Matrix Calculator a
b
с
Change A
Change
B
2 3 3
A = 3 1 2
L7 8 9
A 1
=d
e
0
0
9
h
i
[
]
0
0
Find the elements in the inverse.
a =
X 3.5 f =
X => 1.5
b =
C = 1
X => -2.5
d = 1
C =
9 =
X = -1.5
X => -8.5
Result
d =
Operation
Select Operation =
X = 6.5 h =
e =
X => 1.5
undefined
X = -2.5
X = 3.5
COMPLETE
Intro

y = - 6

step-by-step explanation:

given the point (- 2, y) lies on the graph then it is a solution of it's equation.

substitute x = - 2 into the equation for value of y

y = 3(- 2) = 3 × - 2 = - 6

the point on the graph is (- 2, 6)

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25

answer: a) 56% women

b)44% men

step-by-step explanation: