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Ilya [14]
3 years ago
13

I don’t know how to find the slope

Mathematics
1 answer:
STatiana [176]3 years ago
4 0

Answer:

The change in the y over the change in the x

Step-by-step explanation:

find the change in x so +4

and the change in they y so 3

3/4 and divide that

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Find the equation of the line passing through points (6,-3) and (-2,3)
Eduardwww [97]
3/4 I’m pretty sure hejjejwiwiwjwnnsn
3 0
3 years ago
Solve with cramer's rule x+2y+3z=11, 2x+y+2z=10, 3x+2y+z=9
nalin [4]

Answer:

x = 2 , y = 0 , z = 3

Step-by-step explanation:

Cramer's rule is a rule through which we can find the solution of linear equation.

we have the three linear equations as

x+2y+3z=11

2x+y+2z=10

3x+2y+z=9

AX=B  

A: coefficient matrix

X= unknown vectors(x,y,z)

D = values of the linear equation (11 , 10 , 9)

now we find the determinant of the given linear equation

determinant of the matrix will be

A = \left[\begin{array}{ccc}1&2&3\\2&1&2\\3&2&1\end{array}\right]  = 1(1-4) - 2(2-6) + 3(4 - 3)

                    = 1(-3) - 2(-4) + 3(1)

                    = -3+8+3 = 8

also D\neq 0

so the determinant is Non zero we can apply Cramer's rule

we will be replacing the first column of the coefficient matrix A with the values of D

by replacing the first column we will get the value of the variable 'x'

Dx =  \left[\begin{array}{ccc}11&2&3\\10&1&2\\9&2&1\end{array}\right]   = 11(1-4) -2(10-18) + 3(20-9) = -33+16+33 = 16

x = \frac{Dx}{D}  = \frac{16}{8} = 2

similarly

Dy = \left[\begin{array}{ccc}1&11&3\\2&10&2\\3&9&1\end{array}\right] = 1(10-18) -11(2-6) + 3(18 -30) = -8 +44 -36 = 0

y = \frac{Dy}{D} = 0

Dz= \left[\begin{array}{ccc}1&2&11\\2&1&10\\3&2&9\end{array}\right] = 1(9 - 20) -2(18 - 30) + 11(4 -3) = -11 +24 +11 = 24

z = \frac{Dz}{D} = \frac{24}{8} = 3

so we have the solution as

x = 2 , y = 0 , z = 3

Therefore the solution for the given linear equations is (2,0,3).

3 0
3 years ago
Which function is odd?
ddd [48]
The function is odd if you can replace every x with -x and get the oposite equation
example
if you replace x with -x in y=x^3, then you get -x^3, so therefor the functin is odd


so

replace x with -x


a. we get x^3+4, nope
b. we get -2x^3, yep
c. we get x^4-9, nope
d. we get x^4-4x, nope


answer is B
5 0
3 years ago
Expand (2x+ 3)² Please guys​
PSYCHO15rus [73]

Answer:

4x^2 + 12x + 9.

Step-by-step explanation:

(2x+3)^2

= (2x+3)(2x+3)

= 2x(2x+3)+3(2x+3)

= 4x^2 + 6x + 6x + 9

= 4x^2 + 12x + 9.

3 0
2 years ago
Solve p=10a+3b for a
pav-90 [236]
<span>p=10a+3b
10a = 3b - p
a = (3b-p) / 10

hope it helps</span>
8 0
3 years ago
Read 2 more answers
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