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3 years ago

Halp me on my math plz

Mathematics

1 answer:

liubo4ka [24]3 years ago

6 0

Post a better quistion

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Choose the correct answer below:

Anna007 [38]

Answer:

Step-by-step explanation:

The answer would have to be C cus it can't be A or D

6 0

2 years ago

Please help I dont get it :(

Crazy boy [7]

Answer:the answer is Knowing that 9^2+12^2= 13^2, , draw the 9 cm side and the 12 cm side with a right angle between them. The 13 cm side will fit to form a right triangle. ( C.) boooooooooooooom

3 0

3 years ago

And ask questions,

Naddik [55]

Answer:

707400

Step-by-step explanation:

i dont know

6 0

2 years ago

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

A number t multiplied by -4 is at least - 2/4

iris [78.8K]

-4t> -2/4
Turn sign because dividing negative
4t<-1/2
-4/2
T<-2
—

5 0

3 years ago