3 years ago

What do I do????????

Mathematics

1 answer:

klio [65]3 years ago

8 0

The answer is 120 units

You might be interested in

15 more than x as an equation

inysia [295]

Answer: 15 + X= or X + 15=

5 0

3 years ago

Read 2 more answers

alpha and beta are the zeros of the polynomial x^2 -(k +6)x +2(2k -1). Find the value of k if alpha + beta = 1/2 alpha beta(ITS

serious [3.7K]

Answer:

$k=\frac{-11}{2}$ .

Step-by-step explanation:

We are given $\alpha$ and $\beta$ are zeros of the polynomial $x^2-(k+6)x+2(2k-1)$ .

We want to find the value of $k$ if $\alpha+\beta=\frac{1}{2}$ .

Lets use veita's formula.

By that formula we have the following equations:

$\alpha+\beta=\frac{-(-(k+6))}{1}$ (-b/a where the quadratic is ax^2+bx+c)

$\alpha \cdot \beta=\frac{2(2k-1)}{1}$ (c/a)

Let's simplify those equations:

$\alpha+\beta=k+6$

$\alpha \cdot \beta=4k-2$

If $\alpha+\beta=k+6$ and $\alpha+\beta=\frac{1}{2}$ , then $k+6=\frac{1}{2}$ .

Let's solve this for k:

Subtract 6 on both sides:

$k=\frac{1}{2}-6$

Find a common denominator:

$k=\frac{1}{2}-\frac{12}{2}$

Simplify:

$k=\frac{-11}{2}$ .

7 0

3 years ago

Which set of numbers could be the side length of a right tirangle

Crank

Answer:

Step-by-step explanation:

3x4=12

12/2=6

3,4,6

4 0

3 years ago

What is 735,286 rounded to the nearest ten thousand

Anon25 [30]

The answer is 740,000

7 0

3 years ago

Read 2 more answers

How many thousands = 4,000 ones

givi [52]

That would be 4 thousands

6 0

3 years ago