All categories

3 years ago

Solve this eqution with work please also show work solve for x and y x=-y+5 y=-3x+3

2 answers:

7 0

The answer is x=−1 and y=6. You can solve it using a graph, substitution, or elimination.

tankabanditka [31]3 years ago

4 0

So you are given what x and y are. All you have to do is substitute and simplify.
Since y = -3x + 3
The y value in the first equation can be substituted for -3x + 3
I.e. x = - (-3x + 3) + 5
So where you see 'y' in the first equation, put in what y actually is.
Now simplify
x = 3x - 3 + 5 [two minuses makes a positive]
x = 3x + 2
-2x = 2
so x = 2/-2 = -1

With the value of x you found, substitute it in to find y
I.e. y = -3(-1) + 3
y = 3 + 3 = 6

So x = -1 and y = 6

You might be interested in

In this subtraction, PR5T and 47Y6 represent 4-digit numbers. What number does PR5T represent?

Svetach [21]

Answer:

PR5T represents 6754.

P = 6

R = 7

T = 4

Y = 5

Step-by-step explanation:

Let us try to understand the subtraction starting from the unit's digit.

P R 5 T

- 4 7 Y 6

-----------------

1 9 9 8

To get 8, 6 should be subtracted from 14

14 - 6 = 8

So, T should be equal unit digit of 14 i.e. T = 4 and 1 should be carried over from the ten's digit of PR5T.

Now, let us move to ten's digit:

P R 5 4

- 4 7 Y 6

-----------------

1 9 9 8

To get 9, 6 should be subtracted from 15. But 1 is already carried to unit's place So, we have actually 14 here

14 - Y = 9

So, Y = 5

Moving to hundred's place:

R - carry - 7 = 9

Carry is 1, so R = unit's place of 9 + 8 i.e. R = 7

Moving to thousand's place:

P - carry - 4 = 1

Here carry is 1

So, P = 1 + 4 + 1 = 6

So, the number PR5T is 6754.

5 0

3 years ago

Estimate the difference. 6.11 - 1.2 6 7 5 4

fenix001 [56]

Answer:

Step-by-step explanation:

8 0

3 years ago

Nuts.com sells raw almonds for $10 per pound and roasted pistachios for $12 per pound. Christopher spends $70, before taxes and

sp2606 [1]

Christopher purchased 2.8 pounds of almonds and 3.5 pounds to roasted pistachios.

Step-by-step explanation:

Cost of almonds per pound = $10

Cost of roasted pistachios = $12

Total amount spent = $70

Weight of nuts = 6.3

Let,

Weight of almonds = x

Weight of roasted pistachios = y

According to given statement;

x+y=6.3 Eqn 1

10x+12y=70 Eqn 2

Multiplying Eqn 1 by 10

$10(x+y=6.3)\\10+10y=63\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2;

$(10x+12y)-(10x+10y)=70-63\\10x+12y-10x-10y=7\\2y=7$

Dividing both sides by 2

$\frac{2y}{2}=\frac{7}{2}\\y=3.5$

Putting y=3.5 in Eqn 1

$x+3.5=6.3\\x=6.3-3.5\\x=2.8$

Christopher purchased 2.8 pounds of almonds and 3.5 pounds to roasted pistachios.

Keywords: linear equations, elimination method

Learn more about elimination method at:

#LearnwithBrainly

8 0

3 years ago

What is a symmetry? In math terms

Dmitriy789 [7]

Symmetry is when an image or being is halved into two, and both sides are the exact same to each other.

7 0

4 years ago

Find the output y when the input x is -5 y=?

antiseptic1488 [7]

Answer: y=7

Step-by-step explanation: looking at the graph when x is -5 y= 7

3 0

3 years ago