Solve the system of linear equations by elimination x−2y=−7 3x+2y=3
Answers
Explanation: Substitute 3 for y x=2x -7
x=(2)(3)-7
The solution of this system of linear equations is (3,13)
What is the solution to a linear equation?The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.
Given here: x−2y=−7 & 3x+2y=3
Thus solving these two equations we get -8y=-24 or y=3
Therefore x=13
Hence, The solution of this system of linear equations is (3,13)
Learn more about linear equations here:
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Related Questions
Which of the following uses the distributive property in generating equivalent expressions?
F) 3 + 2x + 5x = 3 + x(2 + 5) = 3 + x(7) = 3 + 7x
G) 3+ (2 + x) = (3 + 2) + x = 5 + x
H) 4 x 14+ 5+ 3x = (1 + 5) + 3x = 6 + 3x
J) 5+ (6 + -6) + 2x = 5 + 0 = 2x = (5 + 1) + 2x = 5 + 2x
Answers
Answer:
F
Step-by-step explanation:
Combine the like terms: 4g + 3 - 2g
Answers
Answer:
2g+3
Step-by-step explanation:
Answer:
2g+3
Step-by-step explanation:
Subtract 2g from 4g
HELP PLEASE?????????????????
Answers
Select all the sums that are positive.
A. –5 + (–2)
B. 5 + (–2)
C. –3 + 4
D. 0 + (–3)
E. –2 + 4
Answers
Answer:
The positive sums are:
B. 5 + (–2)
C. –3 + 4
E. –2 + 4
Step-by-step explanation:
We can simply observe the sums to conclude that the sum will be positive or negative.
A. –5 + (–2)
We can see that both numbers are negative, the sum of two nu=egative numbers is also negative.
-5+(-2) = -5-2 = -7
B. 5 + (–2)
The number with greater magnitude is positive so the sum will also be positive.
5 + (–2) = 5-2 = 3
C. –3 + 4
The number with greater magnitude is positive so the sum will also be positive.
-3+4 = 1
D. 0 + (–3)
The number with greater magnitude is negative so the sum will also be negative.
= 0-3 = -3
E. –2 + 4
The number with greater magnitude is positive so the sum will also be positive.
-2+4 = 2
Hence,
The positive sums are:
B. 5 + (–2)
C. –3 + 4
E. –2 + 4
nick started 60% of his team's football games this year he started in a total of 12 games
Answers
Answer:
20
Step-by-step explanation:
There are 216 blueberries in 6 baskets. What is the unit rate of blueberries per basket?
Answers
Answer:
it might be 36
Step-by-step explanation:
you're going to want to say 216/6 so it will definitely be an integer of some positive value
How many thirds are in 8 kilograms
Answers
Can anyone solve this im not good at math
Answers
Answer:
18, 27, 19, 27, 18
Step-by-step explanation:
I did the test
Help I don’t get this please I need help
Answers
Answer:
There is no question.
Step-by-step explanation:
10, 4. -2, -8 in an explicit formula
Answers
Answer:
16 - 6n
Step-by-step explanation:
10 , 4 , -2 , - 8 .....
This is arithmetic sequence
first term = 10
Common difference = 2nd term - first term
d = 4 - 10
d = -6
nth term = a₁ + (n -1)d
= 10 + (n - 1)*(-6)
= 10 + n*(-6) - 1*(-6)
= 10 - 6n + 6
= 10 + 6 - 6n
= 16 - 6n
In the given figure, ∡X>∡K. Prove that WY>JL.
Answers
Answer:
<K is smaller then <X, making JL less then WY
Step-by-step explanation:
Example 24 In a school there are 20 teachers who teach mathematics or physil
these, 12 teach mathematics and 4 teach both physics and mathematics. How Ex
teach physics ?
Answers
Answer:
The number of teachers who teach physics n(P) = 12
Step-by-step explanation:
Step(i):-
Given that the number of teachers who teach mathematics or physics
n(MUP) = 20
Given that the number of teachers who teach mathematics
n(M) = 12
Given that the number of teachers who teach both mathematics and physics
n(M∩P) = 4
Step(ii):-
By using n(A∪B) = n(A) + n(B) - n(A∩B)
n(M∪P) = n(M) +n(P) - n(M∩P)
20 = 12 + n(P) - 4
20 -12 +4 = n(P)
n(P) = 12
Final answer:-
The number of teachers who teach physics n(P) = 12
1. What is a function? Give an example of a function and explain why it is a function
2. For the equation y = 7x - 2, what is the rate of change? Explain what that rate of change means.
Answers
Answer:
a function is :a relation from the set of inputs to a set of possible outputs where each input is related o exactly one output
or a function is: a function is an equation that has only one answer for y for every x
Which number line represents the solution of x + 3 > 2?
Answers
Answer:
x > -1
(-1, infinity)
Step-by-step explanation:
skew-symmetric 3 x 3 matrices form as subspace of all 3 x 3 matrices and find a basis for this subspace.
Answers
Answer:
a) ∝A ∈ W
so by subspace, W is subspace of 3 × 3 matrix
b) therefore Basis of W is
={ [tex]{\left[\begin{array}{ccc}0&1&0\\-1&0&0\\0&0&0\end{array}\right][/tex] [tex],\left[\begin{array}{ccc}0&0&1\\0&0&0\\-1&0&0\end{array}\right][/tex] [tex],\left[\begin{array}{ccc}0&0&0\\0&0&1\\0&-1&0\end{array}\right][/tex]}
Step-by-step explanation:
Given the data in the question;
W = { A| Air Skew symmetric matrix}
= {A | A = -A^T }
A ; O⁻ = -O⁻^T O⁻ : Zero mstrix
O⁻ ∈ W
now let A, B ∈ W
A = -A^T B = -B^T
(A+B)^T = A^T + B^T
= -A - B
- ( A + B )
⇒ A + B = -( A + B)^T
∴ A + B ∈ W.
∝ ∈ | R
(∝.A)^T = ∝A^T
= ∝( -A)
= -( ∝A)
(∝A) = -( ∝A)^T
∴ ∝A ∈ W
so by subspace, W is subspace of 3 × 3 matrix
A ∈ W
A = -AT
A = [tex]\left[\begin{array}{ccc}o&a&b\\-a&o&c\\-b&-c&0\end{array}\right][/tex]
= [tex]a\left[\begin{array}{ccc}0&1&0\\-1&0&0\\0&0&0\end{array}\right][/tex] [tex]+b\left[\begin{array}{ccc}0&0&1\\0&0&0\\-1&0&0\end{array}\right][/tex] [tex]+c\left[\begin{array}{ccc}0&0&0\\0&0&1\\0&-1&0\end{array}\right][/tex]
therefore Basis of W is
={ [tex]{\left[\begin{array}{ccc}0&1&0\\-1&0&0\\0&0&0\end{array}\right][/tex] [tex],\left[\begin{array}{ccc}0&0&1\\0&0&0\\-1&0&0\end{array}\right][/tex] [tex],\left[\begin{array}{ccc}0&0&0\\0&0&1\\0&-1&0\end{array}\right][/tex]}
Sue and Saleem are marking exam papers. Each set takes Sue 52 minutes and Saleem 1 hour. Express the times Sue and Saleem take as a ratio in its simplest form?
Answers
Answer:
52:60=26:30=13:15
......
What is the area of the figure composed of a parallegram, a square, and a rectangle
Answers
Answer:
126 in²
Step-by-step explanation:
That's what the answer was for me :)
Hope this helps!!
Please just tell me what numbers to put in each box! Thanks! Best answer gets brainliest!
Answers
Answer:
The points are (5,1) which are (x,y)
That being said the 1=3(5)+2
1=17
Step-by-step explanation:
A store can buy 3 pairs of shorts for $10 . How much would the store pay for a dozen
Answers
Answer:
$40
Step-by-step explanation:
12 ÷ 3 = 4
4 × 10 = 40
So, the answer is $40.
Please mark as Brainliest!!!what’s the answer for each question? number 1 and number 2 are separate.
Answers
Answer:
1. is 38 and 69 degrees i think
2. is 90 degrees bc it is a 90 degree angle and 90 + 90 = 180 which all interior angles equal.
8 is 60% of what number
Answers
Answer:
48
Step-by-step explanation:
im not very sure but double check
Answer:
its 13.33
Step-by-step explanation:
i know i already commented but i wanted to show how i got it so you can kind of get it
8/60 = .133333333
.133333333 x 100 = 13.33333 (rounded = 13.33)
Step
Given
Work
1
2 +1-(6= 1)
2+1 - (12)
2+ (12)
1
2
4
3
2 + 3
4
5
1
Answers
Answer:
25
13442145
1352453
Step-by-step explanation:
The temperature at 6:00 a.m. was -12°F. The temperature increased by
1/2°F each hour for 6 hours. What was the temperature, in degrees Farenheit, at noon?
Answers
Answer:
600
Step-by-step explanation:
Answer:
-9
Step-by-step explanation:
-12°F + 3 =-9
1/2 * 6 = 3
Confused on my sons math homework. We are subtracting three digit numbers. Please help.
Answers
Answer:
863-7=856, 870-30=840, 900-55=845
Step-by-step explanation:
I think this may be the answer that is if you are to change the equations to subtraction problems, I can't see the picture so it's hard to answer.
Have a great day!
HOW TO GET ANSWERS ON KAHN ACADEMY *NOT CLICKBAIT*
so first thing you want to do is turn off your wifi on your computer then click hint and then find the answer and remember it. then you want to hit ctrl + shift + i at once then you have to the two arrows pointing to the right like this: >> and click on applications once you are there click on local storage then click on the things under local storage and delete them then you go back to kahn and you will have the anwser :))
Answers
thank youuuuuuuuuuuuuuuu!!!!
what is...
18.75÷2.5=
show your work.
Answers
Answer:
7.5
2.5√18.75 -
18.75
7.5
2.5√18.75
Step-by-step explanation:
Select all the ways that describe the graph of the function in interval 2.
Answers
Answer:
Options (2) and (3)
Step-by-step explanation:
Slope of line segment is given by the formula,
Slope = [tex]\frac{\text{Rise}}{\text{Run}}[/tex]
Here, the line given in the graph has the Rise as negative (Since, segment is slanting down) and Run as positive.
Therefore, slope of the segment is negative which describes that the function is decreasing in the interval 2.
Options (2) and (3) will be the correct options.
Quadrilateral ABCD has the following vertices:
A(-3,0)
B(7,2)
C(1,-4)
D(-9,-6)
Is quadrilateral ABCD a parallelogram, and why?
Answers
Answer: yes
Step-by-step explanation:
Answer:
yes because AB II CD and BC II AD
Step-by-step explanation:
Quadrilateral ABCDABCDA, B, C, D has the following vertices:
A(-3,0)A(−3,0)A, left parenthesis, minus, 3, comma, 0, right parenthesis
B(7,2)B(7,2)B, left parenthesis, 7, comma, 2, right parenthesis
C(1,-4)C(1,−4)C, left parenthesis, 1, comma, minus, 4, right parenthesis
D(-9,-6)D(−9,−6)D, left parenthesis, minus, 9, comma, minus, 6, right parenthesis
Is quadrilateral ABCDABCDA, B, C, D a parallelogram, and why?
I got it right on khan academy
A manufacturer has 7,310 yards of material to make comforters.
If each comforter requires 8.5 yards of material, how many
comforters could be made?
Answers
Answer:
860
Step-by-step explanation:
n over 4=1.2 answer me lol
Answers
Answer:
N = 5
Step-by-step explanation:
Answer:
n=5
Step-by-step explanation: