Shelly found that the coefficient of determination between the age of a runner x and the runner’s finishing position y was about 0.728. What can she conclude?
72.8% of the variation in the runner’s finishing position is explained by the runner’s age.
0.728% of the variation in the runner’s finishing position is explained by the runner’s age.
53% of the variation in the runner’s finishing position is explained by the runner’s age.
0.728 more variation in the runner’s finishing position is caused by the runner’s age.
Answers
Answer:
72.8% of the variation in and the runner’s finishing position is explained by the runner’s ageStep-by-step explanation:
The number 0.728 is converted to percentage
0.728*100% = 72.8%Correct option is the first one
Answer:
72.8% of the variations in the runner's finihsing position is explained by the runner's age
explanation:
Related Questions
Which equation describes the line whose x-intercept is (4,0) and whose y-intercept is (0,-3)?
Answers
Answer:
[tex]y = \frac{3}{4}x - 3[/tex]
Step-by-step explanation:
In slope intercept form y = mx + b
We have the y intercept already so our equation becomes y = mx -3. Now we need to figure out the slope, we do this by subtracting the y values from both points and the x values from both points:
-3 - 0 = -3
0 - 4 = -4
Slope = -3/-4 the negatives cancel and now we have 3/4 as the slope.
Now the equation is y = 3/4x -3
[tex] y \: = \: \frac{3}{4} x \: - 3[/tex]
Double checking by inputting values such as x = 0 we now get (0, -3) which is correct and if the x-intercept is 4 then it should give us a y value of 0 which = (4,0). Yep! This is the correct linear equation for the line described
Evaluate whether each value makes a true or false statement.
6. 16 < b + 8. if b = 22
O True
O False
Answers
Answer:
True
16 < 22 + 8
16 < 30
Step-by-step explanation:
add 8
Which expressions are equivalent to 18 + 24?
Select all that apply.
A
3(6 + 8)
B
3(6 + 21)
C
6(12 + 2)
D
6(3+4)
2(16 + 22)
OF
2(9 + 12)
Answers
Answer: A and D are correct because they both equal 42.
Step-by-step explanation: Both A and D when distributed equal 18 + 24.
B is incorrect because that equals 18 + 63
C is incorrect because that equals 72 + 12
The last one is incorrect because when simplified it is 76 of 30 and 76 of 30 equals 22.8, not 42.
Answer:
A only
Step-by-step explanation:
Not sure if your missing letter options. If D is asking all 3 to be right, then no, D is not correct. If there are 2 letters missing then the last equation also works.
I reread the question and option D seems like it is
6(3+4) * 2(16 + 22)
2(9 + 12)
Which equals
(42 * 76) / 42 = 72
So not D
Please mark Brainliest for complete answer with work. :)
HELP I WILL GIVE EXTRA POINTS AND BRAINLIEST!
Divide the number 90 into three parts in the ratio 1:4:5.
Answers
Answer:
9:36:45
Step-by-step explanation:
You add up 1+4+5=10
divide 90 by 10 = 9
multiply each part of the ratio by 9
1*9:4*9:5*9
Therefor you get the answer: 9:36:45
Hope this helps
The division of the number 90 in the ratio 1:4:5 will be 9:36:45.
What are ratios and proportions?An ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value. The numerical relationship between two values demonstrates how frequently one value contains or is contained within another.
Given that the number 90 is divided in the ratio 1:4:5. The division will be done as below,
x + 4x + 5x = 90
10x = 90
x = 90 / 10
x = 9
The ratio will be,
1:4:5 = 9 : ( 9 x 4 ) : ( 9 x 5 )
1:4:5 = 9: 36: 45
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Claudia is driving to her cottage with her family. They drive
150 miles in 3 hours.
What is the unit rate in miles
?
The answer is 50 because you divide 150 by 3 and you should get 50 I hope this helps!!
Answers
Because 150 miles divided by 3 hours is 50 miles per hour
The unit rate: y=50x or 1(hour)/50mph
what is 2/5÷4 i need help on my khann
Answers
Answer:
1/10 or .1
Step-by-step explanation:
A car runs 20 km using 1 litre of petrol. How much distance will it cover in 1 and 1/4 litre of petrol ? *
Answers
HELLLPPPPP
You want to be able to
withdraw $50,000 from your account each year for 30 years after you retire:
You expect to retire in 25 years.
If your account earns 4% interest, how much will you need to deposit each year until retirement to
achieve your retirement goals?
Answers
Answer:
$50, 000 +4+30 =$ 84.000
jadi 84⁴%
25+4% = 29%
Step-by-step explanation:
i'm sorry ya kalo jawaban nya salah
5)
The perimeter of a triangle is 60 feet. If the sides are in the ratio 3:4:5, find the
length of each side.
Answers
Answer:
15,20,25
Step-by-step explanation:
The ratio of the sides is 3:4:5
So 3x + 4x + 5x = 60
12x = 60
x = 60/12
x = 5
The sides are therefore
3x = 3*5 = 15
4x = 4*5 = 20
5x = 5*4 = 25
Total 60 just what it should be
if (8^9)^p=8^18what is the value of p
Answers
Answer:
[tex]\huge\boxed{p=2}[/tex]
Step-by-step explanation:
In order to simplify this equation [tex](8^9)^p = 8^{18}[/tex], we have to use basic exponent rules.
Exponent rules tell us that [tex](a^b)^c = a^{b\cdot c}[/tex].
We have [tex](8^9)^p[/tex], so this means that it's equivalent to [tex]8^{9 \cdot p}[/tex] or just [tex]8^{9p}[/tex].
Now, we have [tex]8^{9p}=8^{18}[/tex]
Let's just focus on the exponents for now.
Since we know that in order for [tex]8^{9p}[/tex] to be equivalent to [tex]8^{18}[/tex], the exponents must be the exact same. So, [tex]9p=18[/tex].
We can find p by divide both sides by 9.
[tex]p = 2[/tex]
Hope this helped!
Graph y = 2x and identify the x-intercept
Answers
Answer:
0
Step-by-step explanation:
You buy a 625.5 ML of container of dish soap you already have 142.71 ML at home how many ML how many ML do you have in total
Answers
Answer:
768.21 ML
Step-by-step explanation:
solve -5(x-7)^2+30=-20
Answers
Answer:
x=7−√10 or x=7+√10
Step-by-step explanation:
−5(x−7)2+30=−20
Step 1: Simplify both sides of the equation.
−5x2+70x−215=−20
Step 2: Subtract -20 from both sides.
−5x2+70x−215−(−20)=−20−(−20)
−5x2+70x−195=0
For this equation: a=-5, b=70, c=-195
−5x2+70x+−195=0
Step 3: Use quadratic formula with a=-5, b=70, c=-195.
x=
−b±√b2−4ac
2a
x=
−(70)±√(70)2−4(−5)(−195)
2(−5)
x=
−70±√1000
−10
x=7−√10 or x=7+√10
3x +21 6x-60 find the value of x 25 26 27 28 will.mark brainest
Answers
Answer:
Heloo
Step-by-step explanation:
Simplifying
3x + 21 = 6x + -60
Reorder the terms:
21 + 3x = 6x + -60
Reorder the terms:
21 + 3x = -60 + 6x
Solving
21 + 3x = -60 + 6x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-6x' to each side of the equation.
21 + 3x + -6x = -60 + 6x + -6x
Combine like terms: 3x + -6x = -3x
21 + -3x = -60 + 6x + -6x
Combine like terms: 6x + -6x = 0
21 + -3x = -60 + 0
21 + -3x = -60
Add '-21' to each side of the equation.
21 + -21 + -3x = -60 + -21
Combine like terms: 21 + -21 = 0
0 + -3x = -60 + -21
-3x = -60 + -21
Combine like terms: -60 + -21 = -81
-3x = -81
Divide each side by '-3'.
x = 27
Simplifying
x = 27
Answer:
x = 27Step-by-step explanation:
3x + 21 = 6x - 60
3x - 6x = -60 - 21
-3x = -81
x = 27
25 POINTS! Please answer quick!
Answers
Answer:
a. 4.35 x 10-⁴
= 0.000435
b. 4.16 x 10¹
= 41.6
c. 9.2 x 10-³
= 0.0092
d. 1.1 x 10-⁵
= 0.000011
e. 6.5 x 10⁵
= 650000
Step-by-step explanation:
Very simple and quick
What is the product?
(3a2b7)(5a3b8)
O 8a5b15
O 8a6b56
O 15a5b15
O 15a5b56
Answers
Option C is correct, 15a⁵b¹⁵ is the product of expression (3a²b⁷)(5a³b⁸)
We have to find the product of (3a²b⁷)(5a³b⁸)
a and b are the variables in the expression.
We have to find the product.
Let us first multiply the constant terms which are 3 and 5 we get 15
15 (a²b⁷)(a³b⁸)
We know that in a product if the bases are same then the powers will be added
15a⁵b¹⁵
Hence, option C is correct, 15a⁵b¹⁵ is the product of expression (3a²b⁷)(5a³b⁸)
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PLEASE HELP ILL GIVE U BRAINLIEST (IGNORE WHERE IT SAYS 8 AND 2 POINTS BECAUSE THATS HOW MUCH ITS WORTH IN THE GRADEBOOK)
Answers
Answer:
x = 1, XZ = 48
Step-by-step explanation:
So you already have the diagram with the number labeled,
4(x + 5) and 2(x + 11)
We know that Y is the midpoint between X and Z so we know that XY = YZ:
4(x + 5) = 2(x + 11)
Let's solve the equation for x:
4x + 20 = 2x + 22 (Distributive Property)
Subtract 20 from both sides:
4x = 2x + 2
Subtract 2x from both sides:
2x = 2
Divide both sides by 2:
x = 1
So now we know that x = 1, we want to find XZ:
XZ = 4(x + 5) + 2(x + 11)
We can plug in x (1):
XZ = 4(1 + 5) + 2(1 + 11)
Simplify:
XZ = 4(6) + 2(12)
XZ = 24 + 24
XZ = 48
The mass of a jar of flour is 2.1 kg. What is the total mass of 16 jars of flour?
Answers
Answer:
33.6
Step-by-step explanation:
2.1 times 16=33.6
please help this is timed
solve for m
Answers
Answer:
you need to put numbers
Graph the line x=2 please help
Answers
Answer:
Step-by-step explanation:
Since x=2 is a vertical line, there is no y-intercept
$98 is deposited into a checking account
Answers
Answer:
what's the rest of the problem?
7.38
5. Mr. Crossley is building a new dog house for Chester.
He starts with a piece of wood that is 8 feet long. How
many pieces of woods can he cut if he needs each piece
to be 2 feet?
Answers
Answer:
4 Pieces
Step-by-step explanation:
8 ÷ 2 = 4
Answer:
Step-by-step explanation:
Hello there!
He has 8 ft of wood, and he needs each peice to be 2 ft long. To solve this, we divide 8 ft by 2 ft (this will determine how many 2 ft peices can be cut from 8 ft). 8 ÷ 2 = 4, so this means he can cut four peices of wood to build the doghouse for Chester!
I hope this answer helped you! If it did, please rate it and give it a Thanks!
Have a wonderful day!
Kenneth bought a new roll of tape. There were 59.6 yards of tape on the roll. Then Kenneth used 4 yards of the tape to make a collage. How much tape is left on the roll?
Answers
Answer:
55.6 yards
Step-by-step explanation:
I WILL GIVE YOU BRAINLIEST ANSWER AS SOON AS POSSIBLE!!
rewrite 19-(-12) as a addition problem
Answers
Answer:
19 + 12 = 31
Step-by-step explanation:
the subtraction and negative make it positive so that is how you get addition
Answer:
19-(-12) = 19+12=31
Step-by-step explanation:
When ever there is a negative number after a subtraction sign, you can change the subtraction to addition and change the negative to a positive.
Choose the correct simplification of (7x^3y^3)^2. (5 points) 100 POINTS GIVING BRAINLIEST FOR GOOD EXPLANATION
Select one:
a. 14x^6y^6
b. 49x^5y^5
c. 49x^6y^6
d. 14x^5y^5
Answers
Answer:
Option C
Step-by-step explanation:
(7x^3y^3)^2
= (7)^2 * (x^3)^2 * (y^3)^2
= 49 * x^(3*2) * y^(3*2)
= 49x^6y^6
You have to distribute the terms in "7x^3 * y^3" each to the power of 2
(7)^2 * (x^3)^2 * (y^3)^2
Now you can apply the rule "(x^a)^b = x^a*b" and further simplify the expression
Answer:
it is c
Step-by-step explanation:
2x7=49 so its not a or d. 3x2=6 so both would be six so it is 49x^6y^6
helllllllllllllllllp
Answers
Answer:
Non linear function
Step-by-step explanation:
Its not straight no not linear and relations are not that at all
Given quadrilateral DEFG is an isosceles trapezoid. Find DE.
A-10
B-3
C-12
D-11
Answers
The measure of DE is 10 from the given figure
Since the given trapezoid is an isosceles trapezoid, this shows that two of the sides will be equal. According to the given diagram, we can say that:
DG = EFGiven the following parameters
DG = 2x + 5
EF = 3x + 2
2x + 5 = 3x + 2
Collect the like terms
2x - 3x = 2 - 5
-x = -3
x = 3
Get the measure of DE
DE = 4x - 2
DE = 4(3) - 2
DE = 12 - 2
DE = 10
Hence the measure of DE is 10 from the given figure
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What is the answer to this --->
Jessica makes $9.00 an hour babysitting her sister. If Jessica made
$38.25, how many hours did she babysit? 4.25 hours
Answers
Answer:
4.25 hours
Step-by-step explanation:
38.25/9
Danielle’s text messaging plan cost seven dollars for the first 700 messages and $.30 for each additional text message if she owes 1844 text messaging in the month of October how many text messages did she send that money
Answers
1844-700= 1144
1144/.30=347.2+ 7 ( First 700 texts cost 7$)= $350.2
Fraser scores 43% in a spelling test. What percentage did he get wrong?
Answers
Answer:
57% incorrect
Step-by-step explanation:
100- 43= 57. Assuming that the test is out of 100%, he got 57% of the test incorrect