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Vikki [24]
3 years ago
13

Solve the system of equations using multiplication.

Mathematics
1 answer:
salantis [7]3 years ago
6 0

Answer:

B. (-3, -2)

Step-by-step explanation:

Multiply the first equation by -1/3 and add the result to the second equation.

-1/3(3x -3y) +(5x -y) = -1/3(-3) +-13

4x = -12 . . . . simplify

x = -3 . . . . . . divide by 4

Substituting this into -1/3 times the first equation, we get ...

-(-3) +y = 1

y = -2 . . . . . . . subtract 3

The solution is (x, y) = (-3, -2).

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Put the value of the letters with " over the original
So for A we have 3 in the front and 4.5 for A"
4.5/3 = 1.5
We can check if this is actually the scale factor but using the other numbers
The second numbers for A and A" are 6 and 9
6 * 1.5 = 9
So for point A it is 1.5
Use the same thing for G. That gives you 2
For B, you get 0.5
So the scale factors are 1.5, 2, and 0.5
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The set of all points on a plane equidistant to a given point

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-3 3/4 divided by -10
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Vaughn paints his porch floor and also the porch floors of 9 neighbors. Each floor is a rectangle that is 8. 2 feet long and 6.
Burka [1]

Part a: The correct option A. 8.2 × 6.7  = 54.94; 54.94 x 9 = 494.46 square feet, for the equation of area.

Part b: Exact total area all 9 Vaughn paints = 494.46 square feet.

<h3>Explain the term the area of the rectangle?</h3>
  • The territory a rectangle occupies inside its 4 sides or limits is known as its area.
  • A rectangle's sides determine its area. In essence, the breadth and length of both the rectangle multiplied together gives the area of the rectangle.

As the equation stated-

Length of the rectangular porch floor = 8.2 feet

Width  = 6.7 feet

Part a: The most accurate estimation of the total area of all of the other painted porch floors comes from Vaughn paints.

Area = length x width

Equation for the total area is;

Area = 8.2 x 6.7 = 54.94 square feet.

There are 9 neighbor's floor also

Thus, equation becomes.

Area =  54.94 x 9 square feet.

Part b: Every one of the porch floors which Vaughn paints combined.

Area =  54.94 x 9 square feet.

Area =  494.46 square feet.

Thus, every one of the porch floors which Vaughn paints combined is 494.46 square feet.

To know more about the area of the rectangle, here

brainly.com/question/16239445

#SPJ4

The correct question are-

Vaughn paints his porch floor and also the porch floors of 9 neighbors. Each floor is a rectangle that is 8. 2 feet long and 6. 7 feet wide.

Part A: Which equations represent the best estimate of the total area of all the porch floors that Vaughn paints?

A. 8.2 × 6.7  = 54.94; 54.94 x 9 = 494.46 square feet

B. 8 x 7 = 56; 56 x 10 = 560 square feet

C. 10 x 7 = 70; 70 x 10 = 700 square feet

D. 10 x 10 = 100; 100 x 9 = 900 square feet

Part b: What is the exact total area of all the porch floors that Vaughn paints?

3 0
11 months ago
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