All categories

3 years ago

Find an ordered pair (x, y) that is a solution to the equation. -x+4y= 2

Mathematics

1 answer:

brilliants [131]3 years ago

8 0

Answer:

x=0 y=0.5

Step-by-step explanation:

You might be interested in

the ages of three siblings are all consecutive integers the sum of their ages is 39 how old is the youngest sibling variable equ

Verdich [7]

Answer:

Step-by-step explanation:

Let x = the age of the youngest child

Let x + 1 = the age of the middle child

Let x + 2 = the age of the oldest child

x + x + 1 + x + 2 = 39

3x + 3 = 39

3x = 36

x = 12 years

8 0

3 years ago

Please answer this question Please Thank you have a nice day

sp2606 [1]

Answer:

17t+9

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Select the two values of x that are roots of this equation.<br> 2x^2+ 1 = 5x

iren [92.7K]

Answer:

$\frac{5+\sqrt{17}}{4}$ , $\frac{5-\sqrt{17}}{4}$

Step-by-step explanation:

One is asked to find the root of the following equation:

$2x^2+1=5x$

Manipulate the equation such that it conforms to the standard form of a quadratic equation. The standard quadratic equation in the general format is as follows:

$ax^2+bx+c=0$

Change the given equation using inverse operations,

$2x^2+1=5x$

$2x^2-5x+1=0$

The quadratic formula is a method that can be used to find the roots of a quadratic equation. Graphically speaking, the roots of a quadratic equation are where the graph of the quadratic equation intersects the x-axis. The quadratic formula uses the coefficients of the terms in the quadratic equation to find the values at which the graph of the equation intersects the x-axis. The quadratic formula, in the general format, is as follows:

$\frac{-b(+-)\sqrt{b^2-4ac}}{2a}$

Please note that the terms used in the general equation of the quadratic formula correspond to the coefficients of the terms in the general format of the quadratic equation. Substitute the coefficients of the terms in the given problem into the quadratic formula,

$\frac{-b(+-)\sqrt{b^2-4ac}}{2a}$

$\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}$

Simplify,

$\frac{-(-5)(+-)\sqrt{(-5)^2-4(2)(1)}}{2(2)}$

$\frac{5(+-)\sqrt{25-8}}{4}$

$\frac{5(+-)\sqrt{17}}{4}$

Rewrite,

$\frac{5(+-)\sqrt{17}}{4}$

$\frac{5+\sqrt{17}}{4}$ , $\frac{5-\sqrt{17}}{4}$

8 0

3 years ago

What does Descartes' rule of signs tell you about the possible number of positive real zeros and the possible number of negativ

Sergio039 [100]

Answer:

3 or 1 positive real zeros
0 negative real zeros

Step-by-step explanation:

The signs of the coefficients of the given terms are ...

+ - + -

There are three sign changes, so the number of positive real zeros is 3 or 1.

When odd-degree terms have their signs changed, the signs become ...

- - - -

There are no sign changes, hence no negative real zeros.

_____

A graph confirms this evaluation.

8 0

3 years ago

The length of the base of the triangle is 78 mm and the height is 55 mm. Find the area.

leva [86]

Answer: 2145 ²

Step-by-step explanation:

6 0

3 years ago