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Artist 52 [7]
2 years ago
9

Can anyone help me please

Mathematics
2 answers:
brilliants [131]2 years ago
8 0

Answer:

Here you go

Step-by-step explanation:

Maksim231197 [3]2 years ago
7 0
I think the guy above me is right
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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:

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

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
2 years ago
How many times greater is 70 million than 7 million
Dahasolnce [82]

For this case we have the following expressions:

70,000,000

7,000,000

If we divide the first expression by the second we have:

\frac {70,000,000} {7,000,000} = 10

Thus, we have that the first expression is 10 times greater than the second expression.

Answer:

70,000,000 is 10 times greater than 7,000,000

6 0
3 years ago
If you drove 60 miles in two hours, how many miles per hour did you drive?<br><br> 30 miles per hour
soldi70 [24.7K]

Answer:

30 mph

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the area, in square centimeters, of the isosceles trapezoid below?
Lostsunrise [7]
[(14,7 + 5,9) x 5,8] / 2 = 59,74 cm^2
5 0
3 years ago
John took 3 exams so far this semester. He scored 45, 65 and 80 on those 3 exams . What score does he need on the fourth exam to
Olegator [25]

Answer:

He \: needs \: to \: score \: 90 \: or \: more

Step-by-step explanation:

\frac{x + 45 + 65 + 80}{4}  \geqslant 70\Leftrightarrow x + 190 \geqslant 280\Leftrightarrow x \geqslant 90

3 0
3 years ago
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