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3 years ago

What is 2x2+11x-15=0

1 answer:

4 0

$2x^{2} + 11x - 15 = 0$

Use the quadratic equation:
$x = \frac{-b \pm \sqrt{b^{2} - 4ac}}{2a}$
$= \frac{-11 \pm \sqrt{121 - 4(2)(-15)}}{4}$
$= \frac{-11 \pm \sqrt{121 + 120}}{4}$
$= \frac{-11 \pm \sqrt{241}}{4}$

$\therefore x = \frac{-11 + \sqrt{241}}{4}$
or $x = \frac{-11 - \sqrt{241}}{4}$

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4 years ago

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aleksandr82 [10.1K]

Answer:

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7 0

3 years ago

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2x + y =5 solve the system of equations by inspection

olga2289 [7]

Answer:

Slope=− 2.000/4.000 =−2.000

x−intercept= 2/5=2.50000

y−intercept= 1/5=5.00000

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

2*x+y-(5)=0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 2x+y-5 = 0 and calculate its properties

Notice that when x = 0 the value of y is 5/1 so this line "cuts" the y axis at y= 5.00000

y-intercept = 5/1 = 5.00000

When y = 0 the value of x is 5/2 Our line therefore "cuts" the x axis at x= 2.50000

x-intercept = 5/2 = 2.50000

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 5.000 and for x=2.000, the value of y is 1.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 1.000 - 5.000 = -4.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

Slope = -4.000/2.000 = -2.000

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3 years ago

I need help with this question

iogann1982 [59]

The answer is 190 yup

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2 years ago

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Write a formula that will help eric determine how much the potatoes he buys will cost in bulk.

OLEGan [10]

$t = p*k$ is the formula that will help eric determine how much the potatoes he buys will cost in bulk.

<h3></h3><h3>What is Advance algebraic Equations?</h3>

An equation obtained by equating to zero a sum of a finite number of terms each one of which is a product of positive integral powers (including the zero power) of the variables.

According to the question,

In order to calculate the price of the fruit we need to multiply the amount of food in kilograms by the price per kilogram of that specific food.

Since we are given specific variables for each piece of information needed for the variable.

All we need to do now is to create the formula to calculate the total price of the potatoes that Eric needs to buy.

$t = p*k$

By using this formula lets Eric calculate the total price of an order of fruit or vegetables.

Therefore,

A formula that will help eric determine how much the potatoes he buys will cost in bulk is $t = p*k$

Learn more about algebraic equation here:

brainly.com/question/953809

#SPJ1

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2 years ago