3 years ago

7x - 3y = 4 2x - 4y = 1 The solution to the system of equations is

1 answer:

6 0

7x-3y=4 ..............(1)
2x-4y=1...............(2)

4(1)-3(2) [-4 is the coefficient of y in (2), -3 is the coefficient of y in (1) ]
28x-12y = 16...........(1a)
6x-12y = 3...............(2a)
Subtract
22x = 13
solve
x=13/22 ....................(3)

Substitute (3) in (1)
7(13/22)-3(y)=4
solve for y
91/22-3y=4
3y=(91-88)/22=3/22
y=1/22

Answer: the solution is (13/22, 1/22)

You might be interested in

Find the value of each power?

sweet [91]

1=-8 l
4=100 l
7=? l
llllllllllllllllllllll

5 0

3 years ago

Read 2 more answers

Find the volume of a cylinder of radius 10 cm and height 22 cm. ANSWERS: 6,911.5 cm3 691.2 cm3 20.9 cm3 62.8 cm3

goldfiish [28.3K]

Answer:

$= 6911.5 {cm}^{3} \\$

Step-by-step explanation:

$v = \pi {r}^{2} h \\ = \pi \times {10}^{2} \times 22 \\ = 6911.5 {cm}^{3}$

hope this helps you.

7 0

2 years ago

Helppppppppppppppppppppppppppp

Otrada [13]

The equation is:
y = 10 sin(π/15 t) + 30
where 30 represents the initial height of the blade above the ground and π/15 represents the period as we are given that the blade completes two rotation every minute.Finally the 10 represents the length of the blades.

Hope this helps :)

7 0

3 years ago

8 6<br> __ + ___ = -2<br> 10 10

Juliette [100K]

Answer:

Step-by-step explanation:

8 0

3 years ago

Enter an expression that shows take away 10 from the quantity 6×24 .

zloy xaker [14]

If the expression needs to be full it will look like this:
(6*24)-10
If the expression needs to be simplified it will either look like:
144-10
or
134

4 0

3 years ago