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3 years ago

Solve the system of equations by substitution. What is the solution for x? (1 point)

2 answers:

8 0

       2x + y = 1
          2x - 2x + y = 1 - 2x
       y = 1 - 2x
       y = -2x + 1
       4x + 2y = -1
    4x + 2(-2x + 1) = -1
4x + 2(-2x) + 2(1) = -1
      4x - 4x + 2 = -1
         2 ≠ -1

The solution of the problem can't be a solution because they are both parallel lines, which means they have no solution.

Rudik [331]3 years ago

7 0

There is no x value, as there is no solution.

I hope this helps :))

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elixir [45]

Answer:

45,9

Step-by-step explanation:

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2 years ago

What is 1/10 of 1000 what is 1% out of 100

Ulleksa [173]

To get 1/10 -> 1000/10 =100
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2 years ago

A certain scale has an uncertainty of 4 g and a bias of 2 g. A single measurement is made on this scale. What are the bias and u

Fed [463]

Answer: 0.8

Step-by-step explanation:

given data:

uncertainity = 4g

bias = 2g

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6 0

3 years ago

The formula for the area A of a triangle with base length b and height h is as follows.

vlada-n [284]

Answer:

A is given by:

$A = h^2 - 4h$

Step-by-step explanation:

The base length of the triangle is 4 units shorter than the height.

This means that $b = h - 4$

$A = bh$

$A = (h-4)h$

$A = h^2 - 4h$

The expression for A in terms of h only was given above.

4 0

3 years ago

How do i do this idk how to do

marysya [2.9K]

Let's find the perimeter first by adding all the side lengths together. There are two missing side lengths, which we can find by taking the side opposite them and subtract the side behind the missing side from them.

I've attached a diagram showing how to find the side lengths.

Now let's add all the side lengths together: 4 cm + 8 cm + 8 cm + 2 cm + 4 cm + 6 cm = 32 cm

The perimeter of this figure is 32 cm.

---

To find the area we can divide this figure into 2 rectangles. On the second attached diagram, I've split the figure into two and labeled the length and width of each rectangle.

Area of a rectangle = length * width

Area of red labeled rectangle = 4 cm * 2 cm = 8 cm²

Area of yellow labeled rectangle = 8 cm * 4 cm = 32 cm²

Add the two areas together: 8 + 32 = 40

The area of the figure is 40 cm².

6 0

3 years ago

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