All categories

2 years ago

Write a quadratic equation in standard form with the roots of 2 and -5. Assume a = 1.

Mathematics

1 answer:

trasher [3.6K]2 years ago

6 0

Answer:

x^2+3x-10

Step-by-step explanation:

If roots are 2 and -5, then the unexpanded form must be (x-2)(x+5). Expand using foil or preferred method to get answer.

You might be interested in

A spheres radius is multiplied by 2. How is it’s surface area affected

dexar [7]

Answer:

The surface area is multiplied by 3.

Step-by-step explanation:

If r is the radius of a sphere its surface area = 4(pi)r^2. If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2. So the surface area becomes 4-fold or the increase in surface area is 300%.

3 0

2 years ago

Graph the line of the given equation

Dafna11 [192]

Answer:

Step-by-step explanation:

See the attached image

3 0

2 months ago

What is the value for x in 5x+4>24

Allisa [31]

Answer:

x>4

Step-by-step explanation:

Do 5x>24-4 subtract... the u have 5x>20 so you divide both sides by 5 and u get 4

3 0

2 years ago

Read 2 more answers

The midpoint of segment AB is (4, 2). The coordinates of point A are (2, 7). Find the coordinates of point B.

erastovalidia [21]

Answer:

<h3>The option B) is correct</h3><h3>Therefore the coordinate of B $(x_2,y_2)$ is (6,-3)</h3>

Step-by-step explanation:

Given that the midpoint of segment AB is (4, 2). The coordinates of point A is (2, 7).

<h3>To Find the coordinates of point B:</h3>

Let the coordinate of A be $(x_1,y_1)$ is (2,7) respectively
Let the coordinate of B be $(x_2,y_2)$
And Let M(x,y) be the mid point of line segment AB is (4,2) respectively
The mid-point formula is

Now substitute the coordinates int he above formula we get
$(4,2)=(\frac{2+x_2}{2},\frac{7+y_2}{2})$
Now equating we get

$4=\frac{2+x_2}{2}$ $2=\frac{7+y_2}{2}$

Multiply by 2 we get Multiply by 2 we get

$4(2)=2+x_2$ $2(2)=7+y_2$

$8=2+x_2$ $4=7+y_2$

Subtracting 2 on both

the sides Subtracting 7 on both the sides

$8-2=2+x_2-2$ $4-7=7+y_2-7$

$6=x_2$ $-3=y_2$

Rewritting the above equation Rewritting the equation

$x_2=6$ $y_2=-3$

<h3>Therefore the coordinate of B $(x_2,y_2)$ is (6,-3)</h3><h3>Therefore the option B) is correct.</h3>

7 0

2 years ago

Which algebraic expression is equivalent to the expression below?

Anna007 [38]

Answer:

$\boxed {52x - 45}$ (Choice B)

Step-by-step explanation:

Solve the following expression:

$9(5x - 5) + 7x$

-Use <u>Distributive Property</u>:

$9(5x - 5) + 7x$

$45x - 45 + 7x$

-Combine like terms:

$45x - 45 + 7x$

$\boxed {52x - 45}$

6 0

2 years ago