3 years ago

Select all of the following that are quadratic equations.

1 answer:

3 0

The name Quadratic comes from "quad" meaning square, because the variable gets squared (like x2). However, it is important to not that an expression is only quadratic if and only if the highest degree of a term is 2. Therefore, the quadratic equations from the pool of choices would be as follows:

3x^2 + 5x - 7 = 0
5x^2+ 15x = 0
x^2 - 4x = 4x + 7

You might be interested in

Can anyone help me with this problem and tell me how to solve it?

Savatey [412]

You add 0.65 to 80 and the answer is 80.65

5 0

3 years ago

ASAP PLS! WILL MARK BRAINLYEST AND 6TH GRADE MATH

professor190 [17]

Answer:

The correct answer is B!

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

What is the surface area of a sphere with a diameter of 12 centimeters ?

nasty-shy [4]

Answer:

$A=452.39\ cm^2$

Step-by-step explanation:

The formula to calculate the surface area of a sphere is the following:

$A=4\pi r^2$

Where A is the area of the sphere and r is the radius of the sphere.

In this case we know that the diameter d of the sphere is:

$d = 12\ cm$

The diameter is:

$d = 2r$ .

Thus

$r = \frac{d}{2}\\\\r = \frac{12}{2}\\\\r=6\ cm$

Then the surface area of the sphere is:

$A=4\pi (6)^2\\\\A = 144\pi\ cm^2\\\\A=452.39\ cm^2$

7 0

3 years ago

Read 2 more answers

In our solar system six of the eight planets have moons what percentage of the planets have moons

Paha777 [63]

6/8 x 100% = 75% (Answer)

8 0

3 years ago

Read 2 more answers

The sum of two consecutive integers is 59. Write an equation that models this situation and find the values of the two integers.

Roman55 [17]

An equation that models this situation: n + n +1 = 59 ( two consecutive integers: n, n+1 and their sum is 59)
2 n+1 = 59
2 n = 58
n = 58 : 2
n = 29, n + 1 = 30
Answer:D) n + n + 1 = 59, n = 29, n + 1 = 30

7 0

3 years ago