Answers
Answer:
(-2,8)
Step-by-step explanation:
To solve by substitution, first isolate a variable in one of the equations. Then, substitute the value of the variable from that equation into the other equation, giving either the x or y value of the solution. Finally, substitute that answer back into one of the two equations, finding the other missing value.
1) For both of the equations, the variable y has already been solved for. So, we can choose to substitute whatever y equals in one equation for the y in the other equation. Any choice is fine - I chose to substitute -4x for the y in y = 3x + 14.
[tex](-4x) = 3x + 14\\-7x = 14\\x = -2[/tex]
2) Now that x has been solved for, substitute the value for the x in one of the equations. Any choice is fine here, too - I chose to substitute -2 in y = -4x:
[tex]y = -4(-2) \\y = 8[/tex]
3) Both the x and y value of the solution has been solved for. x = -2 and y = 8. Therefore, the solution is (-2,8).
Related Questions
HELP O WELL
Tom is also in Mr. Greene's class. One day Tom spent six hours studying. Using the class ratio of 3 to 2 from Mr. Greene's survey, which proportion can be used to find the number of hours, x, that Tom spent on the Internet? Hours on Internet Hours Studying 100 6 A. 3 2 B. 3 2 - 6 3 6 r 2 D. 2 6 3
Answers
Answer:
3/2 = x/6
Step-by-step explanation:
Answer:
l78vvvvvvvvvvvvvvv
Step-by-step explanation:
help me pls Use the }R I S E R U N or the Albebraic Formulas to find this slope of the graph .
Answers
Answer:
Stop cheating.
Step-by-step explanation:
You should have listened to your teacher when she was teaching the material. Read your textbook. Sucks to suck LOLL
Pls Answer Quickly! Pls show work so that I can understand
Answers
Answer:
2084, 1.1111Step-by-step explanation:
Q1
Given GP
4, -20, 100,...Common ratio is:
r = -20/4 = 100/-20 = -5Sum of 5 terms:
S₅ = 4( (-5)⁵ - 1)/(-5 - 1) = 2084Q2
Given GP
1, 1/10, 1/100, ...Common ratio is:
r = 1/10 : 1 = 1/100 : 1/10 = 1/10Sum of 5 terms:
S₅ = 1*((1/10)⁵ - 1)/((1/10 - 1) = 1.1111Calculate 95% of $1,350.
Answers
Answer:
1282.5
Step-by-step explanation:
Use the Distributive Property to expand 6(-4x + 3y).
Answers
Answer:
-24x + 18y
Step-by-step explanation:
6 x -4x = -24x
6 x 3y = 18y
The simplified expression is -24 x + 18y.
What is Distributive Property?The distributive property states that multiplying the sum of two or more addends by a number yields the same outcome as multiplying each addend separately by the number and combining the resulting products.
Given:
6(-4x + 3y).
Now, using Distributive Property
a x (b+ c)= a x b+ a x c
So, 6(-4x + 3y).
= 6 x (-4x) + 6 x 3y
= -24 x + 18y
Hence, the simplified expression is -24 x + 18y.
Learn more about Distributive Property here:
https://brainly.com/question/6276874
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PLZ HLP! You survey 72 randomly chosen students about whether they are going to attend the school play. Twelve say yes. Predict the number of students who attend the school.
210 students attending
522 adults attending
Answers
Answer: 35!
Step-by-step explanation: Good luck! I love your profile picture too haha
Parallel lines and m are intersected by lines and . The diagram below shows the
lines and the measures of some of the angles formed by the intersections of the
lines.
Lines , , and intersect at point . Based on the diagram, what is the value of ?
A. 40
B. 50
C. 60
D. 80
Answers
Answer:
C is the answer!
Step-by-step explanation:
Have a Great Day! ;) Mark me as brainliest!
25 - 7 = 3u
solve for u
Answers
Answer:
u=6
Step-by-step explanation:
18=3u
6=u
Answer:
U=6
Step-by-step explanation:
On a recent quiz, the class mean was 69 with a standard deviation of 4.8. Calculate the z score for a person who received score of 74. z score:
Answers
Answer:
1.04167
Step-by-step explanation:
Z -score formula is given as
z = (x-μ)/σ, where
x is the raw score = 74
μ is the population mean = 69
σ is the population standard deviation = 4.8
Z score = x - μ/ σ
= 74 - 69/4.8
= 1.04167
The z score for a person is given as 1.04167
40 POINTS IM BEING TIMED
Layla and Cayden are racing at the playground. The playground is rectangular and has a length of 82 meters and a width of 50 meters. Cayden will run around the entire perimeter of the rectangular playground while Layla will run diagonally across the playground twice. (She will end where she started). Cayden runs 3 meters per second and Layla runs 2 meters per second.
A: Who will finish first?
B: How much faster will that person's finish time be?
HELP PLEASEEEEEEEEEEEEEEEEEEEEEEE
FOR THE FIFTH TIME I ASKED THIS QUESTION ;-;
Answers
Answer:
(A.)Cayden will win
(B.) He'll win by 9 seconds
Step-by-step explanation:
Find the value of the parallelogram. The value of x is _?
Answers
Answer:
x is 115
Step-by-step explanation:
Because since one side of the square is 65 you add another 65 to the opposite side since there parrel to get 130, then you subtract 130 from 360 to get 230; finally you divide 230 by 2 and have 115 as your answer for x
Hope this hellps
Please give me the right answer and help, i’ll give brainliest❤️
Answers
Answer:
3:4
Step-by-step explanation:
Answer:
3:4
Step-by-step explanation:
To make a shade of paint called jasper green, mix 4 quarts of green paint with 2/3 cups of black paint. How much green paint should be mixed with 4 cups of black paint to make jasper green?
Answers
Answer:
9
Step-by-step explanation:
Please help
Which expression is equivalent to this polynomial expression?
(2x^5 + 3y^4)(-4x^2 + 9y^4)
A. -2x7 + 11x^5y^4 – x^2y^4 + 12y^8
B. -2x^10 + 11x^5y^4 - x^2y^4 + 12y^16
C. -8x^7 + 27y^8
D. —8x^7 + 18x^5y^4 – 12x^2y^4 + 27y^8
Answers
HELP PLZZZ HELPPPP??.!.!!.!.
Answers
Answer:
eoeoeoeoooeoeooeoeoeooeoeoooe
Step-by-step explanation:
hope this helped
What is an angle that is supplementary to AGF?
Answers
Answer:
CGD I believe.
Step-by-step explanation:
9514 1404 393
Answer:
∠AGC or ∠FGD
Step-by-step explanation:
∠AGF is part of two linear pairs. The other angle in the pair is supplementary to ∠AGF.
Point G is on line AD, so ∠FGD is a supplementary angle to ∠AGF.
Point G is on line FC, so ∠AGC is a supplementary angle to ∠AGF.
ANSWER QUICKLY!!!!!!
Answers
Answer:
It's A
Step-by-step explanation:
Assume the figure below is a rhombus:
If DE=16x-3, EF=9x+11, and DF=52, find HG
Answers
9514 1404 393
Answer:
HG = √165 ≈ 12.8
Step-by-step explanation:
All sides of the rhombus are the same length, so ...
DE = EF
16x -3 = 9x +11
7x = 14
x = 2
DE = 16(2) -3 = 29
Because the diagonals bisect each other, we have ...
HF = DF/2 = 52/2 = 26
We know side GF is 29, so ...
HG² + HF² = GF²
HG² = GF² -HF² = 29² -26² = 165
HG = √165 ≈ 12.8 . . . . rounded to tenths
please answer this question i have a test and need the answer ASAP
Answers
If you need an explanation let me know!
Please help me answer this
Explain you’re answer
Will give braisnlt
Answers
Answer:
One 8x10 photo costs $1.50.
Step-by-step explanation:
You can write two equations and use a system of equations.
Let w = price of 1 wallet-size photo.
Let n = price of 1 of 8x10 photo.
Basic package:
24w + n = 19.5
Deluxe package:
32w + 3n = 28.5
We have a system of equations:
24w + n = 19.5
32w + 3n = 28.5
Multiply both sides of the first equation by -3.
Rewrite the second equation below it and add the equations.
-72w - 3w = -58.5
(+) 32w + 3n = 28.5
---------------------------------
-40w = -30
w = -30 / -40
w = 0.75
24w + n = 19.5
24(0.75) + n = 19.5
18 + n = 19.5
n = 1.5
Answer: One 8x10 photo costs $1.50.
Figure ABCD is a parallelogram.
Parallelogram A B C D is shown. Angle B is (2 n + 15) degrees and angle D is (3 n minus 5) degrees.
What are the measures of angles B and D?
∠B = 55°; ∠D = 55°
∠B = 55°; ∠D = 125°
∠B = 97°; ∠D = 97°
∠B = 83°; ∠D = 97°
Answers
Answer:
A. ∠B = 55°; ∠D = 55°
Step-by-step explanation:
Hope this helps :)
The measures of angles B and D are (a) ∠B = 55°; ∠D = 55°
What is a parallelogram?A parallelogram is a shape whose opposite sides are parallel and congruent
The following is the step to determine the measures of angles B and D
We have:
B = 2n + 15
D = 3n - 5
The angles are opposite angles.
So, we have:
B = D
This gives
2n + 15 = 3n - 5
Collect like terms
3n - 2n = 15 + 5
n = 20
Substitute 20 for n in B = 2n + 15
B = 2 * 20 + 15
B = 55
Hence, the measures of angles B and D are (a) ∠B = 55°; ∠D = 55°
Read more about parallelograms at:
https://brainly.com/question/3851698
Help need this fast graphs
Answers
I hope you have a great day!
For the equation x-3y=12, what is x when y=8?
Answers
Answer:
x = 36
Step-by-step explanation:
x - 3y = 12
substitute y for 8
x - 3 * 8 = 12
x - 24 = 12
x = 12 + 24
x = 36
Answer:
lam not sure but l think x is 36
I don’t really get what to do here can u please help me?
Answers
Answer:
The coordinates for Q would be B. (2,4)
Step-by-step explanation:
On your X-Axis, take your finger and go across the lines until you reach the line that Q rests on. Then take your finger and go up the y-axis until you got A. Look at your X-Axis (2) and your y-axis (4), Q sits on point (2,4)
Answer:
B. (2,4)
Step-by-step explanation:
Hey! so for this one, the answer would be B.
This is because on a graph like this, you would always look at the two numbers that you are given that goes in the order of (x,y).
Start at the very center of the square, (0,0). You are now going to want to see where Q is. It is to the right of the horizontal line, so you know that the first number is going to be positive. You can see that the dot called Q is over the "2", so that means that the first number is going to be 2.
Now you have to see there Q is in comparison to the vertical line. You can see that it is higher than the 0 in the middle of the line, so you know that that line is going to be positive as well. You can see that Q is next to the "4", so you know that the second number is going to be 4.
Now you have to see which answer is (2,4) DO NOT MIX UP THE ORDER! THE ORDER MATTERS. So the answer should be in the form of (x,y) like I said before, or (2,4)
I hoped this helped!
100 Points
Directions: Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls to the ground. Think about the amounts of potential and kinetic energy the bowling ball has:
• as it sits on top of a building that is 40 meters tall.
• as it is half way through a fall off a building that is 40 meters tall and travelling 19.8 meters per second.
• as it is just about to hit the ground from a fall off a building that is 40 meters tall and travelling 28 meters per second.
Questions
(Score for Question 1: ___ of 7 points)
1. Does the bowling ball have more potential energy or kinetic energy as it sit on top of the building? Why?
Answer:
(Score for Question 2: ___ of 7 points)
2. Does the bowling ball have more potential energy or kinetic energy as it is half way through its fall? Why?
Answer:
(Score for Question 3: ___ of 7 points)
3. Does the bowling ball have more potential energy or kinetic energy just before it hits the ground? Why?
Answer:
(Score for Question 4: ___ of 4 points)
4. What is the potential energy of the bowling ball as it sits on top of the building?
Answer:
(Score for Question 5: ___ of 4 points)
5. What is the potential energy of the ball as it is half way through the fall, 20 meters high?
Answer:
(Score for Question 6: ___ of 3 points)
6. What is the kinetic energy of the ball as it is half way through the fall?
Answer:
(Score for Question 7: ___ of 3 points)
7. What is the kinetic energy of the ball just before it hits the ground?
Answer:
Answers
please help, ty (will give brainliest)
Answers
Answer:about 19
Step-by-step explanation:
The number isn’t whole but its close to that
Please I need help
I will mark you brainliest
Answers
Answer:
60ft
Step-by-step explanation:
Using the formula shown a^2 + b^2 = c^2
5 ^2 + 12^2 = c^2
25 + 144 = c^2
169 = c^2
Take the square root of both sides:
C = 13
WILL GIVE BRAINIEST AND 100 POINTS TO CORRECT ANSWER
A parallelogram is shown below:
Part A: What is the area of the parallelogram? Show your work. (5 points)
Part B: How can you decompose this parallelogram into two triangles? If this parallelogram was decomposed into two triangles, what would be the area of each triangle? (5 points)
Answers
Answer: part a: area = bh part b: split it on its diagonals
Step-by-step explanation:
convert the decimal fraction 0.125 to percentage
Answers
Answer: 12.5% is the answer
Explanation:
Ava and her children went into a movie theater and she bought $48 worth of drinks
and candies. Each drink costs $4 and each candy costs $3. She bought 2 more candies
than drinks. Graphically solve a system of equations in order to determine the
number of drinks, x, and the number of candies, y, that Ava bought.
Answers
Answer:
She got 12 drinks
and 14 candies!
The number of candies is 24 and number of drinks are 24.
What is linear equation?An equation between two variables that gives a straight line when plotted on a graph.
Given that, Ava and her children went into a movie theater, and she bought $48 worth of drinks and candies. Each drink costs $4 and each candy costs $3. She bought 2 more candies than drinks.
According to question,
4x+3y = 48
x-y = -2
Solving the equation graphically,
4x+3y = 48
Put x = 0, y = 16 (0, 16)
Put x = 12, y = 0 (12, 0)
x-y = -2
Put x = 0, y = 2 (0, 2)
Put x = -2, y = 0 (-2, 0)
Plotting the graph, we get, (attached)
The lines of the equations are intersecting at (6, 8)
Therefore, x = 6 and y = 8
Hence, the number of candies = 8*3 = 24 and number of drinks = 4*6 = 24
For more references on linear equations, click;
https://brainly.com/question/11897796
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