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krek1111 [17]
3 years ago
12

Solve the system of linear equations by graphing. y=-4x+3 4x-2y=6

Mathematics
2 answers:
Gnom [1K]3 years ago
5 0
Substituting equation 1 in equation 2, we get:

4x-2(-4x+3)=6
4x+8x-6=6
4x+8x=6+6
12x=12
x=1

Replace x=1 in equation 1, we get:

y = -4(1)+3
y = -4+3
y=-1
Otrada [13]3 years ago
4 0

Answer:

x=1, y= -1

Step-by-step explanation:

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Doss [256]
Hi.

Please note that I haven't done much algebra.

4 more = 4 +

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So far we have 4 + 2n

Since it's an equation, we are going to know what it equals. In the problem, we find out that it's 11. So the equation looks like this:

4 + 2n = 11

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I believe n = 3.5
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3 years ago
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zaharov [31]

Answer:

45

Step-by-step explanation:

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3 years ago
Which of the following is a solution of x2 + 2x + 4?
RideAnS [48]

Answer:

option-D

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we are given

x^2+2x+4

Let's assume it is equal to 0

x^2+2x+4=0

We can use quadratic formula

Suppose, we are given quadratic equations as

ax^2+bx+c=0

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

we can compare and find a,b and c

a=1 , b=2 , c=4

now, we can plug values

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x=\frac{-2\pm \sqrt{2^2-4\cdot \:1\cdot \:4}}{2\cdot \:1}

now, we can simplify it

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6 0
3 years ago
Read 2 more answers
2x - 5y = 4<br> 3x - 7y = 5
VMariaS [17]

Answer:

(-3,-2)

Step-by-step explanation:

2x-5y=4

3x-7y=5

solve the equation

x=2+5/2y

3x-7y=5

substitute the value of x into an equation

3(2+5/2y)-7y=5

multiply 3 to 2. and. 3 to 5/2y

6+15/2y-7y=5

minus 6 to 5 and. add 15/2y to -7y

-1/2y=1

divide both sides by -1/2

y= -2

substitute the value of -2 into an equation

x=2+5/2•(-2)

multiply 5/2 to -2

x=2+-5

add but since 5 is negative then subtract the numbers

x= -3

combine y= -2 and x= -3 as a point

So the answer is (-3,-2)

3 0
3 years ago
EASY 5 POINTS REALLY NEED HELP RN!!!! Which expression finds the length of side x in this right triangle?
ArbitrLikvidat [17]
Use Pythagoras:


x² = (8.5)² + (5)²


x = √[(8.5)² + (5)²]
3 0
3 years ago
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