3 years ago

What two numbers add to 9 and multiply to negative 11

1 answer:

6 0

The two numbers are (9+ 5√5)/2 and (9- 5√5)/2.

(9+ 5√5)/2+ (9- 5√5)/2= 9
(9+ 5√5)/2* (9- 5√5)/2= -11

Hope this helps~

You might be interested in

Someone please help he understand howto solve literal equatons and formulas

disa [49]

Answer:

You will learn it in school

Step-by-step explanation:

LISTEN TO THE TEACHER

8 0

3 years ago

Read 2 more answers

What is 3,989.23655 rounded to the nearest one thousandth?

Xelga [282]

The 6 is in the thousandth place so you round with that being the last number
since we have a 55 after the 6, we round up
so we get
3,989.237

8 0

3 years ago

Select the property of equality used to arrive at the conclusion. If x = 3, then x 2 = 3x

VARVARA [1.3K]

I think it would be the Multiplication property of equality

4 0

3 years ago

Read 2 more answers

Which decimal represents the shaded portion 0.003 0.03 0.3 3.0

34kurt

0.3 is the right answer

5 0

3 years ago

A baseball is hit into the air, and its height h in feet after t seconds is given by h(t)= -16t^2+128t+2. The height of the bas

tankabanditka [31]

Answer:

$\large \boxed{\sf \ \text{2 feet, 4 seconds, 258 feet } \ }$

Step-by-step explanation:

Hello,

To know the height of the baseball when it is hit we have to compute h(0), as t = 0 is when the baseball is hit into the air.

$h(0)=-16\cdot 0^2+128 \cdot 0+2=2$

So, the answer is 2 feet.

h(x) is a parabola which can be written as $ax^2+bx+c$ , it means that the vertex is the point (-b/2a,h(-b/2a)).

The baseball reached its maximum height after

$\dfrac{-b}{2a}=\dfrac{-128}{-2*16}=\boxed{4 \text{ seconds}}$

And the maximum height of the baseball is h(4).

$h(0)=-16\cdot 4^2+128 \cdot 4+2=-256+512+2=\boxed{258 \ \text{feet}}$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

8 0

3 years ago