0.2 − 1.4r. On Monday, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees. Find and interpret the residual.
2.66. The regression line overpredicts the temperature change.
2.66. The regression line underpredicts the temperature change.
1.94. The regression line underpredicts the temperature change.
−1.94. The regression line overpredicts the temperature change.
−3.02. The regression line underpredicts the temperature change.
Given:
The regression equation for change in temperature, y, to amount of rain, r, is given by
[tex]\hat{y}=0.2-1.4r[/tex]
The observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.
To find:
The residual and interpret it.
Solution:
According to the question, the observed amount of rain was 0.4 inches and the temperature change was 2.3 degrees.
So, the actual value is 2.3 degrees.
Put r=0.4 in the given equation, to find the predicted value.
[tex]\hat{y}=0.2-1.4(0.4)[/tex]
[tex]\hat{y}=0.2-0.56[/tex]
[tex]\hat{y}=-0.36[/tex]
We know that,
Residual = Actual value - Predicted value
[tex]Residual=2.3-(-0.36)[/tex]
[tex]Residual=2.3+0.36[/tex]
[tex]Residual=2.66[/tex]
Residual is positive because predicated value is less than the actual value.
So, the regression line underpredicts the temperature change.
Therefore, the correct option is B.
If cos O =-2/5 and tan O > 0 what is the value of sin O
Answer:
negative square root 21 over 5.
Step-by-step explanation:
mathGiven that for an angle ,
We are to find the value of
We know that
Cosine is negative in Quadrant II and Quadrant III.
Tangent is positive in Quadrant 1 and Quadrant III.
So, the given angle lies in the Quadrant III.
We will be using the following trigonometric identity:
We have
Since the angle lies in Quadrant III and sine is negative in that quadrant, so
Thus, option (B) is correct.
Joey and Krysta are at the Richmond Fair and are waiting in line to ride on the Ferris Wheel. They are trying to figure how long they will need to wait before they get to the front of the line. The more people in the line ahead of them, the longer they will need to wait.
p = the number of people in line ahead of Joey and Krysta
w = the length of time Joey and Krysta will need to wait
Which variable is the independent variable?
Answer:
P, the number of people in line ahead of Joey and Krysta is the independent variable.
Step-by-step explanation:
Donavon and Joshua are both weight lifting to gain weight. Donavan weighs 120 lbs and he gaining 10 lbs each month and Joshua weighs 150
Ibs and is gaining 4 lbs each month. How many months will it take for Donavan to weigh the same as Joshua?
Answer:
4 months
Step-by-step explanation:
PLEASE HELP WILL GIVE 15 POINTS!!!!
Answer:
130
Step-by-step explanation:
Yall know the rate of change?
Answer:
M=-3
Step-by-step explanation:
Slope:
y2-y1/x2-x1
-3-3/1+1=6/-2=-3
Merritt is driving to Mount Shasta. On her map, she is a distance of 7 inches away. The scale of the map is 2 inches is to 50 miles. How far must Merritt travel to reach her destination?
Answer:
7 inches on the map is 175 miles.
Step-by-step explanation:
2 inches equals 50 miles. Use 50 divided by 2 to find the 1-inch scale which is 1:25 ( one inch to 25 miles)
Which line on the graph below has an undefined slope?
○ P
○ Q
○ R
○ S
Answer:
R
Step-by-step explanation:
Answer:
R
Step-by-step explanation:
Peter, Henry & Angad share some money in the ratio 1 : 5 : 4.
In total, Peter and Angad receive £75.
How much does Henry get?
Answer:
75
Step-by-step explanation:
1+4=5
75=75
What is the product of twenty hundredths and sixty-five thousandths
Answer:
0.013
Step-by-step explanation:
The product of twenty hundredths and sixty-five thousandths is 0.013.
Given that, the product of twenty hundredths and sixty-five thousandths.
What is the product of two fractions?The product of two fractions is the product of the numerators and the product of the denominators.
Product of two fractions = Product of their denominators / Product of their numerators.
Twenty hundredths = 20/100
Sixty-five thousandths = 65/1000
Product = 20/100 × 65/1000
= 2/10 × 65/1000
= 130/10000
= 13/1000
= 0.013
Therefore, the product of twenty hundredths and sixty-five thousandths is 0.013.
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i need help with some unanswerd Qs on my profile
Answer:
I will help
Step-by-step explanation:
Answer:
i can help you
Step-by-step explanation:
what do you need done
What is the slope of the graph?
On god I will mark you as brainliest
Lin runs 5 laps around a track in 4 minutes. How many minutes per lap is that?
Answer:
1.25 minutes per lap
Step-by-step explanation:
WILL GIVE BRAINLIEST
Which of the following is the function rule for the graph of the sin function from 0 to 2pi if the amplitude is 1.5 and the period is (pi/2)?
A. 1.5sin(pi /4)x
B. 1.5sin2x
C. 1.5sin4x
please help fast, will give brainliest
Answer:
1.5sin4x
Step-by-step explanation:
I just answered this question and got it right.
The function is 1.5sin(4x).
What is sin function?The ratio of the length of the opposite side to that of the hypotenuse in a right-angled triangle is the sine function in trigonometry. A right triangle's sides or unknown angles can be found using the sine function.
Given the sine function from (0, 2π), and amplitude is 1.5, the period is π/2
sine function in general form
y = a sin (b (x – h)) + d
where a = amplitude, b= period
h is the phase shift, and
d is the vertical displacement.
according to question, This function currently has no phase shift, since
h = 0, and no vertical displacement, since d = 0
equation is y = a sin b x
and b is ratio of normal period to desired period
b = 2π/(π/2)
b = 4
substitute the value of a and b in equation we get,
y = 1.5 sin (4x)
Hence the sin function from 0 to 2pi is y = 1.5 sin (4x).
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Rachel packed supplies for the sixth grade picnic. For every 11 forks she packed, she packed 8 spoons. Rachel packed a total of 110 forks. How many spoons did she pack?
Answer:
80
Step-by-step explanation:
The ratio is 11:8 multiply it by 10 it turns into 110:80
Answer:
80
Step-by-step explanation:
because that's the answer
HELPP! I need an explanation an answer quicck
Answer:
C. -1,-2
Step-by-step explanation:
What is the domain and range of the equation y = 6/(x+2) + 4?
Answers:
Real numbers except x = -2 and Real numbers except y = 6
Real numbers except x = 2 and Real numbers except y = 4
Real numbers except x = -2 and Real numbers except y = 4
Answer:
.2 sdfgghh 45
Step-by-step explanation:
Pentagon JKLMN is similar to pentagon UVWXY.
What is the length of WX?
18
15
10
N
(not drawn to scale)
A 15
13
12
O 18
9514 1404 393
Answer:
C. 12
Step-by-step explanation:
Corresponding sides are proportional. Sides with the same mark are the same length.
WX/XY = LM/MN = LM/KJ
WX/10 = 18/15
WX = 180/15 . . . . multiply by 10
WX = 12
The Jones family was one of the first to come to the US. They had 5 children. Assuming that the probability of a child being a girl is .5, find the probability that the Jones family had:
a)at least 2 girls
b)at most 4 girls
Nathan rolls a number cube and records the result of each roll in the table.
Number Cube
Number Rolled
Frequency
1
11
2
16
3
14
4
20
5
12
6
17
Which statements below represent the situation? Selet three options.
The relative frequency of rolling a 4 is StartFraction 2 over 9 EndFraction.
The experimental probability of rolling a 3 is greater than the theoretical probability of rolling a 3.
The experimental probability of rolling a 2 is greater than the theoretical probability of rolling a 2.
The relative frequency of rolling a 5 is StartFraction 2 over 13 EndFraction.
The experimental probability of rolling a 1 is less than the experimental probability of rolling a 6.
The relative frequency of rolling a 4 will be 2/9. Then the correct option is A.
How to find the relative frequency?Relative frequency is the ratio of the considered subgroup's count to the total count.
Nathan rolls a number cube and records the result of each roll in the table.
Number Rolled Frequency
1 11
2 16
3 14
4 20
5 12
6 17
Total = 90
Then the relative frequency of rolling a 4 will be
P = 20 / 90
P = 2/9
Then the correct option is A.
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Answer:
its A, C, D
Step-by-step explanation:
tested for really
Simplify the expression: 6/3(13−18)+2^4÷6
Answer:
-7.333
Step-by-step explanation:
Answer:
-7 1/3
Step-by-step explanation:
a number is 2/3 of another number. if the sum of the two numbers is 30, find the smaller number.
Answer: The numbers are 4 and 6.
Step-by-step explanation:
Let one number be represented as
x
and the other as
y
.
According to the problem:
x
=
2
3
y
and
x
+
y
=
10
From the second equation we get:
x
+
y
=
10
∴
y
=
10
−
x
(subtracting
x
from both sides)
Replacing the value of
y
in the first equation we get:
x
=
2
3
y
x
=
2
3
(
10
−
x
)
Multiplying both sides by
3
we get:
3
x
=
2
(
10
−
x
)
Opening the brackets and simplifying we get:
3
x
=
20
−
2
x
Add
2
x
to both sides.
5
x
=
20
Divide both sides by
5
.
x
=
4
Since from the second equation we have:
x
+
y
=
10
substituting
x
with
4
we get:
4
+
y
=
10
Subtract
4
from both sides.
y
=
6
Answer: The smaller number is 12.
Step-by-step explanation:
Just took the test
If u answer correctly I will give brailiest
For any number n>1, is
|([frac{7}{25} + frac{24}{25}i)^n|
A) Greater than 1
B) Less than 1
C) Equal to 1
Answer:
$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad\ frac{a}{c}\pm\frac{b}{c}=\frac{a\pm\:b}{c}$ Since the denominators are equal ...
Step-by-step explanation:
Addition and subtraction of complex numbers works in a similar way to ... Example 1- Addition & Subtraction. a. ... (6+3)+(7−5)j=9+2j ... 25 + 30j + 9(-1)` ... our final answer is real only (it does not contain any imaginary terms. ... above - we multiply top and bottom of the fraction by the conjugate of the bottom.
.Damian wrote the number five and thirty-eight thousandths as 5.38. Was he correct or not? if so, what was the error
Answer:
he is incorrect.
Step-by-step explanation:
It would be 5 and 38 HUNDRETHS because the first number after the decimal is the tenths.
2x + 8 = 2(x + 4)
(Variables Vanish)
show stepss! due in 5 min!<3
Answer:
0
Step-by-step explanation:
2x+8=2(x+4)
2x+8=2x +8
2x-2x=8-8
0=0
Find the slope of the line. Enter your answer as
a number, fraction, or undefined. Reduce to
lowest terms if necessary.
Answer:
slope is 2/4 or 1/2 simplified
Step-by-step explanation:
Answer: 1/2
Step-by-step explanation:
Simplify 12x-24 into simplest form
Maya's final score is 298.Which dancer has the greater final score?
Answer:
the question
Step-by-step explanation:
because it litterly has dancer and in the question it has the greater final score.
if you give me the correct answer i will give you brainliest
Answer:
no
Step-by-step explanation: