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2 years ago

2. How do you describe quadratic equations?

Mathematics

2 answers:

scoundrel [369]2 years ago

4 0

Answer:

any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power solve of x in the quardic

equation x2+4x+4 =0

RUDIKE [14]2 years ago

3 0

Answer:

Step-by-step explanation:

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared. The standard form is ax² + bx + c = 0 with a, b, and c being constants where c is also the y-intercept here. They form the curve known as parabola it can be a curved shaped as n(maximum graph) or it can be curved shaped as u(minimum graph). They are solved using the quadratic formula and the values of x that we get by solving are the roots/zeros which means the curve intersects the x-axis at those specific points.

Famous example of a quadratic equation is

$x^2-x-1=0$ .

The golden ratio is found as the positive solution of the quadratic above quadratic equation.

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GUYS I NEED HELP PLSSSSSS! Ive been working on this ALL day!

Vika [28.1K]

First, let's write what we know.

We can represent the number of students in the play from each class as L, G, and C. We know that L = 7, and if Gardener has 4 more students than Cho, then G = C + 4.

Then, taking the third line, we can write an inequality:

C < L < G

C < 7 < C + 4

C - 4 < 3 < C

3 < C < 7

If C is greater than 3 and less than 7 and is an integer, than means C is 4, 5, or 6.

Then, we need to find how many students are in the play.

C + L + G

C + 7 + C + 4

2C + 11

So we have our expression for the number of students in the play. Then, we need to find the total number of students. We know that 2C + 11 will be 30% of the total, so if T is the total, we can find T.

0.3T = 2C + 11

(Divide by 3/10 or multiply by 10/3 on both sides)

T = 20/3 C + 110/3

We know from before that C is 4, 5 or 6. We can plug these into our equation here to find which one produces a whole number.

T = 20/3 * 4 + 110/3

T = 190/3

T = 20/3 * 5 + 110/3

T = 210/3

T = 70

T = 20/3 * 6 + 110/3

T = 230/3

We can see here that only when C is 5 will the total be a whole number. That means Mrs. Cho has 5 students in the play. If Mrs. Gardner has 4 more than that, she has 9 students in the play in her class. We now need to figure out the number of student in her class.

The total students are Cho's, Logan's, and Gardner's classes added together. We know that Logan's class is 23 students, so if we subtract that from the total, we can see that Cho's and Gardner's class have 47 students. If Mrs. Cho has 24 students in her class, we can subtract that from the 47, so we know that Mrs. Gardner has 23 students in her class.

4 0

3 years ago

A pair of jeans costs $40 and sales tax is 5%?<br>how much is the total bill?

spin [16.1K]

42$ because 10 % is 4 dollars so that 5% cut that 4 in half witch made it 2

5 0

3 years ago

Read 2 more answers

What is the equation in point-slope form if a line that passes through points (3,-5) and (-8,4)?

nignag [31]

The slope-point formula:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$