Using correlation coefficients, it is found that the -0.63 correlation between number of absences and final exam score means that there is a strong negative correlation between number of absences and final exam score.
What is a correlation coefficient?It is an index that measures correlation between two variables, assuming values between -1 and 1.
If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.
If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.
In this problem, the correlation is of -0.63, hence:
It means that that there is a strong negative correlation between number of absences and final exam score.
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Which expression is equivalent to
Answer:
option D is the correct answer
hope it helps you
make me brainliest if u are satisfied with this answer
Answer:
option D
hope it helps you
James has a meal delivery company that charges a $4 delivery fee plus $0.50 per mile. Complete the table to record the different values for the linear relationship.
Distance (miles) Cost ($)
2 ?
4 ?
6 ?
8 ?
PZL answer quick!
Answer:
2=5
4=6
6=7
8=8
Step-by-step explanation:
The formula is 4+.5(x)=
So multiply 0.5 by 2 which gives you 1 then add 4 which gives you 5.
To get 6 for 4, you multiply 0.5 by 4 which gives you 2 then add 2+4.
for 6, multiply 0.5 x 6=3 and then 3+4= 7
for 8, multiply 0.5 x 8=4 then add 4+4= 8
Glad to help you! :)
pls answer thank you
Answer:
[tex]8x^2+x-2[/tex]
Steps:
To solve this equation, you can simply subtract:
[tex](3x^2+4x-3)-(-5x^2+3x-1)[/tex]
================
[tex]3x^2+4x-3[/tex]
[tex]-5x^2+3x-1[/tex]
===============
[tex](3x^2)-(-5x^2)[/tex] = 8x^2
[tex]4x-3x[/tex] = x
[tex](-3)-(-1)[/tex] = -2
===============
8x^2 + x - 2
What if Mariana runs 20 minutes at the same speed how many kilometers will she run
What is ∑n=17(10n+90) equal to?
Enter your answer in the box.
Answer:
910
Step-by-step explanation:
[tex]\sum_{n=1}^{7}(10n+90)\\\\=\sum_{n=1}^{7}(10n)+\sum_{n=1}^{7}(90)\\\\=10\sum_{n=1}^{7}(n)+90(7)\\\\=10(\frac{7(7+1)}{2})+630\\\\=10(28)+630\\\\=280+630\\\\=910[/tex]
Equation
(a) y=x²-8
is it linear or nonlinear?
Answer:
Nonlinear
Step-by-step explanation:
You can determine if this equation is linear or nonlinear by noticing the squared x, meaning it is a quadratic and it will not be a straight line on the graph, but instead a parabola shape. Linear equations will not have an [tex]x^{2}[/tex] but will have one x.
what is (8a^-3)^-2/3 in it's simplest form
Answer:
a^2/4
Step-by-step explanation:
[tex](8*1/x^3)^-2/3\\(8/x^3)^-2/3\\(x^3/8)^2/3\\\sqrt[3]{(x^3/8)}^2\\ (x/2)^2\\x^2/4[/tex]
Answer:
I believe that the answer is a^2/4
Step-by-step explanation:
Find the value of d, plz reply asap I just have 5 min left to submit it
Answer:
97 degrees
Step-by-step explanation:
Angle d and the angle to the right of angle c are alternate interior angles. This means that these angles are congruent. The angle next to angle c is equal to 180-83 degrees, which is the same as 97 degrees. So, angle d has a value equivalent to 97 degrees.
hope this helps and I hope you submit it in time!
What is the diameter of a circle with a circumference of 132 ft? Use 22/7 for PIE.
Answer:
42
Step-by-step explanation:
Will give Brainliest if answer correctly....
Answer:
the last 3
Step-by-step explanation:
math
Factor Trinomials (a=1)
factor
x^2-10x+16
Answer:
(x-8)(x-2)
Step-by-step explanation:
factors of 16:
1 x 16
2 x 8
4 x 4
i'll select 2 and 8 as values because they can add up to 10
(x-8)(x-2)
i made them both negative so the middle term would be -10 but, when multiplied, would equal positive 16
solutions to the inequality below?
10
≤
2
x
−
1
≤
x
+
5
Answer:
[tex]10 \leqslant 2x - 1 \leqslant x + 5 \\ 10 + 1 \leqslant 2x - x \leqslant 5 + 1 \\ 11 \leqslant x \leqslant 6[/tex]
Need a way to solve this!
Answer:
x = 12 or - 12
Step-by-step explanation:
Answer:
x²=144 so 12²=144 so x is 12
no other value exists except 12
Pancho saved $1250 over the year from a part time job. He decided to take $850 of it to the bank
where it will earn 1.5% interest. How much interest will he earn if he leaves it there for 2 years?
Answer:
Pancho will earn $25.50 interest.
Step-by-step explanation:
interest= prt (principal x rate x time)
i= prt = 850(.015)(2)
i= 25.5
(.015 comes from dividing the percentage 1.5 by 100)
PLEASE HELP ASAP!! will mark brainlest
Answer:
72
Step-by-step explanation:
Area = base * height
Area = 9 * 8 = 72
Step-by-step explanation:
the formula to find area of rhombus in terms of its height and base is
A = h × b
therefore, 8 × 9 = 72 cm²
area of the given rhombus is 72cm².
hope this helps you!
1.
If there are 10 birds for every 4 dogs, the ratio of birds to dogs is
?_
Answer:
10:4
Step-by-step explanation:
10:4 because it says birds to dogs
31 divided by 8 =____with____left over
Answer:
3 with 7 left over
Step-by-step explanation:
8, 16, 24, 32
8x3=24
31-8x3= 32-24=7
31/8=3r7
Answer:
The answer is 3 with 7 left over
Step-by-step explanation:
8 can go into 31, 3 times. 8*3=24
31-24=7
Hope this helps mark brainliest please :)
Element X is a radioactive isotope such that every 14 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 360 grams, how long would it be until the mass of the sample reached 100 grams, to the nearest tenth of a year?
Answer:
25.9 years
Step-by-step explanation:
The half life of an isotope is related to the actual amounts by the equation:
N = Ni*(1/2)^(t/HL)
where N and Ni are the final and initial (Ni) amounts, t is the time (in years for this problem) and HL is the half-life, in years.
In this problem, we can write:
100 = 360*(1/2)^(x/14)
I'll reduce this to:
1 = 3.6*(1/2)^(x/14)
This can be solved by taking the log of both sides.
x = 25.87 or 25.9 years
If the area of a triangular kite is 60 square feet and its base is 10 feet, find the height of the kite.
Find y. Simplify completely.
у
9
25
y = [?]VI
=
Enter the number that belongs in the green box.
Answer:
........ . .............
A shopper wants to ensure she has enough cash to purchase a $41 wooden bench, so she asks a clerk what the total will be with the sales tax included. The clerk tells her the total will be $42.64. What is the sales tax percentage?
Answer:
The sales tax percentage is 4%
Step-by-step explanation:
4% of $41 is $1.64
$41+$1.64=$42.64
I hope this helps! Keep learning!
write the prime factorization of 98
Answer:
2 * 7^2
Step-by-step explanation:
98 /2 = 49
49 / 7 = 7
2 * 7 * 7 = 98
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Solve the equation 4(3A-4) = 56 for the variable A.
Show your work.
Answer:
A = 6
Step-by-step explanation:
4(3A - 4) = 56 (Distribute/multiply the 4 to everything inside the parentheses)
12A - 16 = 56 (Add 16 to both sides to get A on one side)
12A = 72 (Divide both sides by 12 to get A by itself)
A = 6
Answer:
A = 6.
Step-by-step explanation:
4(3a-4)=56
distribute
12a-16=56
add 16
12a = 72
divide by 12
a = 6
Solve the linear equation for x. –4. 8(6. 3x – 4. 18) = –58. 56 x =.
Answer:−
5.3852459
Step-by-step explanation:
A 3-pack of juice boxes costs $1.20. What is the unit price?
La verdad Que Yo Tampoco ce
Answer:
Step-by-step explanation:
whats the prime factorazion of 72
Answer:
Prime Factors of 72: 2, 3
Step-by-step explanation:
Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36 and 72
Krystal left the bookstore traveling 18 mph. Then, 3 hours later, Kori left traveling the same direction at 27 mph. How long until Kori catches up with Krystal
Answer:
Korl will catch up to Krystal in 2 hours.
Step-by-step explanation:
18x3=54 this shows how long Krystal has driven in 3 hours.
27x2=54 this shows that in 2 hours Korl will have driven 5 mph.
Now as you can see both quotient are 54 and the question is How long until Korl catches up to Krystal so it's 2 hours
HOPE THIS HELPED:)
PLEASE HELP ME !!!!!
12% of 80 working out
How to do the problem:
Assuming that you mean you want 12% of the number 80 and showing work, here is the answer:
To get X percent of any number, write the percent as a decimal and then multiply that decimal by the whole.
What I mean:
You want 12% of 80
so first change 12% into a decimal
12% is equal to .12 as a decimal
Then multiply that decimal by the whole
Since you want 12% of 80, 80 is the whole
that means you do .12 * 80
which is equal to 9.6
Thus(answer)
12% of 80 = 9.6
Explain the first step when dividing a fraction by a fraction.
The first step is to change the division operation into multiplication.
When dividing a fraction by another fraction, the first step is to change the division operation into multiplication. This can be done by using the concept of reciprocal or multiplicative inverse.
Reciprocal or multiplicative inverse of a fraction is a fraction that, when multiplied by the original fraction, gives a product of 1. In other words, if we have a fraction a/b, then its reciprocal is b/a.
So, the first step when dividing a fraction by a fraction is to find the reciprocal of the second fraction (the divisor). Let's say we have the fraction a/b divided by c/d. The reciprocal of c/d is d/c.
After finding the reciprocal, the division problem is transformed into a multiplication problem. We can rewrite the expression as follows:
(a/b) ÷ (c/d) = (a/b) × (d/c)
Now, we can multiply the fractions using the multiplication rules for fractions. Multiply the numerators (a and d) to get the new numerator, and multiply the denominators (b and c) to get the new denominator:
(a/b) × (d/c) = (a × d) / (b × c)
This is the first step when dividing a fraction by a fraction. Once you have obtained the product (a × d) / (b × c), you can simplify it further if necessary.
Learn more about dividing fractions click;
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