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uranmaximum [27]
4 years ago
14

20 points math please help fast!!

Mathematics
1 answer:
Dafna1 [17]4 years ago
4 0
The answer is c
formula for slope=y2-y1/x2-x1
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If the following system of equations was written as a matrix equation in the form AX = C,? and matrix A was expressed in the for
LenaWriter [7]
The given equations are
5x + 7y = 7
3x - 2y = 9

As a matrix equation,
A = [5   7
       3 -2]

X = [x
        y]

C = [7
       9]
That is
a =5, c=7; and b=3, d=-2

a - b + c + d = 5 - 3 + 7 + (-2) = 7

Answer: 7
4 0
3 years ago
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Evaluate the expression<br> x+y3/5+ x²y when x = 3 and y = -2
olga55 [171]
8.8

I plugged in the calculator for you:)
8 0
3 years ago
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Write down the turning point of the graph y=x^2 - 8x + 22
Sloan [31]

Answer:

y=6

Step-by-step explanation:

Differentiate the equation

dy/dx=2x-8

Find the value of x in equation form

2x-8=0

x=8/2=4

Now x=4 is the line of symmetry or the parabola of the quadratic equation.

Plug back x=4 into the equation to find the turning point(minimum value)

y=(4)²-8(4)+22

y=16-32+22

y=6

7 0
3 years ago
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X+6 is less than or equal to 12+2x
Scilla [17]
X+6≤12+2x
x-2x≤12-6
-x≤6
-x/-1≤6/-1
because we divide by a negative number, we have to flip the sign of inequality.
x≥-6

Answer: x≥-6

4 0
4 years ago
If a(2x-3)=bx+5 then the solution for x in terms of a and b is
Fudgin [204]

Answer:

x=(3a+5)/(2a-b)

Step-by-step explanation:

first we distribute the a to the 2x and -3

2ax -3a=bx+5

we move the -3a over by adding 3a

2ax=bx+5+3a

then we move the bx over

2ax-bx=5+3a

we can now group the left side like this

x(2a-b)=5+3a)

to find x all we must do is divide both sides by (2a-b)

x=(3a+5)/(2a-b)

7 0
3 years ago
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