All categories

2 years ago

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

Mathematics

2 answers:

gavmur [86]2 years ago

7 0

Answer: Use the app: photomath

Step-by-step explanation:

Alex_Xolod [135]2 years ago

4 0

Answer:

x = 1 and y = 1

Step-by-step explanation:

7(1) minus 3(1) = 4

and 2(1) minus 1 = 1

just try and guess a number and try to solve the problem with that number, if it isn't the answer then repeat.

You might be interested in

Name an angle vertical to EGH

DaniilM [7]

Answer:

think its acute

Step-by-step explanation:

yes im just bored sorry

4 0

2 years ago

Read 2 more answers

Solve the system of equations with substitution or elimination method. please help 2x+y=4 and 6x+7y=12

GuDViN [60]

Answer:

x=2-y/2

y=12/7-6x/7

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

The sum of three consecutive numbers is 72. What is the largest of these numbers?

kicyunya [14]

3 consecutive numbers....x, x + 1 and x + 2

x + x + 1 + x + 2 = 72
3x + 3 = 72
3x = 72 - 3
3x = 69
x = 69/3
x = 23

x + 1 = 23 + 1 = 24
x + 2 = 23 + 2 = 25

so ur numbers are 23,24,25 with 25 being the largest

6 0

2 years ago

Read 2 more answers

Please Help! I got an answer, but I think it's wrong.

Ghella [55]

Answer:

I am pretty sure u got it right

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Show that sinxtanx=1-cos^2x/cosx

yawa3891 [41]

LHS: = $\sin x \tan x = \frac{\sin x \sin x }{\cos x} = \frac{\sin^2 x}{\cos x}$ (using $\tan x = \frac{\sin x}{\cos x}$ )

We know $\sin^2x + \cos^2x = 1 \Rightarrow \sin^2x=1-\cos^2x$ so we can replace the sin²x in the LHS expression as follows

$\frac{\sin^2x}{\cos x} = \frac{1-\cos^2x}{\cos x}$ which is the RHS.

7 0

2 years ago