What is an equation of the line that passes through the points (7,4) and (-5,4)
Answer:
y=4
Step-by-step explanation:
please help me answer this question
ASAP!! Which graphs have same domain?
Graphs 1 and 2
Graphs 1 and 3
Graphs 2 and 3
Graphs 1, 2, and 3
Answer:
B
Step-by-step explanation:
Jorge was studying average life expectancy in Europe and how it varies across different countries. He wanted to discover what variables were good predictors of life expectancy and identified 3 that he believed could possibly be good predictors:
employment rate,
access to healthcare, and
number of car accidents per year.
He conducted a multiple linear regression analysis using these variables.
When looking over the results of this analysis, he saw
that the scatterplot did not show a linear pattern between each of the explanatory variables and the response variable.
that there was not a funnel shape to the residual vs. predicted plot. that the histogram of the normal quantile plot was fairly normal.
Based on all of these findings,
he can say that the linearity condition _________
the equal variance condition ________
the normality condition _____________
the 10% condition ____________
and the success failure condition __________
Options for each:
A) is not met
B) does not need to be checked for multiple linear regression
C) is met
Answer:
Is not met ( A )Is not met ( A ) Does not need to be checked for multiple linear regression ( B )Does not need to be checked for multiple linear regression ( B )Step-by-step explanation:
Linearity condition is : NOT MET
The equal variance condition is : NOT MET
The 10% condition : Does not need to be checked for multiple linear regression
The success failure condition : Does not need to be checked for multiple linear regression
Find the product: (0.45)•(0.008)
0.45x0.008=0.0036
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hope it helps
Can I get help with this question?
Answer:
h well jskkkskwlejsjnekekwpwkqiwjeuehwiwnwoqmwlkwkwke just trying to get pinots. sorry
Haley did 8/12 of her math homework over the weekend. she completed 3/12 of the homework on Saturday. what fraction of the homework did she complete on Sunday? how much more does she have left to finish?
Answer:
Haley completed 11/12 and has yet to finish 1/12 of her homework.
Step-by-step explanation:
[tex]\frac{8}{12} + \frac{3}{12} = \frac{8 + 3}{12} = \frac{11}{12}[/tex]
Haley completed 11/12 of her homework. To find how much she has left is simple subtraction:
[tex]\frac{12}{12} - \frac{11}{12} = \frac{1}{12}[/tex]
So Haley has 1/12 of her homework left to complete.
A fish is swimming at a constant rate toward the ocean floor. The equation
y = -7x -3 can be used to represent this situation, where y is the depth of the fish in meters below sea level and x is the number of seconds the fish has been swimming.
Which statement best describes the depth of this fish, given this equation? (DOK 3)
A
From a starting position of 3 meters below sea level, the fish is going down( descending) 7 meters per second
B
From a starting position of 7 meters below sea level, the fish is ascending 3 meters per second
C
From a starting position of 7 meters below sea level, the fish is descending 3 meters per second
D
From a starting position of 3 meters below sea level, the fish is ascending 7 meters per second
Answer:
A
Step-by-step explanation: the -7x represents the 7 meters the fish is going down every second and the -3 would be the fish starting at 3 meter below sea level
What is the equation ( y = mx + b) of the line that passes through (2,5) and (6, 13)
Answer:
y=2x+1
Step-by-step explanation:
y=mx+b
m=(13-5)/(6-2)
m=8/4
m=2
b=y-mx
b=5-2*2
b=5-4
b=1
y=2x+1
Answer:
y=2x+1
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(13-5)/(6-2)
m=8/4
m=2
y-y1=m(x-x1)
y-5=2(x-2)
y-5=2x-4
y=2x-4+5
y=2x+1
If 3 out of every 5 dentist recommend sugarless gum to their patients who chew gum, how many would recommend sugarless gum if 100 dentist were polled
A)80
B)85
C)75
D)60
Answer: d 60 I think
Step-by-step explanation:
Am I doing this right?
Answer:
Yes you are
You very much are doing the right thing
1. What value of x make the following true? 2x + 2x + 2x + 2x = 96
please help me i really need help please
Answer:i know the x for 1 not for the other 2
Step-by-step explanation:1 is 4
Answer:
17) x= 36
18)
Step-by-step explanation:
17) 2x + 2x + x =180°(angles of a triangle)
5x = 180°
divide both sides by 5
X = 36
18) 7x +3x + 90° = 180°(angles of a triangle)
10x = 90
X = 9
19) 2x + x + x = 180° (angles of a triangle)
4x = 180°
X = 45
hope it helps
This net folds into a cube. Which two letters appear on opposite faces?
Answer:
Three answers B and D, A and C, F and E
I'm not very sure how to explain this.
To assess the effectiveness of a kindergarten-readiness program, 15 children from a random sample were each given a diagnostic assessment before beginning the program and a follow-up assessment after completing the program. For each child, the difference in the score points between the two assessments was calculated and used to create the 95 percent confidence interval (20.1,23.9)(20.1,23.9).
Assuming all conditions for inference are met, which of the following is a correct interpretation of the interval?
A) For all children in the program, 95 percent of the children will have a mean difference in scores of between 20.1 points and 23.9 points.
B) There is a 0.95 probability that the mean difference in scores for all children in the sample is between 20.1 points and 23.9 points.
C) There is a 0.95 probability that the mean difference in scores for the children in the program is between 20.1 points and 23.9 points.
D) We are 95 percent confident that the mean difference in scores for all children in the program is between 20.1 points and 23.9 points.
E) We are 95 percent confident that the mean difference in scores for the children in the sample is between 20.1 points and 23.9 points.
Answer:
D) We are 95 percent confident that the mean difference in scores for all children in the program is between 20.1 points and 23.9 points.
Step-by-step explanation:
x% confidence interval:
A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.
95 percent confidence interval (20.1,23.9)
We are 95% sure that the population mean(that is, the mean for all children in the program) is in this interval. So the correct answer is given by option D.
4x²y+2xy² simplefid in algebra
Answer:
Difficulties regarding the emotions of your body.
Step-by-step explanation:
Difficulties regarding the emotions of your body.
whats 60 + 9........
Answer:
Its 69 just use your fingers
Step-by-step explanation:
Find the area of the triangle below.
Be sure to include the correct unit in your answer.
Answer:
Area= 1/2bh
= 1/2 ( 16)(6)
=48 square yard.
What is the surface are of the box in square meters that Elizabeth decorates
Answer:
Step-by-step explanation:
A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviation of 4.2 years. The distribution of life spans for electric ovens has a mean of 13.4 years and a standard deviation of 3.7 years. Both distributions are moderately skewed to the right. Suppose we take a simple random sample of 35 gas ovens and a second simple random sample of 40 electric ovens. Suppose we take a simple random sample of 35 gas ovens and a second SRS of 40 electric ovens. Which of the following best describes the sampling distribution of barXG - bar XE, the difference in mean life span of gas and electric ovens?
A. Mean = 1.6 years, standard deviation = 7.9 years, shape: moderately right-skewed.
B. Mean = 1.6 years, standard deviation = 0.92 years, shape: approximately Normal.
C. Mean = 1.6 years, standard deviation = 0.92 years, shape: moderately right skewed.
D. Mean = 1.6 years, standard deviation = 0.40 years, shape: approximately Normal.
E. Mean = 1.6 years, standard deviation = 0.40 years, shape: moderately right skewed.
Answer:
B. Mean = 1.6 years, standard deviation = 0.92 years, shape: approximately Normal.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Subtraction of normal variables:
When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.
35 gas ovens
A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviation of 4.2 years. This means that:
[tex]\mu_G = 15, \sigma_G = 4.2, n = 35, s_G = \frac{4.2}{\sqrt{35}} = 0.71[/tex]
40 electric ovens.
The distribution of life spans for electric ovens has a mean of 13.4 years and a standard deviation of 3.7 years.
[tex]\mu_E = 13.4, \sigma_E = 3.7, n = 40, s_E = \frac{3.7}{\sqrt{40}} = 0.585[/tex]
Which of the following best describes the sampling distribution of barXG - bar XE, the difference in mean life span of gas and electric ovens?
By the Central Limit Theorem, the shape is approximately normal.
Mean: [tex]\mu = \mu_G - \mu_E = 15 - 13.4 = 1.6[/tex]
Standard deviation:
[tex]s = \sqrt{s_G^2+s_E^2} = \sqrt{(0.71)^2+(0.585)^2} = 0.92[/tex]
So the correct answer is given by option b.
Which fraction in simplest from is equivalent to 4/6?
A. 1/3
B. 1/4
C. 2/3
D. 1/3
Answer:
C. 2/3
Step-by-step explanation:
To simplify 4/6 we need to divide 4 by 2 and 6 by 2.
A bicycle tire of radius 0.40 m and mass 1.7kg is rotating at 62.9 rad/s.
What torque is necessary to stop the tire in 2.2 s?
Answer in units of N · m.
These are the last of my points, I have been scammed by people twice, someone please help me, this is actually physics but the scammers love physics.
Find the value of x on a kite
Answer:
When we combine like terms we get 158 plus 2x equals 360 subtract 158 from both sides. And we get 2x...
Step-by-step explanation:
Anyone know how to answer? need help asap
Houa has an action figure collection. She keeps some in a display case and the rest on
the wall. 82 of her action figures are on the wall, and 59% of her action figures are in the display case. What is the total number of action figures in Houa's collection?
Answer:
200 action figures
Step-by-step explanation:
Given
[tex]Wall = 82[/tex]
[tex]Display\ Case = 59\%[/tex]
Required
Total action films
If 59% is on a display case, then 4!% is on the wall. Let the total be x.
So, we have:
[tex]Wall = 41\% * x[/tex]
Substitute 82 for Wall
[tex]82= 41\% * x[/tex]
[tex]82= 0.41 * x[/tex]
[tex]200= x[/tex]
[tex]x = 200[/tex]
NOT MULTIPLE CHOICE!
Answer:
Answer is C hope this helps
Step-by-step explanation:
Find the value of X and Y
Answer: x=2 y=152
Step-by-step explanation:
9x + 10 = 15x - 2 They are corresponding angles.
9x = 15x - 12 [Subtract 10 from the both side]
-6x = -12 [Subtract 15x from both side]
x = 2 [Divide -6 from both side]
(9x + 10) + y = 180
[9(2) + 10] + y = 180
28 + y = 180
y = 152
Find a.
Round to the nearest tenth:
27 cm
102°
28°
a = [? ]cm
have you got this yet ??
Answer:
44.1
Step-by-step explanation:
How many 1/5 are in 20? Enter your answer in the bo
Answer:
4
Step-by-step explanation:
20 devided by 1/5 is 4
what is the difference in length between the longest meteor and the shortest meteor
Answer:
Please show the full problem
Step-by-step explanation:
Answer:
If this is the same question the answer is 3 1/3
Step-by-step explanation: