Answer:
Hope this helps
Step-by-step explanation:
15.5
10
(Computer won't do fractions so 15.5 out of 10 or 15.5 in decimal form)
Which is the best estimate of the correlation coefficient for the scatter plot ?
Answer:
Option (4)
Step-by-step explanation:
Table for the points from the graph attached,
x y [tex]x^{2}[/tex] [tex]y^{2}[/tex] xy
2.2 1.8 4.84 3.24 3.96
3.2 1.8 10.24 3.24 5.76
3.6 3 12.96 9 10.8
4.8 3.5 23.04 12.25 16.8
5.2 6.2 27.04 38.44 32.24
6.4 4.5 40.96 20.25 28.8
7.5 7.8 56.25 60.84 58.5
8.5 6.2 72.25 38.44 52.7
[tex]\sum x=41.4[/tex]
[tex]\sum y=34.8[/tex]
[tex]\sum x^2=247.58[/tex]
[tex]\sum y^2=185.7[/tex]
[tex]\sum xy=209.56[/tex]
n = 8
Formula for the correlation coefficient [tex]r=\frac{n\sum xy-(\sum x)(\sum y)}{\sqrt{[{n\sum x^2-(\sum x)^2][n\sum y^2-(\sum y)^2]}}}[/tex]
[tex]r=\frac{8(209.56)-(41.4)(34.8)}{\sqrt{[{8(247.58)-(41.4)^2][8(185.7)-(34.8)^2]}}}[/tex]
r = [tex]\frac{1676.48-1440.72}{\sqrt{266.52\times 274.56} }[/tex]
r = [tex]\frac{235.76}{\sqrt{73175.73}}[/tex]
r = [tex]\frac{235.76}{270.51}[/tex]
r = 0.87
r ≈ 0.9
Therefore, Option (4) is the answer.
7th grade math help me pleasee
Answer:
-4, -25, -1, -2.5
Answer:
B , C , G ,H
Step-by-step explanation:
Just to clarify Integers are whole numbers that are both negative and positive
fractions and decimals are not integers
Brainiest would be appreciated
High Hopes^^
Barry-
ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST
Which one of the following Venn diagrams represents all the following set of statements? Write the appropriate letter next to the statement.
Some triangles are acute
Some triangles are obtuse
No triangle is both acute and obtuse
Some acute triangles are equilateral
Answer:
the answer is C dawg
Step-by-step explanation:
There is no relation between the acute and the obtuse triangle is given. Then the correct option is B.
What are Sets?Sets are the collection of well-defined elements. A set is represented by a capital letter symbol and the number of elements in the finite set is shown as curly bracket {..}.
Venn diagrams are a representation of the sets by the diagram.
Some triangles are acute
Some triangles are obtuse
No triangle is both acute and obtuse
Some acute triangles are equilateral
There is no relation between the acute and the obtuse triangle is given. Then the correct option is B.
More about the sets link is given below.
https://brainly.com/question/8053622
Tina won a prize of £1000 000 She spent £40 000 on a new car Then she spent half the money left on a house How much did Tina spend on the house?
Answer:
480,000
Step-by-step explanation:
1,000,000 - 40,000 = 960,000
960,000 divided by 2 is 480,000
Answer:the answer is
Step-by-step explanation:
If f(x)=3x-7, find f(x)=2
Answer:
f(3) = 2 or (3, 2)
The y-value we solved for is 2.
Step-by-step explanation:
The equation they give you, all you need to do is plug in the x-value they give you.
f(x) the y-value in (x, y)
it will be on that bold, vertical line on the graph
2=3x-7
add 7 to both sides
9=3x
divide both sides by 3
x=3
y=2
Thomas bought 4 shirts from a store. The price of each shirt was the same. After he bought the shirts, his account balance showed a change of −$89.08. What would have been the change to Thomas's account balance had he only bought 1 shirt from the store?
A. $22.27
B. -$22.27
C. $22.45
D. -$22.45
Answer:
B. -22.27
Step-by-step explanation:
To find the answer just divide the acount balance after he bought the 4 shirts by 4 to get the answer of what his balance would be after he bought 1 shirt.
The median number of magazine appearances made by 7 models is 5. The range of number of magazine appearances by those models is 5. Determine if the following statement is true, is false, or does not contain enough information. If the fewest magazine appearances is 3, then the greatest number of appearances is 9.
Answer:not enough information
Step-by-step explanation:
Using definition of range = greatest - lowest , we found that given statement is false.
What is range of a given data?Range of a data is the difference between the highest and lowest quantity in the given data.
For example : Given data is 2,5,9,5,1
Range of this data = Highest - Lowest = 9-1 =8
Given the data of the number of appearances made by 7models
Median = 5
Range = 5
If the fewest magazine appearances is 3
We know that Range = Greatest number of appearances - fewest appearances
⇒ 5 = Greatest number of appearances - 3
⇒ 5 +3 = Greatest number of appearances
∴Greatest number of appearances = 5+3 = 8
But given is that the Greatest number of appearances will be 9 in the given statement.
∴ The given statement is false.
Also, learn more about range of data from the link below:
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I need help fast!!
Which expressions have a value of 19 1/4
choose all that apply
A.77 ÷ 4
B. 231 ÷ 12
C. 151 ÷ 8
D. 315 ÷ 16
E. 298 ÷ 15
F. 385 ÷ 20
Answer:
A:77 divided by 4
Step-by-step explanation:
77 divided by 4 = 19.25 and 19.25=19 1/4
grams of Sean made a snack for himself and his friends using 4 slices of multigrain bread and 6 tablespoons of peanut butter. He cut the sandwiches into 8 equal pieces. Each of the 8 pieces had carbohydrates from the peanut butter. Each of the 8 pieces had grams of carbohydrates from the multigrain bread. Food Serving Carbs (g) peanut butter 2 tbsp 6.26 multigrain bread 1 slice 12.1
Answer: 4b+5=13 \-x+sqrt1−x 2 \-=sqrt2(2x 2 – 1)
Step-by-step explanation:
Answer:
Each of the 8 pieces had
✔ 2.3475
grams of carbohydrates from the peanut butter.
Each of the 8 pieces had
✔ 6.05
grams of carbohydrates from the multigrain bread.
Step-by-step explanation:
(Forgive me for the late answer) Have a good day! :D
Which of the following is the property that describes the steps giver
from Step 1 to Step 27
Step 1: 3x - 5 + 5 = 2x + 3 + 5
Step 2: 3x = 2x + 8
Addition Property
Distributive Property
Subtraction Property
Combine Like Terms
Addition property is the answer
tablespoon(Tbs.)
divided by 2 =
Answer:
3 teaspoons
Step-by-step explanation:
Answer:
3 tbs
Step-by-step explanation:
Which of the following answers is the best description for the deer population with the greatest growth rate: A.The blue line shows a deer population that grew with an exponential growth rate. In the first year the population increased by only one deer, but between years seven and eight the population grew by two deer, showing that the growth rate continuously doubles. B.The blue line shows a deer population that grew with a linear growth rate, because the graph shows that the population increased by approximately one deer per year. C. The red line shows a linear growth rate, because an approximate straight line estimates a growth rate of five deer per year. D. The red line demonstrates an exponential growth rate, because the growth rate for the deer population is itself continuously increasing
Answer: D) the red line demonstrates an exponential growth rate, because the growth rate for the deer population is itself continuously increasing.
Step-by-step explanation:
Got it right on edge
Answer: D
Step-by-step explanation: Edge 2023
2y - 6 = -6x, solve for y (must be in form y = mx + b)
Answer:
y=-3x+3
Step-by-step explanation:
hope this helps :)
what is the midpoint of segment AB if A and B are located a (2,-1) and (8,3)?
Answer:
(5,1)
Step-by-step explanation:
to fins the midpoint add both x points and divide by 2. then, both y points and divide by 2.
8+2/2 , 3-1/2
10/2 , 2/2
5 , 1
hope this helps! brainliest please?
Michelle invests $15,000 in a partnership that has four other partners.The total investment of all partners is $ 240,000. What percent of the business does Michelle own?
Michelle owns about 6.25% of the total investment.
What is the percentage?The Percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.
Given that Michelle invests $15,000 in a partnership that has four other partners. The total investment of all partners is $240,000.
The percentage of investment will be calculated as below:-
Percentage = ( 15000 / 240000 ) x 100 %
Percentage = 00625 x 100%
Percentage = 6.25%
Therefore, Michelle owns about 6.25% of the total investment.
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1. Simplify:
points)
(2x - 3x2 + 4x3 – 6x5) + (7x6 – 5x3 + 3x²)
Answer:
7x⁶ - 6x⁵ - x³ + 2x
Step-by-step explanation:
Step 1: Write expression
(2x - 3x² + 4x³ - 6x⁵) + (7x⁶ - 5x³ + 3x²)
Step 2: Combine like terms (x³)
7x⁶ - 6x⁵ - x³ - 3x² + 2x + 3x²
Step 3: Combine like terms (x²)
7x⁶ - 6x⁵ - x³ + 2x
Researchers observed the grouping behavior of deer in different regions.The following scatter plot shows data collected on the size of the group and the percent of the region that was woodland.
The relationship between group size and percent woodland appears to be negative and nonlinear.Which of the following statements explains such a relationship
Answer:
As the percent of woodland increases, the number of deer observed in a group decreases quickly at first and then more slowly.
Step-by-step explanation:
Since the graph is nonlinear, you can rule out answers that say or suggest 'constant change.'
List all the factors of 33 from least to greatest. Enter your answer below,
using a comma to separate each factor.
Answer here
Answer:
1,3,11,33
Step-by-step explanation:
33 can be divided by itself, 11,3 and 1 without leaving a remainder.
The factors of 33 from least to greatest is 1, 3, 11, 33.
The factors of 33 are the numbers that, when multiplied by another number, result in 33.
The factors of 33 are:
33 = 1 x 33
33 = 3 x 11
So, the factors are:
1, 3, 11, 33
Now, the least factor is 1 and Greatest factor is 33.
Thus, the factors of 33 from least to greatest is 1, 3, 11, 33.
Learn more about Factor here:
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Which one of the following lines is the graph of the
equation y = 2x - 3?
I'll give you brainliest!
Answer:
Line D
Step-by-step explanation:
The -3 is the y intercept, so the line must cross the y axis at -3.
The 2 is the slope. Slope is rise/run so the line needs to rise 2 for each run of 1 (up 2 right 1).
The only line that does both of these things is Line D.
Please help guys...
It should be solved using FOIL and it’s multiplying polynomials by polynomials
(a + b - c)(a + b +c)
Answer:
2 b 8 is your answer
Step-by-step explanation:
hope i helped GL<3
Find the measure of each angle.
(3x + 5)^(10x-7)
The measure of angle TQR is 47 degrees and the measure of angle TRS is 133 degrees
In order to determine the measure of each angle, the value of x has to be determined first
The sum of angles on a straight line is 180 degrees
Thus : (3x + 5)° + (10x - 7)° = 180°
3x + 5 + 10x - 7 = 180
combine similar terms
3x + 10x = 180 - 5 + 7
add similar terms
13x = 182
divide both sides of the equation by 13
x = 14°
Substitute for x in (3x + 5)° and (10x - 7)°
(3x + 5)° = 3(14) + 5 = 47°
(10x - 7)° = 10(14) - 7 = 133°
To learn more about angles, please check : https://brainly.com/question/17437903?referrer=searchResults
Is the graph a function or not? Why or why not?
Answer:
No, it is not a function
Step-by-step explanation:
Using the vertical line test, you would find that it would hit two points, making it not a funtion.
Factor.
x^4+12x^2+20
Answer:
[tex](x^2+2)(x^2+10)[/tex]
Step-by-step explanation:
[tex]x^4+12x^2+20=(x^4+2x^2)+(10x^2+20)[/tex] separating middle term
[tex]x^2(x^2+2)+10(x^2+2)[/tex] factoring out common denom.
[tex](x^2+2)(x^2+10)[/tex] combining
I know the answer is 0x+2 BUT I NEEDDD THE EXPLANATION!!
can this question be solved? 1/2x = 14
Answer:
Simplify 14 x 2 to 28
x=28
A symphony orchestra is arranged in a semicircle around the conductor. The rows are about 3 feet apart, with the first row about 6 feet from the conductor. A mid-sized orchestra has about 6 rows of chairs. What is the approximate delay between the instant when a play at the 6th row start a note and when the conductor hears the note?
Answer:
19 ms
Step-by-step explanation:
We need to find the time it takes for the sound from the 6th row gets to the conductor.
Since there are 6 rows and each row is 3 feet apart, since the orchestra is arranged in a semi-circular manner around the conductor, the distance from the 6 th row to the 1st row is (6 - 1) × 3 = 5 × 3 = 15 feet.
Now, since the conductor is 6 feet from the first row, his distance from the 6th row is 15 feet + 6 feet = 21 feet.
So, time approximate delay between the instant when a play at the 6th row start a note and when the conductor hears the note, t = distance between 6th row and conductor/speed of sound.
Speed of sound = 343 m/s
distance between 6th row and conductor = 21 feet. In meters, it is 21 × 0.3048 m = 6.4008 m
t = 6.4008 m ÷ 343 m/s
= 0.019 s
= 19 ms
[tex]|y-4|\ \textgreater \ 8[/tex]
Answer:
y > 4 or y < -4
Step-by-step explanation:
What is the value of the expression below?
(9.5-3x 15)
(11)-05
0.5
5
10
19.5
Answer:
The answer is 10
Step-by-step explanation:
Just follow PEMDAS
x - у - 2z = -6
3х + 2y = -25
—4х + у — z = 12
Answer:
(1) x-y-2z=-6 , (2) 3x+2y=-25 , (3) -4x+y-z=12
Step-by-step explanation:
Multiply (3) by 2,
-8x + 2y - 2z = 24
subtract above equation from (1)
9x - 3y = -30 --> 3x - y = - 10
subtract above equation from (2)
3y = -15 --> y = -5
Put y value back into (2)
3x + 2(-5) = -25 --> 3x - 10 = -25 --> 3x = -15 --> x = -5
Put x and y values into (3)
-4(-5) + (-5) - z = 12 --> 20 - 5 - z = 12 --> 15 - z = 12 --> z = 3
Hope its right good luck!!
Please help! (Look at image)
Answer:
27/49
Step-by-step explanation:
look image
Red
Answer:
21^84/21^9
Step-by-step explanation:
you multiply the base and you will get 21 Then you multiply the two exponents 7 and 4 is 28. then multiply 28 times 3 is 84 and the denominator stay the same