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antiseptic1488 [7]
3 years ago
12

What is x+3y=15 3x+2y=10 URGENT

Mathematics
2 answers:
gregori [183]3 years ago
4 0

Simplifying

2x + 3y = 1

Solving

2x + 3y = 1

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3y' to each side of the equation.

2x + 3y + -3y = 1 + -3y

Combine like terms: 3y + -3y = 0

2x + 0 = 1 + -3y

2x = 1 + -3y

Divide each side by '2'.

x = 0.5 + -1.5y

Simplifying

x = 0.5 + -1.5y

Vladimir79 [104]3 years ago
4 0

Answer:

0,5

Step-by-step explanation:

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Fill in the blank. Using the number line below, the plotted number is when rounded to the nearest thousand.​
prisoha [69]

Answer:

5000

Step-by-step explanation:

if its 5 or more round up. If it's 4 or less round down

6 0
3 years ago
Divide.
MArishka [77]

Answer:

3.75

Step-by-step explanation:

5 1/4÷1/3

so,

= 5 1/4×3/1

= 5 × 0.75

= 3.75

8 0
3 years ago
Sarah brought her City car in for repairs and maintenance over the first three years she owned it she replace the brake pads in
Veseljchak [2.6K]

Answer: Average per year for the repairs and maintenance is $273.66

Step-by-step explanation:

She replace the brake pads in the third year for $98 and the preventive maintenance plan cost $723 

what did he average per year for repairs and maintenance?

The total cost of repairs and maintenance = 98 + 723 = 821

repairs and maintenance over the first three years 

Divide the answer by 3

821/ 3 = 273.67 dollars per year

3 0
3 years ago
900% of it is 450 ?<br><br> please help with this
charle [14.2K]
900% of 450=4050

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 450 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 450 is 100%, so we can write it down as 450=100%.
4. We know, that x is 900% of the output value, so we can write it down as x=900%.
5. Now we have two simple equations:
1) 450=100%
2) x=900%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
450/x=100%/900%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 900% of 450

450/x=100/900
(450/x)*x=(100/900)*x - we multiply both sides of the equation by x
450=0.111111111111*x - we divide both sides of the equation by (0.111111111111) to get x
450/0.111111111111=x
4050=x


now
4 0
3 years ago
Help me please <br><br><br><br>I couldn't solve it​
inysia [295]

\text{L.H.S}\\\\=\dfrac{\sin^4 A - \cos^4 A}{ \sin A + \cos A}\\\\\\=\dfrac{(\sin^2 A)^2-(\cos^2 A)^2}{\sin A + \cos A}\\\\\\=\dfrac{(\sin^2 A + \cos^2 A)(\sin^2 A-\cos^2 A)}{\sin A + \cos A}\\\\\\=\dfrac{1\cdot(\sin A+\cos A)(\sin A - \cos A)}{\sin A +\cos A}\\\\\\=\sin A - \cos A\\\\\\=\text{R.H.S}~~~ \\\\\text{Proved.}

4 0
3 years ago
Read 2 more answers
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