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yaroslaw [1]
3 years ago
8

Which ordered pair (x, y) is a solution to the given system of linear equations?

Mathematics
2 answers:
MArishka [77]3 years ago
5 0

(-1, 0)

Start by adding -2x to both sides of the second equation. Then substitute that equation into the first.

3x+3(2x+2)=-3

Solve the equation for x.

When you've found the value of x, substitute that value into the equation with the isolated y.

y=2(-1)+2

Bogdan [553]3 years ago
4 0
(-1,0) is the answer
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Sal is tiling his entryway. The floorplan is drawn on a unit grid. Each unit length represents 1 foot tile cost $1.25 per square
Tresset [83]

Answer: Sal will pay $77.78 to tile his entryway

Step-by-step explanation:

The image of the question is attached below.  

Given each unit length = 1 foot  

Tile cost per square feet = $1.  65

To find the area, split the floor shape into two shape.  

One is trapezoid and the other is parallelogram.  

Let's count the grid given.  

The parallels sides of trapezoid are 7 ft and 4 ft, height is 7 ft.  

The base and height of the parallelogram are 4 ft and 4 ft respectively.  

Area of the trapezoid  

                                 

                                 

Area of the trapezoid = 27.5 sq.ft  

Area of the parallelogram = base × height  

                                       = 4 ft × 4 ft  

Area of the parallelogram = 16 sq. ft  

Total area = 27.5 sq. ft + 16 sq. ft  

              = 43.5 sq. ft  

Cost of area per sq. ft = $1.65  

Cost of area 43.5 sq. ft = 43. 5 × 1.65  

                                   = $71.775

                                   = $71.78  

Hence Sal will pay $71.78 to tile his entryway.

4 0
3 years ago
What is the value of x? A.86 B.60 C.52 D.26
Nadya [2.5K]

   First of all in order for us to figure out what angle x is we need to find the formula for finding that specific type of angle.

Formula is...

x = (far arc - close arc) ÷ 2

Now we just need to plug in.

x = (172° - 52°) ÷ 2 =

x = 120° ÷ 2 = 60°

Your answer: x = 60°

Good Luck! :)

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6 0
3 years ago
What's the difference between 178 and -395
Nastasia [14]
178-(-395)
A positive subtracted by a negative is always positive.
178+395
=573
3 0
3 years ago
Read 2 more answers
Drag the expressions into the boxes to correctly complete the table.
Maslowich

Answer:

Polynomial

x^4 +3x^3 -5x^2 -7x +20\\\\x^3 -2x^2 +x -12\\\\x^2 + 3x^5 -6x +12x^3

not a polynomial

4\sqrt[3]{x} -\sqrt{x} -20\\\\x^{-3}-x}^{-2}-6x^{-1}+8\\\\\frac{5}{x^3} -\frac{1}{x^2} +\frac{8}{x} -40\\\\

3 0
3 years ago
On a skiing trip there are five people but only three pairs of skis how many different groups of three could ski
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_5C_3=\frac{5!}{3!(5-3)!}=\frac{5!}{3!2!}=\frac{120}{12}=10
3 0
3 years ago
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