Answers
Answer:
D. 2
Step-by-step explanation:
(1 - -5)/(4 - 1) = 6/3 = 2
Answer: 2
Step-by-step explanation:
The slope of a line through two points (x₁, y₁) and (x₂, y₂) is given by (y₂ - y₁)/(x₂ - x₁). In this case, x₁ = 1, y₁ = -5, x₂ = 4, and y₂ = 1. So the slope is:
(1 - (-5))/(4 - 1) = 6/3 = 2
Related Questions
What is 3,000 is 1/10 of
Answers
Answer:
30000
Step-by-step explanation:
3000 / (1/10) = w
3000*10/1 = w
30000 = w
probe:
30000*1/10 = 3000
then:
30000
is 1/10
of
30000
Suppose a horticulturist measures the aboveground height growth rate of four different ornamental shrub species grown in a greenhouse. The shrubs were grown from a random sample of seeds, and they were all grown in the same soil mixture and in the same size pot. To ensure that any slight differences in the environmental conditions throughout the greenhouse are not confounded with species, she randomizes the location of the pots throughout the greenhouse. The table contains a summary of her data. Population Sample Sample Sample Population description size standard deviation 17.153 cm/year 2.666 cm/year x2 = 13.983 cm/year s2-3.605 cm/year 15.120 cm/year3 3.774 cm/year x4-14.328 cm/year s.-3.011cm/year mean 1 Species 1 n1-20 Species 2 n2=20 3 Species 3 n 20 Species 4 n4-20 The growth rate distributions of each sample are approximately normal, and the data do not contain outliers. The horticulturist uses a one-way analysis of variance (ANOVA) at a significance level of a 0.05 to test if the mean growth rates of all four species are equal. Her results are shown in the table. Source of variation Between groups Within groups Total ss MS p-valuef-critical 120.988 3 40.329 3.7160.0152.725 824.710 76 10851 945.697 79Complete the sentence to state the decision and conclusion of horticulturist test.The decision is to ________the ___________at a significant level of________ α=0.05 There is _______ evidence to conclude that __________ is__________.
Answers
Complete Question
The complete question is shown on the first uploaded image
Answer:
The decision is to reject the null hypothesis at a significant level of significance [tex]\alpha = 0.05[/tex] There is sufficient evidence to conclude that at least one of the population mean is different from at least of the population
Step-by-step explanation:
From the question we are told that the claim is
The mean growth rates of all four species are equal.
The null hypothesis is
[tex]H_o : \mu _1 = \mu_2 = \mu_3 = \mu_4[/tex]
Th alternative hypothesis is
[tex]H_a: at \ least \ one \ of \ the \ means \ is \not\ equal[/tex]
From question the p-value is [tex]p-value = 0.015[/tex]
And since the [tex]p-value < \alpha[/tex] so the null hypothesis will be rejected
So
The decision is to reject the null hypothesis at a significant level of significance [tex]\alpha = 0.05[/tex] There is sufficient evidence to conclude that at least one of the population mean is different from at least of the population
Please help ill give brainlest
Answers
Answer & Step-by-step explanation:
For this problem, we have to find the equations that have a value of 10 for the variable y. Immediately, we can eliminate some answers. We can eliminate A, D, and E because they all have a different value for the variable y. So, that leaves us with answer choices B and C.
In order to check to see if we are correct, let's plug in 10 for the y in answer choices B and C.
B:
8 = 18 - y
8 = 18 - 10
8 = 8
C:
60 = 6y
60 = 6(10)
60 = 60
So, as you can see, we are correct and we have successfully found the correct answer to the given problem.
Answer:
B and C
Step-by-step explanation:
We want to find the equations where y=10 is a solution. Let's plug 10 into each equation and solve.
A. y+11=22
10 +11 =22
Add 10 and 11.
21 ≠ 22
21 does not equal 22. This choice is incorrect.
B. 8= 18-y
8=18-10
Subtract 10 from 18.
8=8
8 equals 8. This choice is correct.
C. 60=6y
60=6(10)
Multiply 6 and 10.
60=60
60 equals 60. This choice is correct.
D. y/5=4
10/5=4
Divide 10 by 5.
2≠4
2 does not equal 4. This choice is incorrect.
E. 10y=20
10(10)=20
Multiply 10 and 10.
100≠20
100 does not equal 20. This choice is incorrect.
The equations where y=10 is a solution are B. 8=18-y and C. 60=6y
If 4x— 3 = 2x + 9, then x = ?
x=6
x=2
x=1
x=3
Answers
Answer:
x=6 is the answer
Step-by-step explanation:
4x-3=2x+9
adding 3 on both sides
4x-3+3=2x+9+3
4x=2x+12
subtracting 2x on both sides
4x-2x=2x-2x+12
2x=12
dividing 2 on both sides
2x/2=12/2
x=6 is the answer.
hope it will help you :)
Step-by-step explanation:
4x - 3 = 2x + 9
Bringing like terms on one side
4x - 2x = 9 + 3
2x = 12
x = 12/ 2
x = 6
Using the number 98,045,132.706
(a) The digit 8 is in the
place.
(b) The digit 3 is in the
place.
Answers
Answer:
A. The digit 8 is in the place one million position
B. The digit 3 is in the place tens position
Step-by-step explanation:
Given:
98,045,132.706
9 is in the ten million position
8 is in the one million position
0 is in the hundred-thousand position
4 is in the ten-thousand position
5 is in the one-thousand position
1 is in the hundred position
3 is in the tens position
2 is in the one position
. Decimal
7 is in the tenth position
0 is in the hundredth position
6 is in the thousandth position
Therefore,
A. The digit 8 is in the place one million position
B. The digit 3 is in the place tens position
An accident investigator measured the skid marks of one of the vehicles involved in an accident. The length of the skid marks, d, was 117ft. Use the formula s=24d−−−√ to find s, the speed of the vehicle before the brakes were applied. Round your answer to the nearest tenth.
Answers
Answer:
The speed is 2808 ft/sStep-by-step explanation:
step one:
In this problem we are expected to substitute the value of d in the expression for velocity given as
[tex]s=24d[/tex]
step two:
Given that
d= 117 ft
Substituting the value for d in the given equation we have
[tex]s= 24*117\\\\s=2808 ft/s[/tex]
The problem basically tests our ability to perform basic substitution operation which we have performed, should you have any question or doubt, kindly respond to this question
Answer:
53
Step-by-step explanation:
Someone, please help me with this.
Answers
Answer:
14
Step-by-step explanation:
7x-1+6x-1=180
13x-2=180
13x=180+2
13x=182
x=14
I NEED HELP PLEASE
name each angle in as many different ways as possible
Answers
========================================
Explanation:
To name an angle, we list 3 points on the angle such that the middle point is the vertex of the angle. The vertex is where the two rays are joined (at the endpoints).
So we could say "angle JLG" as you wrote in the first box, or we could say "angle GLJ". This is the same because L is in the middle each time. So the order doesn't matter as long as L is in the middle.
The third way to name this angle is to say "angle 2" or [tex]\angle 2[/tex] for short.
Another way to write this angle is to name it by the vertex point alone.
----------------------
Note: In this case, saying "angle L" is enough info to be able to pinpoint the proper angle. Though in general this naming convention is very limited. If we had other rays attached to point L (say ray LH where point H is not on any of the two rays shown), then writing "angle L" is ambiguous. So keep this in mind.
Keith has 39 books in his library. He bought several books at a yard sale over the weekend. He now has 84 books in his library. How many books did he buy at the yard sale ?
Answers
Answer:
total books in library = 39
books bought from yard sale = ??
Total book in library now = 84
Now,
books bought from yard sale= 39-84
= 45
7 1/8 + 1/6, reduced to lowest terms
Answers
Answer:
Step-by-step explanation:
7 3/24 + 4/24
7 7/24
Simplify the expression:
(10x2 -1 + 4x) + (3 + 5x2 - 4x)
Answers
Answer:
[tex] \boxed{\sf 15x^2 + 2} [/tex]
Step-by-step explanation:
Simplify the expression:
[tex] \sf \implies(10 {x}^{2} - 1 + 4x) + (3 + 5 {x}^{2} - 4x)[/tex]
Grouping like terms, 10x² + 5x² + 4 x - 4 x - 1 + 3 = (10 x² + 5x²) + (4 x - 4 x) + (-1 + 3):
[tex] \sf \implies (10 x^2 + 5 x^2) + (4 x - 4 x) + (-1 + 3)[/tex]
10x² + 5x² = 15x²:
[tex] \sf \implies 15 x^2 + (4 x - 4 x) + (-1 + 3)[/tex]
3 - 1 = 2:
[tex] \sf \implies 15 x^2 + (4 x - 4 x) + 2[/tex]
4 x - 4 x = 0:
[tex] \sf \implies 15 x^2 + 2[/tex]
what is the greatest common factor of 60 , 8
Answers
Answer:
4
Step-by-step explanation:
The factors of 8 are 1, 2, 4, and 8.
60 is not divisible by 8, but it is divisible by 4: 4 * 15 = 60. So the GCF of 60 and 8 is 4.
Y=x-1 4x+8=y solve the system
Answers
metric conversions, which is bigger
Answers
Answer: 6 m is greater
Step-by-step explanation:
Cm is less than m
Hope it helps
Answer:
25. <
26. <
27. >
28. <
29. <
30. >
Hope it helps!
lovelymoonlight ✨
000KS
c. Sumana runs a tea shop and she buys 7.5L of milk everyday. If she
uses 4.75L of milk in the morning and the remaining milk in the
evening. Find the quantity of milk she uses in the evening
Answers
Answer:
2.75 L
Step-by-step explanation:
This is the problem of subtraction.
Total Milk sumana has = 7.5 l
Milk used in the morning = 4.75 L
Milk left for evening = Total Milk sumana has - Milk used in the morning
Milk left for evening = 7.5 l - 4.75 l = 2.75 L
A box contains 12 balls: 8 red and 4 black. Two extractions are made without replacing the extracted ball to the box before the second extraction. Do you find the probability of drawing a ball of each color?
Answers
Answer:
16/33
Step-by-step explanation:
The probability that the first ball is red and the second ball is black is:
8/12 × 4/11 = 8/33
The probability that the first ball is black and the second ball is red is:
4/12 × 8/11 = 8/33
So the total probability of drawing one ball of each color is 8/33 + 8/33 = 16/33.
Is the a discrete random variable, a continuous random variable, or not a random variable? response to the survey question "Did you smoke in the last week?" A. It is a discrete random variable. B. It is a continuous random variable. C. It is not a random variable.
Answers
Answer:
The correct answer is:
It is a discrete random variable. (A)
Step-by-step explanation:
Discrete Random Variables are variables that have distinct values. The number of variables that can be taken on can be counted. in this example, the variables to the question Did you smoke in the last week? is one of two possibilities; yes or no. Apart from these two values, there is no other possibility for the variables, hence it is a discrete random variable
Continuous Random Variables are values that can take on any value between distinct values, even up to infinity. The number of values that the variables can take on cannot be counted or listed. For example, is there are variables for the possible temperature that a particular city can take on in a day, the values are continuous random variables because the values do not have any distinct value, and the possibilities cannot be counted. the possibilities can be; anywhere between 20°C to 50°C. between these two, temperatures, you can have infinite possibilities; 20.1, 30.5, 40.8, etc. Hence the values cannot be counted, it is thus a continuous random variable.
Answer:
c not random variable
Step-by-step explanation:
graph the inequality 7< y -3x < 11
Answers
Answer:
X=5 Y=-4
Step-by-step explanation:
please help me /:
Given the table of values below, which of the following ordered pairs are
found on the graph of the inverse function?
Answers
Answer:
see below
Step-by-step explanation:
The ordered pairs of the inverse function are the reverse of the ordered pairs of the function.
You are given the function has ordered pairs (-3, -2), (3, -1) and so on. The inverse function will have ordered pairs (-2, -3), (-1, 3), and so on. This matches choice A.
If lim f (x) x →5 = 2 and lim g (x) x → 5= -6 which of these limits exist?
Answers
Answer:
E
Step-by-step explanation:
So we already know that:
[tex]\lim_{x \to 5} f(x)=2 \text{ and } \lim_{x \to 5} g(x)=-6[/tex]
So, go through each of the choices and see which ones are correct.
I)
We have:
[tex]\lim_{x \to 5} (f(x)+g(x))[/tex]
This is the same as saying:
[tex]\lim_{x \to 5} f(x)+ \lim_{x \to 5} g(x)[/tex]
And since we already know the values:
[tex]=(2)+(-6)\\=-4[/tex]
So, the limit does indeed exist.
II)
We have:
[tex]\lim_{x \to 5} \frac{f(x)}{g(x)+6}[/tex]
This is the same as:
[tex]\frac{ \lim_{x \to 5} f(x)}{ \lim_{x \to 5} g(x)+ \lim_{x \to 5} 6 }[/tex]
The bottom right one is just 6. Simplify:
[tex]\frac{ \lim_{x \to 5} f(x)}{ \lim_{x \to 5} g(x)+6}[/tex]
Substitute the values we know:
[tex]=\frac{(2)}{(-6)+6} \\=2/0[/tex]
This is a value over zero. Unlike the indeterminate form 0/0, this limit does not exist.
III)
We have:
[tex]\lim_{x \to 5} \frac{f(x)-2}{g(x)}[/tex]
Again, this is the same as:
[tex]\frac{ (\lim_{x \to 5} f(x))-2}{ \lim_{x \to 5} g(x)}[/tex]
Substitute in the values we know:
[tex]=\frac{(2)-2}{(-6)}\\ =0/-6=0[/tex]
The limit does exist and it is 0.
So, the limits of only I and III exist.
The correct answer is E.
For a confidence level of 85%, find the critical value for a normally distributed variable. The sample mean is normally distributed if the population standard deviation is known.
Answers
Answer:
The value is [tex]Z_{\alpha } = 1.439[/tex]
Step-by-step explanation:
From the question we are told that
The confidence level is C = 85%
Generally the level of significance is mathematically represented as
[tex]\alpha = (100 - 85 )\%[/tex]
[tex]\alpha = 0.15[/tex]
Now from the normal distribution table the critical value of [tex]\alpha[/tex] is
[tex]Z_{\alpha } = 1.439[/tex]
What is 8 3/5 graphed on a number line
PLZ I NEED HELP ASAP CUZ IM ON A TIMER!
Answers
Answer:
Step-by-step explanation:
8 3/5 on a number line is between 8 and nine
idk how to draw a number line on a computer so ill just tell you how
1. divided the spaces between 8 and 9 into 5 sections ( 3/5 )
2. then mark 3 of those 5 spaces and put a dot or a line at where the 3rd space ends
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Answers
Answer:
change f(x) to y, switch x and y, and solve for y
y = √(x -4)
x = √(y - 4)
x² = y - 4
x² + 4 = y
y = x² + 4
f⁽⁻¹⁾ = x² + 4, where x ≥ 4
Which number produces ab irrational number when multipled by 4
Answers
Answer:
Step-by-step explanation:
Hello, any irrational number multiplied by 4 is an irrational number.
For instance, you can take
[tex]\boxed{\sqrt{2}}[/tex]
Thank you
What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3?
Answers
Answer:
y = 9
Step-by-step explanation:
So if x = 3, we can sub that into the equation.
This gives us:
6.4 (* 3) + 2.8y = 44.4
so:
19.2 + 2.8y = 44.4
25.2 = 2.8y
so
y = 9
Answer: 9
Step-by-step explanation: plug 3 into the x, then use the order of operations/ pemdas to solve. first multiply 6.4 and 3 (=19.2) then subtract the answer from 44.4 (now the equation is 2.8y=25.2) then divide 2.8 from 25.2 to get x alone and you are left with x=9
h E l P HELP
(you don’t gotta show your work by the way)
Answers
Answer/Step-by-step explanation:
1. Converting 16 in to cm:
1 in = 2.54 cm
16 in = 16*2.54 = 40.64 cm
2. Converting 345lbs to kg:
1 lbs = 0.4536 kg
345 lbs = 345*0.4536 = 156.492 ≈ 156.49 kg(nearest hundredth)
3. Converting 56 g to oz:
1 g = 0.0353 oz
56 g = 56*0.0353 = 1.9768 ≈ 1.98 oz (nearest hundredth)
4. Converting 450 km to mi:
1 km = 0.6214 mi
450 km = 450*0.6214 = 279.63 mi
5. Converting 1200 ml to fl oz
1 ml = 0.0338 fl oz
1200 ml = 1200*0.0338 = 40.56 fl oz
6. Converting 40 m to ft:
1 m = 3.2808 ft
40 m = 40*3.2808 = 131.23 ft (nearest hundredth)
7. Converting 4 gal to l:
1 gal = 3.785 l
4 gal = 4*3.785 = 15.14 l
8. Converting 12 fl oz to ml:
1 fl oz = 29.575 ml
12 fl oz = 12*29.575 = 354.9 ml
9. Converting 50kg to lbs:
1 kg = 2.2046 lbs
50kg = 50*2.2046 = 110.23 lbs
simplify 3×+1(2×-1)2-1(6×)
Answers
●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●
Hi my lil bunny!
❧⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯☙
Answer = [tex]\boxed {x - 2}[/tex]
[tex]3x +1(2x-1)2-1(6x)[/tex]
= [tex]\boxed {3x + 1 . ( 2x - 1 ) . 2 - 1 (6x) = x - 2}[/tex]
Steps :
[tex]3x + 1 . (2x - 1) . 2 - 1 . (6x)[/tex]
Remove the parentheses : [tex](a) = a[/tex]
[tex]= 3x + 1 * (2x- 1) * 2 - 1 * 6x[/tex]
Multiply the numbers : [tex]1 * 2 = 2[/tex]
[tex]= 3x + 2 ( 2x - 1 ) * 6x[/tex]
Multiply the numbers : [tex]1 * 6 = 6[/tex]
[tex]= 3x + 2 ( 2x - 1 ) -6x[/tex]
Expand: [tex]2 (2x - 1) : 4x - 2[/tex]
[tex]2 ( 2x - 1 )[/tex]
Apply the distributive law : [tex]a (b - c) = ab - ac[/tex]
[tex]a = 2, b = 2x, c = 1 \\= 2 * 2x - 2 * 1[/tex]
Simplify [tex]2 * 2x - 2 * 1 : 4x - 2[/tex]
= [tex]= 4x - 2[/tex]
[tex]= 3x + 4x - 2 - 6x[/tex]
Simplify [tex]3x + 4x - 2 - 6x : x - 2[/tex]
= [tex]x - 2[/tex]
❧⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯☙
●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●
Have a great day/night!
❀*May*❀
how many terms are in the exspression 4{8+3x]
Answers
2 terms
Step-by-step explanation:
4[8+2x]
=4*8+4*2x
=32+8x
therefore there are 2 terms
hope it helps u if yes pls mark brainliest
Answer:
The first factor (4) consists of one (1) term, "4".
The second factor (8 +3x) consists of two (2) terms, "8" and "3x".
A 92-ft tree casts a shadow that is 120 ft long. What is the angle of elevation of the sun?
Answers
Answer:
The angle of elevation of the sun is 38°
Step-by-step explanation:
We can set up the diagram for the the question by interpreting it, you can check the diagram at the attached file.
We can see that after the interpretation of the question we arrived at a triangle,. Where the vertical side represent the 92-ft. which is the height of the tree and the horizontal side represent the 120 ft. which is the shadow's lenght. Then the angle of elevation of the sun can ba calculated using tangent ratio, from our knowledge of trigonometry
Tan(θ )= opposite/adjacent
Where our opposite =92ft
Adjacent= 120ft
Tan(θ ) =92/120
θ =tan-1( 92/120)
θ = 37.48°
Therefore, the angle of elevation of the sun If we round up our decimal value to the nearest 10th, we have θ = 38°
Use the value of the linear correlation coefficient to calculate the coefficient of determination. What does this tell you about the explained variation of the data about the regression line? About the unexplained variation?
r=0.864
a) Calculate the coefficient of determination.
(Round to three decimal places as needed.)
b) What does this tell you about the explained variation of the data about the regression line?
c) What % of the variation can be explained by the regression line.
(Round to one decimal place as needed.)
About the unexplained variation?
d) What % of the variation is unexplained and is due to other factors or to sampling error.
(Round to one decimal place as needed.)
Answers
Answer:
Kindly check explanation
Step-by-step explanation:
Given the Coefficient of correlation (r) = 0.864
The Coefficient of determination (R^2) :
0.864^2 = 0.747 ( 3 decimal places)
B) the Coefficient of determinationR^2 tells about the proportion of variation in the dependent variable that is predicted by the independent variable, Hence, a proportion of about 0.75 should fall within the regression line.
C) percentage variation explained :
Coefficient of determination * 100%
0.747 * 100% = 74.7%
D) unexplained variation due to other factors or sampling error :
(total variation - explained variation) = (100 - 74.7)% = 25.3%