Answer:
10%
Step-by-step explanation:
Price of computer = $750
Amount of sales tax = $75
Sales tax rate = Amount of sales tax / Price of computer × 100
= $75 / $750 × 100
= 0.1 × 100
= 10%
Sales tax rate = 10%
Sales tax rate = 10% of selling price
What is the slope of the line through (-10,1) and (0,-4) ?
Answer:
-5/10 or -1/2
Step-by-step explanation:
A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade point average (GPA), y. He collects data for 15 randomly selected students and determines the value for r2 was 31%.
Which of the following gives the best interpretation of this value?
31% of the variation in the number of absences is accounted for by the linear relationship with GPA.
69% of the variation in the number of absences is accounted for by the linear relationship with GPA.
31% of the variation in the GPA is accounted for by the linear relationship with number of absences.
56% of the variation in the GPA is accounted for by the linear relationship with number of absences.
Answer:
C: 31% of the variation in the GPA is accounted for by the linear relationship with number of absences.
Step-by-step explanation:
right on edge
The correct interpretation of the value of r² in this context is 31% of the variation in the GPA is accounted for by the linear relationship with the number of absences.
The interpretation of the value of r² in the context of the relationship between a student's number of absences (x) and their grade point average (GPA) (y).
First, what is r²? The coefficient of determination, denoted as r², is a statistical measure that represents the proportion of the variance (variation) in the dependent variable (GPA) .
That can be explained or predicted by the independent variable (number of absences) in a linear regression model.
Here, the value of r² is 31%. This means that 31% of the total variability in the GPA scores of the 15 randomly selected students can be explained by the linear relationship with the number of absences.
31% of the differences in GPAs among the students can be attributed to the differences in their number of absences.
The remaining percentage (100% - 31% = 69%) represents the unexplained or residual variation in the GPA scores.
This unexplained variation could be due to other factors not considered in the linear relationship, such as individual study habits, natural academic ability,
or other variables that were not part of the data analysis.
The interpretation is that 31% of the variation in the GPA scores can be accounted for by the linear relationship with the number of absences, while 69% of the variation remains unexplained by this relationship.
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I need help. If you can, thank you.
Answer:
Y = 2x + 1
Step-by-step explanation:
Hope this helps. Pls give brainliest.
PLEASE HELP THIS IS DUE AT 11!!!!!!!!!!! (-3v+1)+7-(6v+6)=-37
A 4
B -2
C 2
D 0
Answer:
v = 13/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
(-3v + 1) + 7 - (6v + 6) = -37
Step 2: Solve for v
Distribute negative: -3v + 1 + 7 - 6v - 6 = -37Combine like terms: -9v + 2 = -37Isolate v term: -9v = -39Isolate v: v = 13/3obtain the derivative of y=2x^2
Answer:
[tex]\displaystyle y' = 4x[/tex]
General Formulas and Concepts:
Calculus
Differentiation
DerivativesDerivative NotationDerivative Property [Multiplied Constant]: [tex]\displaystyle \frac{d}{dx} [cf(x)] = c \cdot f'(x)[/tex]
Basic Power Rule:
f(x) = cxⁿf’(x) = c·nxⁿ⁻¹Step-by-step explanation:
Step 1: Define
Identify
[tex]\displaystyle y = 2x^2[/tex]
Step 2: Differentiate
Derivative Property [Multiplied Constant]: [tex]\displaystyle y' = 2(x^2)'[/tex]Basic Power Rule: [tex]\displaystyle y' = 4x[/tex]Topic: AP Calculus AB/BC (Calculus I/I + II)
Unit: Differentiation
PLS HELP I NEED IT
I WILL AWARD BRANLIEST
Every triangle has a total of 180 (when you add all three angles together), and the same would be for a straight angle, or two angles formed by am angle bisector (DC). 180-33=147, so the top part of C would be 147, which isn't necessarily needed, but that'd be how to solve that. A+B+C=180. A+2x+C=180. A would be 33 because AB and DC (segments) are parallel, and the segment bisector AE is a straight line, so 33+2x+C=180. 180-33=147/2=73.5, if I did that correctly.
In the slope-intercept form, which variable
represents the slope/measure of change?
find m⦣1 in parallelogram ABCD.
Answer:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Step-by-step explanation:
Thats the alphabet so the P is the 16th letter so it's 16 thx pls do brainliest thanks so much
ANSWER THIS IS FOR EXTRA CREDIT
Answer:
The answer is c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
There are 72 female performers in a dance recital. The ratio of men to women is 2:9. How many men are in the dance recital?
Answer:
48
Step-by-step explanation:
72 ÷ 3 = 24
so you know that the men is 24 × 2 = 48
48:72 = 2:3
i looked it up and it says x=4 and theres 12 men but i dont think that helps im so sorry i couldnt find anything:(
Factorise
a² - 144
Please factorise this
Answer:
a² ÷a = a
144 ÷ 2= 12
(a - 12) (a + 12)
Answer:
[tex]\bf\pink{(a-12)\times (a+12)}[/tex]Step-by-step explanation:
Given Expression :-[tex]\bf\blue{a^{2} - 144}[/tex]Steps to factorise :-[tex]\longrightarrow\:\:\bf\red{a^{2} - 144}[/tex]
Write the number in the exponential form with an exponent of 2[tex]\longrightarrow\:\:\bf\orange{a^{2}-12^{2}}[/tex]
Using a²-b² = (a-b)(a+b), factor the expression.[tex]\longrightarrow\:\:\bf\purple{(a-12)\times (a+12)}[/tex]
(Refer the attachment for graph representation)
Graph Details :-[tex]\bigstar\:\:\bf{y=a^{2}-144}[/tex]
[tex]\rm{ Roots \:\:(-12,\:0)\:(12,\:0)}[/tex][tex]\rm{Domain \:\:a \in {\mathbb{R}}}[/tex][tex]\rm{Range \:\:y\in \bigg( -144,\:+\infty \bigg) }[/tex][tex]\rm{Minimum \:\: (0,\:-144)}[/tex][tex]\rm{Vertical\: Intercept\:\:(0,\:-144)}[/tex]Hi, thanks to the person that is answering all my questions! the reason im doing this is my teacher said if I finish all my moby max she gonna replace all my low test grades
Answer:
não consigui entender
sanders found 6/7 of a pie in the fridge. he eats 1/3 and gives 1/2 to sister. How much is left
Answer:
1/42
Step-by-step explanation:
consumed
1/2+1/3= 5/6
left
total- consumed
6/7-5/6= 1/42
Simplify completely 4m^3 over 3m^2n X 9n^2 over 30m^2n^2
Answer:
The answer is 2/405Xmn with an exponent of 5 at the end
Help, ima super dumb
Which number is not in scientific notation?
3.2 ⋅ 10–2
15 ⋅ 1020
8 ⋅ 1013
1.42 ⋅ 10–9
Answer:
The correct answer should be B
Step-by-step explanation:
If this helped please mark brainliest!
question is in picture
Answer:
answer would be -6 :)
Step-by-step explanation:
Answer:
-6
To check answer multiply -5 x 6
PLEASE HELP ME I NEED THE ANSWER ASAP THANK YOU SO MUCH!!
dark blue is the answer
Solve the system of equations by substitution.
X + y = 21
y = 6x
Answer:
x = 3
y = 18
Step-by-step explanation:
you replace y with 6x
x + 6x = 21
combine like terms
7x = 21
divide both sides by seven
x = 3
then you plyg 3 into the other equation
y = 6(3)
y= 18
Answer:
x=3
y=18
Step-by-step explanation:
x+y=21..........equation 1
or,x=21-y......equation 2
y=6x.......equation3
substituting the value of x in equation 3
y=6(21-y)
or,y=126-6y
or,7y=126
y=18
again,substituting the value of y in equation 2
x=21-y
or,x=21-18
x=3
x=3,y=18
Last year, Ivy's pant measured 12 inches. This year, her plant is 75% taller.
How many inches did her plant grow?
Answer:
The plant grew 9 more inches since last year.
Step-by-step explanation:
75% of 12 is 9 and the initial plant growth was 12 inches.
So, the plant grew 9 more inches since last year.
The plant is now 21 inches.
Answer:
9
Step-by-step explanation:
Divide 12 by 4 to get 25% = 3
25% x 3 = 75%
3 x 3 = 9
What is the next term of the arithmetic sequence? 1, 3, 5, 7, 9
Answer:
In this case, adding 2 to the previous term in the sequence gives the next term. In other words, an=a1+d(n−1) a n = a 1 + d ( n - 1 ) . This is the formula of an arithmetic sequence.
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
assuming they keep continuing on as odd the next number would be 11
Solve the equation.
6W + 5y = 2z solve for y
Pls help!!!
Answer:
Y = 2/5z-6/5w
Step-by-step explanation:
6W + 5y = 2z
1. Subtract 6W from both sides
2. 5y = 2z-6W
3. Divide both sides by 5
4. y = 2/5z-6/5W
what is 2 + (-7/20)? I've been trying to figure it out for a while but i cant seem to get the right answer.
In a board game, the player who makes the last move receives an 11-point bonus for ending the game. Let s represent the score before the endgame bonus and f represent the final score. Find the valué of f when s = 1
Answer:
12
Step-by-step explanation:
Given that :
Player who makes last move receives 11 - point bonus
Let s = score before end game bonus ; f = final score ;
Final score (f) when s = 1
Final score =) score before end game bonus) + 11 point bonus
Final score = 1 + 11 = 12
Given the triangle above, solve for x.
Answer:
im not 100 percent sure but i think its x=71
Answer:
Step-by-step explanation:
The problem with this question would be resolved in a New York second if people learned what an exterior angle was. x is an exterior angle. Exterior angles have their own set of properties. One of them is that they are the sum of the two interior angles not supplementary to the given exterior angle.
In the diagram above the supplement to x has no marking. It is not an exterior angle. x is the exterior angle.
A triangle has Interior sums of 180o. Everyone here seems to understand that. What is not understood is the properties of x and the other two exterior angles. Exterior angles polygons of any number of sides have exterior angles that add up to 360 degrees. The 360 degrees does not indicate that they are not circles.
So the answer to this question is that x = 64 + 45 = 109. If you put anything else in, you will get it wrong.
This question checks to see if you understand the difference between an exterior angle and an interior angle. 71 is not the answer. It is not even the second best answer. It is just the third interior angle.
Identify the points after a 90 degrees clockwise rotation: A (5, -9) B (3, 1) C(-10, -10)
A (-5, -9)
B (3, -1)
C (10, 10)
A clothing store used the sign shown below to advertise a discount on shirts,
DISCOUNT
Buy Two Shirts
Get 50% Off Third Shirt
Celia wants to buy three shirts, which were originally priced $56 each. The store will
discount the price of the third shirt and then apply a 7% tax to the total cost of all
three shirts. Including the tax, what will be the mean cost of each shirt? (Round your
answer to the nearest cent).
Including the tax, the mean cost of each shirt is $
Answer:
$49.93Step-by-step explanation:
Original cost = $56
Cost of 3 shirts:
3*$56 = $168Cost of 3 shirts with discount:
168 - 1/2*56 = 168 - 28 = $140Add tax:
$140*1.07 = $149.8Mean cost of each shirt:
$149.8/3 = $49.93find the images of the following under thr reflection aboit x_axies a(2,_3)
Answer:
that not a full question I cant answer that.
The number of boys is 3/5 of the number of girls. If there are 120 children all together, how many boys are there? PLEASE HELP ME!!!!!!!!
Answer:
72 boys
Step-by-step explanation:
120 * .60. That's how you solve it! Hope it helps!
Further explanation:
To get .60, you divide 3 by 5 which is .60
Then you multiply 120 times .60 and you'll get 72 which is 72 boys
Bonus: 120 - 72 = 48 girls!
Answer:
There are 45 boys.
Step-by-step explanation:
The best way to easily solvethis is by making equations, see below.
[tex]let \: b \: represent \: number \: of \: boys \\ let \: g \: represent \: number \: of \: girls[/tex]
[tex]b + g = 120 \\ b = \frac{3}{5} g[/tex]
Now we can subtract the secons equation from the first.
[tex]g = 120 - \frac{3}{5} g[/tex]
I'm also goong to multiply the equatipn by 5 to remove the fraction.
[tex]5g = - 3g + 600[/tex]
Now simplify
[tex]8g = 600 \\ g = 75[/tex]
Now we found out there are 75 girls. Now we insert this into our second equation to find how many boys there are.
[tex]b + 75 = 120 \\ b = 45[/tex]
Now we know there are 45 boys.
0.26÷1.56 ...........................................................................................
Answer:the answer is 0.16 in the calculator its 0.166666666667 but just take the first 3 numbers at thats your answer.
Step-by-step explanation: