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r-ruslan [8.4K]
3 years ago
13

If -2x + 3 = 7 and 3x + 1 = 5 + y , what is the value of y

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
4 0

Answer: -10

Step-by-step explanation:

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Solve 2x^2+x-4=0<br> X^2+_×+_=0
natima [27]

Answer:

Hopes it helps

Step-by-step explanation:

The Quadratic Polynomial is

2 x² +x -4=0

Using the Determinant method to find the roots of this equation

For, the Quadratic equation , ax²+ b x+c=0

(b) x²+x=0

x × (x+1)=0

x=0  ∧ x+1=0

x=0     ∧   x= -1

You can look the problem in other way

the two Quadratic polynomials are

2 x²+x-4=0, ∧ x²+x=0

x²= -x

So, 2 x²+x-4=0,

→ -2 x+x-4=0

→ -x -4=0

→x= -4

∨

x² +x² +x-4=0

x²+0-4=0→→x²+x=0

→x²=4

x=√4

x=2 ∧ x=-2

As, you will put these values into the equation, you will find that these values does not satisfy both the equations.

So, there is no solution.

You can solve these two equation graphically also.

3 0
2 years ago
Order the following rational numbers from least to greatest:3•4 -0.01 1/4 12% -26.1
Angelina_Jolie [31]

Answer:

-26.1 , -0.01 , 12% , 1/4 , 3-4

Step-by-step explanation:

7 0
3 years ago
12. (07.06 LC) A library building is in the shape of a rectangle. Its floor has a length of (3x + 5) meters and a width of (5x −
Goshia [24]

ANSWER

15 {x}^{2} + 22x - 5

EXPLANATION

It was given that, the length of the rectangular building is

(3x + 5) \: meters

and the width of the is

(5x - 1) \: meters

The area of a rectangular building is calculated using the formula for finding the area of a rectangle.

A = l \times w

Since the dimensions are given in terms of x, the area is also a function of x,

A(x) = (3x +5 )(5x - 1)

We expand to get,

A(x) = 3x(5x - 1) + 5(5x - 1)

A(x) = 15 {x}^{2}  - 3x + 25x - 5

A(x) = 15 {x}^{2} + 22x - 5

meters square

8 0
3 years ago
A track has the shape shown. What is the perimeter (round to three decimal places)?
Naily [24]
Perimeter is all sides added<span />
3 0
2 years ago
Read 2 more answers
Cesars net worth is 8,250.63 his liabilities are 3,222.35 what is cesars assets
SashulF [63]

Given parameters:

Net worth of Cesar = 8250.63

Liabilities = 3222.35

Unknown:

Cesar's asset = ?

Solution:

A person's net worth is their Assets minus liability;

             Net worth  = Assets - Liabilities

  Assets  = Net worth + Liabilities

              For Cesar;

 Assets  = 8250.63 + 3222.35 = 11472.98

Cesar's assets is  11472.98

8 0
3 years ago
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