Answer:
A
Step-by-step explanation:
this is also -31/24 or -1 7/24 in mixed number form
Graham graphs the following system of equations to determine its solution.
2x + 4y = 12
2x - y = 2
What is the correct solution?
Enter your answer by filling in the boxes.
(__,__)
ASAP plz
Answer: (2,2)
Step-by-step explanation:
I'm going to use substitution to solve this:
First, I use the second equation to solve for y in terms of x.
2x - y = 2
-y = 2 - 2x
y = 2x - 2
Then, I plug the value for y into the first equation:
2x + 4y = 12
2x + 4(2x - 2) = 12
2x + 8x - 8 = 12
10x - 8 = 12
10x = 20
x = 2
Now that we have x, we can plug it into either equation (I used the first) to get the value for y:
2x + 4y = 12
2(2) + 4y = 12
4 + 4y = 12
4y = 8
y = 2
We get the point (2,2) as a solution.
Note: This is the point where both lines intersect.
After solving the equation, the value of for the points x and y are (2, 2).
What is an equation?Equations are mathematical expressions that have two algebra on either side of an equal (=) sign. The expressions on the left and right are shown to be equal to one another, demonstrating this relationship. L.H.S. = R.H.S. (left-hand side = right side) is a fundamental simple equation.
As per the given equation in the question,
2x + 4y = 12 (i) and
2x - y = 2 (ii)
Solve the value for y,
5y = 10
y = 10/5
y = 2
Substitute y=2 in equation (i)
2x + 4(2) = 12
2x = 12 - 8
x = 4/2
x = 2
Therefore, the point is (2, 2).
To know more about Equation:
https://brainly.com/question/14686792
#SPJ5
Given the set of test scores: 42, 72, 74, 78, 80, 80, 85, 88, 92. If the outlier is removed, which statement is true? Select all that apply.
Choose all that apply:
The standard deviation decreases.
The mean increases.
The median decreases.
The range increases.
Answer:
Standard deviation decreases and mean increases
Step-by-step explanation:
The test scores are:
42, 72, 74, 78, 80, 80, 85, 88, 92
Mean = (42 + 72 + 74 + 78 + 80 + 80 + 85 + 88 + 92)/9 = 76.77
Median is 5th term which is 80
Range is highest score - lowest score = 92 - 42 = 50
Standard deviation from an online calculator gives 13.69
Now,we want to know what happens to those values when the outlier is removed. The outlier in this case is 42 because it is not consistent with other scores which range from 72 - 92.
Thus,the new set of scores are;
72, 74, 78, 80, 80, 85, 88, 92
New Mean = (72 + 74 + 78 + 80 + 80 + 85 + 88 + 92)/8 = 81.125
New Median will be the average of the 4th and 5th term which is (80 + 80)/2 = 80
New Range = 92 - 72 = 20
New Standard deviation from an online calculator gives 6.39
From the comparison above when the outlier is removed, we can say that;
- Mean increases
- remains the same
- Range decreases
- standard deviation decreases
Please solve this problem if u are brainliest
Answer:
Step-by-step explanation:
2. 3x-1/3 = 5
+1/3 +1/3
___________-
3x= 5 1/3
÷3 ÷3
__________________
x=1.77777777778
5. 3x-9=5x-3
+3 +3
_____________-
3x-6=5x
-3x -3x
_______________-
-6=2x
÷2 ÷2
______________-
-3=x
8. 3x-2x=8 ( I crossed multiplied btw)
x=8
Hope this helps ∞<3
I need the answer if possible
Answer:
Move each point 2 left then 3 up then connect the dots
Step-by-step explanation:
Thank you guys have been so helpful!
Tell me what your favorite color.
Write the equation in slope-intercept form.
6x + 9y = 27
Answer:
y=-2/3x+3
Step-by-step explanation:
First subtract 6x from both sides and make it 9y=-6x+27
Secondly, divide both sides by 9 making the equation y=-2/3x+3
Answer:
y = -2/3x + 3
General Formulas and Concepts:
Pre-Algebra
Equality PropertiesAlgebra I
Standard Form: Ax + By = C
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
[SF] 6x + 9y = 27
Step 2: Rewrite
Find slope-intercept form.
Subtract 6x on both sides: 9y = -6x + 27Divide 9 on both sides: y = -2/3x + 3Identify the variable in the following situation. Mr. Gopal goes to the store and has 25 dollars. He has to buy some candy bars for 10 dollars total. How water bottles can he buy with his remaining money if each water bottle costs 5 dollars
Answer:
3 water bottles
Step-by-step explanation:
25-10=15
15/5=3
9 7/8 - ( -2 4/5 - 1/2)
Answer:
9 7/8 - ( -2 4/5 - 1/2) = 13.175
Step-by-step explanation:
Hope this is correct and helps.
will give 50 points!
Torren deposits $4500 in an account earning 2% interest, compounded annually. The equation that represents this situation is
A(n)=4500(1+0.02)^n-1
How much will he have in the account at the beginning of year 8? Round your answer to the nearest dollar
A. $5169
B. $16,124
C. $32,130
D.$5272
Answer:
the answer is D
Step-by-step explanation:
hopes it helped^^
Then she needs to find her "heart rate reserve" h by subtracting her average resting heart rate
r from her maximum heart rate m. Write an equation she can use.
Answer:
What this makes no sense
Step-by-step explanation:
help then you got them brains!
Answer:
its a
Step-by-step explanation:
8 divided by 1.6 is 5 , have a good day <3
make sure to write the (#,#)
Answer:
Oh, it's (-1,-1)
Once you graph both lines, you find the point of intersection and they both intersect at point (-1,-1)
If you have any more questions let me know! :)
Step-by-step explanation:
The answer is in the image.
HURRY PLEASE!!
Which of these could be the transformation? Choose all that are correct.
A reflection across the line x = 1
A reflection across the line y = 1
A translation 2 units to the left, and then a reflection across the y -axis
A translation 2 units to the right, and then a reflection across the y -axis
A reflection across the y -axis, and then a translation 2 units to the right
A rotation of 180° about the point (1,4)
Susie has a bag with 9 hair pins, 6 pencils, 2 snacks, and 5 books. What is the ratio of books to pencils?
Answer:
5:6 5books to 6 pencils
Answer:
5:6, 5 to 6 or 5/6
eremy works two jobs. He makes $8/hr working at a deli and $12/hr working for a landscaper. Let x represent the number of hours he works at the deli, and let y represent the number of hours he works for the landscaper. What do the solutions of the inequality represent?
combinations of the hours he can work at the two jobs and earn at least $300
combinations of the hours he can work at the two jobs and earn at most $300
combinations of the hours he can work at the two jobs and earn less than $300
combinations of the hours he can work at the two jobs and earn more than $300
Answer:
A.) combinations of the hours he can work at the two jobs and earn at least $300
Step-by-step explanation:
Answer:
A.
Step-by-step explanation:
Jonas runs A store that sells guinea pigs he wants to ensure that he has more than 1 pound of dry food for every five guinea pigs he has in the store he currently has 8 pounds of dry food and wants to know how many guinea pigs can he have in the store right and solve the inequality to solve the problem what is the solution to the inequality
Answer:
x ≤ 40
Step-by-step explanation:
Pounds of food : number of guinea pigs
1 pound : 5 guinea pigs
8 pounds : x guinea pigs
Where,
x = number of guinea pigs at 8 pounds of food
Inequality:
1 : 5 ≤ 8 : x
1/5 ≤ 8/x
Cross product
1*x ≤ 5*8
x ≤ 40
The solution to the inequality is
x ≤ 40
Answer:
B :)
Step-by-step explanation:
can anyone help me with maths please?
#surfacearea
Answer:
773 or 278.5 (if it only wants the sides the pic shows)
Step-by-step explanation:
13*5=65
65/2=32.5 (since it is a triangle you by 2)
12*9=108
108/2=54
15*20=300 (it is a square so you leave it)
you do it on the other sides that you can't see in the pic.
Add all the numbers together: 32.5+32.5+54+54+300+300 or 32.5(2)+56(2)+300(2)=773
Hope this helps!
What is the slope of this line?
A. 2
B. -1/2
C. 1/2
D. -2
what sign makes this comparison true?
> OR < (less than or greater than)
-9/10 -7/10
Answer:
greater than because that is what it is your welcome
16.8 is 10% of what number? Someone help TWT
Answer:
168
Step-by-step explanation:
16.8 = 10%
x = 100%
To get to 100%, you have to multiply 10 by ten and 16.8 by 10. Like this:
16.8 = 10% original equation
16.8 (10) = 10% (10) * both sides by 10
168 = 100% simplify
:3))
Answer:
168 :)
Step-by-step explanation:
16.8 is 10% of 168
I hope this helps, have a nice day/night, much love, xo, nm <3
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. In a particular region of a national park, there are currently 330 deer, and the population is increasing at an annual rate of 11% a. Write an exponential function to model the deer population in terms of the number of years from now. B. Explain what each value in the model represents . . Predict the number of deer that will be in the region after five years. Show your work.
Answer:
Formula : V = I (1 + R)^T , Deers after 5 years ≈ 556
Step-by-step explanation:
Exponential formula for final value 'v' - for initial value 'i' at growth rate 'r' for a period of time 't'
V = I (1 + R)^T
As per given deer case, I = 330 & R = 11% = 0.11
V = 330 ( 1 + 0.11 )^t
Predicted deers after 5 years, V = 330 (1.11)^5
330 x 1.685 = 556.05
If triangle ABC has the following angle measurements, what is the set-up to solve for x?
∠A= 4x - 17
∠B= 3x + 8
∠C= x + 13
4x - 17 + 3x + 8 + x + 13 = 180
4x - 17 = 3x + 8 + x + 13
4x - 17 - 3x + 8 - x + 13 = 180
4x - 17 - 3x + 8 - x + 13 = 180
Answer:
A
Step-by-step explanation:
The answer is the first one. We've used that in previous questions.
B is wrong. It needs to be equal to something (180 in this case). B is also saying that the first angle is = to the sum of the other two. Not so.
C is wrong. the third angle's x term has to be plus.
D has the same problem.
PLS HELP ASAP! DUE IN 2 HOURS!!!!
If not educationally answered, I will REPORT you.
Solve the given system of equations by using an algebraic method that eliminates one of the variables. (SHOW ALL WORK.) :
Question 5:
2x + 3y = -4
5x + 2y = 1
Question 6:
5c + 7d = 39
6c - 5d = 20
REMEMBER TO SHOW ALL WORK!
Answer:
I have done it I hope it's the right answer
It is given that set W = { x, y, z).
What is the subset of set W?
Answer:
Please check the explanation.
Step-by-step explanation:
Given the set W = {x, y, z}
If there are n elements in a set, then are 2ⁿ subsets.
As there are 3 elements in a set, then are 2³ or 8 subsets.
so
W = {x, y, z} has 8 subsets.
They are:
∅, {x}, {y}, {x}, {x, y}, {x, z}, {y, z}, and {x, y, z}
Please note that any subset of the set W = {x, y, z} contains all the elements which are also the elements of the set W = {x, y, z}Heyy I need help with these two questions for math before he emails my mom saying i didnt do my work bc my brain isnt working properly rn
Answer:
4 pieces and B
Step-by-step explanation:
Answer: The answer to the first one is probably 8.
Step-by-step explanation:
I just read the problem and saw it as a division problem. I then divided 4/6 by 1/12. I ended up with 8, if this is wrong i'm incredibly sorry.
Which of the following equations shows the commutative property of multiplication?
A.8x0=0
B.3 x 11 = 11 x 3
C.7 + 7 + 7 = 3 x 7
D.(4 x 2) x1 = 4 x (2 x 1)
Answer: D.(4 x 2) x1 = 4 x (2 x 1)
what’s the difference between point A (3,4) and B (-1,4) on a coordinate plane?
Answer:
the difference between them is letter b would be on the left side in the negative and a is in the positive
Step-by-step explanation:
hoped this helped lmk if it did
answer for brainliest pls
Answer:
The answer is C. 18 units
Step-by-step explanation:
Please mark brainliest
Hope this helps!
Answer:
C) 18 square units
Step-by-step explanation:
There are many ways to go about solving this. You could divide it into two triangles with a middle section. But it might be easier just to count the squares:
whole squares = 12
half squares = 4 (which equals 2)
3/4 square = 4
1/4 squares = 4
(add the 3/4 and 1/4 squares to equal 4)
12+2+4=18
If the point (x, y) is in Quadrant I, which of the following must be true?
Answer:
Both numbers (the x, and the y) must be positive
Step-by-step explanation:
The sum of eleven and three times a number is equal to twenty six
Answer:
3x5+11 equals 26
Step-by-step explanation: