All categories

4 years ago

Which elements have similar behavior? barium, silicon, aluminum, strontium, osmium, beryllium

Mathematics

1 answer:

Thepotemich [5.8K]4 years ago

7 0

Answer:

barium, strontium, beryllium

You might be interested in

Find a quadratic polynomial with integer coefficients which has x = 2/9, ± SQRT23/9 as its real zeros.

melomori [17]

Answer:

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

Step-by-step explanation:

Statement is incorrectly written. Correct form is described below:

Find a quadratic polynomial with integer coefficients which has the following real zeros: $x = \frac{2}{9}\pm \frac{\sqrt{23}}{9}$ .

Let be $r_{1} = \frac{2}{9}+\frac{\sqrt{23}}{9}$ and $r_{2} = \frac{2}{9}-\frac{\sqrt{23}}{9}$ roots of the quadratic function. By Algebra we know that:

$y = (x-r_{1})\cdot (x-r_{2}) = x^{2}-(r_{1}+r_{2})\cdot x +r_{1}\cdot r_{2}$ (1)

Then, the quadratic polynomial is:

$y = x^{2}-\frac{4}{9}\cdot x -\frac{19}{81}$

$y = 81\cdot x^{2}-36\cdot x -19$

The quadratic polynomial with integer coefficients is $y = 81\cdot x^{2}-36\cdot x -19$ .

5 0

3 years ago

Complete the table of ordered pairs for the given linear equation

nika2105 [10]

Answer:

First blank= -1

Second blank= 14

Step-by-step explanation:

Plug in x to the equation. 1/7 x (-7)= -7/7=-1

2=1/7(x) to divide fractions you multiply by the reciprocal

2 x 7/1= 1/7× 7/1

14/1=14

4 0

3 years ago

Hii giving thanks pls help

olchik [2.2K]

Answer:

x = 52

Step-by-step explanation:

<I = < K b/c of corresponding angles thm

x + 66 + 62 = 180

x + 128 = 180

x = 52

6 0

3 years ago

How to Change the water faucet knobs

balandron [24]

Is it for your kitchen sink or bathroom sink?

7 0

3 years ago

Read 2 more answers

What is 78,400,000 expressed in scientific notation?

Virty [35]

Answer:

7.84 × 10 ^7

Step-by-step explanation:

6 0

3 years ago