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viva [34]
3 years ago
8

Solution of 3x2 = 7x − 3? 

Mathematics
1 answer:
yan [13]3 years ago
5 0
x = 9/7 ( aka 1.286)
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WILL GIVE 40 BRAINLY
irina [24]

Answer:

(3,2)

Step-by-step explanation:

The method of variable substitution is a way of solving a system of equations. It involves solving one equation for a variable and then substituting in the expression that represents the value of the solved variable into the other equation. After doing so, one can solve for the unknown variable and then backsolve for the other variable.

y=-2x+8\\y=x-1

In this system, the second equation is already solved for (y), thus one can substitute that expression into the other equation in the system.

x-1 = -2x + 8

Now solve using inverse operations,

x -1 = -2x + 8\\+2x\\\\3x - 1 = 8\\+1\\\\3x =9\\/3\\\\x = 3

Backsolve to find the value of (y), substitute in the value of (x), and solve for the value of (y).

y=x - 1\\

Substitute,

y=(3)-1

Solve,

y=2

Thus, the answer to this system of equations is the following, (3,2).

8 0
3 years ago
Can someone help me out?
Anna35 [415]

Answer:

I need more information

Step-by-step explanation:

4 0
3 years ago
How much money did Felicia invest?
Degger [83]
P=90 / 0.02 
p = 4500

answer
$4500
5 0
3 years ago
What is the value of x ?
defon

Answer:

use Pythagoras theoreom and try to solve it

3 0
3 years ago
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the length of a rectangle is 3 cm more than twice its width. Find the largest possible width if the perimeter is at most 66cm
Vanyuwa [196]
If you let the width be x, then the length will be 2x + 3. The perimeter P is twice the width plus twice the length, i.e., P = 2*x + 2*(2x + 3) = 2x + 4x + 6 = 6x + 6. So if the perimeter is 66 cm then 66 = 6x + 6 ---> 6x = 60 ---> x = 10 cm., and so if the perimeter is at most 66 cm., the width can be at most 10 cm..
6 0
3 years ago
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