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Lisa [10]
3 years ago
14

Please please please please please please thank please please please help me please ASAP

Mathematics
1 answer:
atroni [7]3 years ago
4 0

Answer:

4

Step-by-step explanation:

3x^2 + 2(y-1)/x+y^2

3(4)^2 + 2(3-1)/4+3^2

3x16+2x2/4+9

48+4/13

52/13

4

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What is the solution to the system of equation 2x-y=7<br> Y=2x+3
Veronika [31]
<span><span>4x - y = -4</span>
<span><span>-y = -4 - 4x (subtract 4x from each side)
y = 4 + 4x (divide by -1)
y = 4x + 4 (commutative property of addition to get the x-value in front). 

Now we must plug what we have gotten y to equal into the other equation. If we try to plug what we have rearranged back into the original equation, we don't get anywhere. 

2x - y = -7
2x - 1(4x + 4) = -7 (substitution)
2x - 4x - 4 = -7 (distributive property with -1)
-2x - 4 = -7 (combine like terms)
-2x = -3 (add 4 to each side)
x = 3/2 (divide by -2). 

You</span></span><span>2x-y=7
Y=2x+3</span><span> have just solved for x! We can now plug what we have found for x into either equation to get what y equals. (If this is truly a system of linear equations, then it will not matter which one we use.) 

2(3/2) - y = -7 (substitution)

6/2 - y = -7 (multiplication)
3 - y = -7 (division)
- y = -10 (subtraction)
y = 10 (division) 

You have just found y! As a point, the solution to this system is (3/2, 10) with the x-coordinate first and the y-coordinate second. If we plug x and y into both equations, we will find that they will make the equations true. This is how we check ourselves. Using both equations: 

4x - y = -4
4(3/2) - 10 = -4 (does the left half equal -4?)
12/2 - 10 = -4
6 - 10 = -4
-4 = -4 (it does); 

2x - y = -7
2(3/2) - 10 = -7
3 - 10 = -7
-7 = -7. </span></span>
7 0
3 years ago
Alex lives 500 yards from the park. How many inches does Alex live form the oark
bija089 [108]

Answer:18,000

Step-by-step explanation:

There is a yard = inches converter on google that can help you.

8 0
3 years ago
Read 2 more answers
I need help please ....
Kazeer [188]
The correct answer would be A. x=20/3 because it is proportional.<span />
6 0
3 years ago
Evaluate the expression.
Alekssandra [29.7K]

Step-by-step explanation:

9.(12/3)²

9.(144/9)

[The 9 in numerator and the 9 in denominator can be cancelled]

144

the answer is 144

Please mark me as brainliest

4 0
2 years ago
What is the area of the triangle
Stels [109]

Answer:

ummmm

Step-by-step explanation:

8 0
3 years ago
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