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Oksanka [162]
3 years ago
13

PLS HELP ! Will give brainliest!

Mathematics
1 answer:
Rasek [7]3 years ago
3 0

Given:

The quadratic equation is :

16x^2-20x-6=0

To find:

The quadratic formula for the given equation after substituting the values.

Solution:

If a quadratic equation is ax^2+bx+c=0, then the quadratic formula is:

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

We have,

16x^2-20x-6=0

In this equation, a=16,b=-20,c=-6.

Substituting a=16,b=-20,c=-6 in the above formula, we get

x=\dfrac{-(-20)\pm \sqrt{(-20)^2-4(16)(-6)}}{2(16)}

Therefore, the required quadratic formula for the given equation after substituting the values is x=\dfrac{-(-20)\pm \sqrt{(-20)^2-4(16)(-6)}}{2(16)}.

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Mai's younger brother tells her that 10/7 equal to 2‾√ 2 2‾√ 2 . Mai knows this can't be right, because 10/7 is rational and 2‾√
makvit [3.9K]

Answer:

The number 10/7 is a rational number, which means it can be expressed as a fraction. Also, if we divide it would give a decimal infinite periodical number, which means it has a pattern on its decimal numbers.

On the other hand, the square root of 2 is irrational number, that means it can't be expressed as a fraction, because its decimal numbers don't have any pattern at all.

So, Mai's brother can see these type of numbers as crazy (irrational numbers) and sane (rational numbers).

At last, another important characteristic to shows that they aren't equal is that they don't have the exactly decimal numbers.

6 0
3 years ago
How long would take you to drive around the earth at 80mph
Bess [88]

Answer:

311.25 hours ; almost 13 days

Step-by-step explanation:

actually you will not able to drive a car all the way around the earth (the Pacific and Atlantic oceans are really big).

but According to the calculation it would take you around 311.25 hours ( almost 13 days) to drive the 24,900 miles around the circumference of the earth at its widest point (the equator).

because we know ,

t=s/v

 =(24,900/80)hours                    [ s= the circumference of the earth]

 =311.25 hours                              [v=Velocity]

3 0
3 years ago
I need help can someone help me
Stels [109]

Answer:

what statements are there

5 0
3 years ago
Read 2 more answers
Suppose we have four integers, no two of which are congruent $\pmod 6$. Let $N$ be the product of the four integers. If $N$ is n
aalyn [17]

Answer:

4

Step-by-step explanation:

Given:

A, B, C, D have distinct positive values for mod 6

A (mod 6) = 1

B (mod 6) = 2

C (mod 6) = 4

D (mod 6) = 5

Each mod 6 value cannot be a zero since the product ABCD is not a multiple of 6.

Furthermore, in order that ABCD mod 6 > 0, we cannot  have a residue equal to 3, else the product with a residue 2 or 4 will make the product a multiple of 6.

Thus the only positive residues can only be 1,2,4,5

A*B*C*D  (mod 6) > 0  = 1*2*4*5 (mod 6) = 4

4 0
4 years ago
Jim and Carla are scuba diving. Jim Started out 10 feet below the surface. he descends 18 feet, rose 5 feet, and descended 12 mo
Viefleur [7K]

Carla rested at: -33


Jim rested at: -35

Now it is up to you to figure who was at the greater depth. I did the calculations for you all you have to do is compare:)))) GOOD LUCK its not hard now



6 0
3 years ago
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