What is the answer to: y=-2x-5,4x+3y=15 using substitution to solve it..??
1 answer:
You might be interested in
Answer:
Marge has earned $60.
Step-by-step explanation:
Let the total money she earned be x.
Money spent o the phone =
Money left with Marge after buying phone= x - 0.5 x = 0.5 x
Money spent on the gift=
Money left with Marge after buying gift= 0.5 x - 0.25 x = 0.25x
Final amount left with marge = $15
Marge has earned $60.
The value of x is 28
Solution:
The approximate image of the question is attached below.
Given data:
The angles of the triangle are x°, (2x + 5)° and (3x + 7)°.
By triangle sum theorem,
<em>Sum of all the angles of the triangle = 180°</em>
x° + (2x + 5)° + (3x + 7)° = 180°
x° + 2x° + 5° + 3x° + 7° = 180°
6x° + 12° = 180°
Subtract 12° from both sides of the equation, we get
6x° = 168°
Divide by 6° on both sides of the equation, we get
x° = 28°
x = 28
The value of x is 28.
