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Karo-lina-s [1.5K]
2 years ago
15

I dont understand quadratic equations

Mathematics
2 answers:
Yanka [14]2 years ago
6 0
At least you must give a question that goes beyond your understanding?
MAVERICK [17]2 years ago
4 0
The quadratic equation produces a U shaped function; using the standard formula and the quadratic formula, you can understand quadratic equations.

quadratic equation:x =(<span><span>−b ± √(b^<span>2 </span>− 4ac))/</span>2a</span>
standard form: ax^2<span> + bx + c = 0</span>
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Which statement is true about the end behavior of the graphed function?
tatyana61 [14]

The <em><u>correct answer</u></em> is:

A) as the x-values go to positive infinity, the functions values go to negative infinity.  

Explanation:

We can see in the graph that the right hand portion continues downward to negative infinity.  The right hand side of the graph is "as x approaches positive infinity," since x continues to grow larger and larger.  This means as x approaches positive infinity, the value of the function approaches negative infinity.

8 0
3 years ago
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How many real solutions exist for this system of equations?
Rom4ik [11]

Answer:

One

Step-by-step explanation:

Set each equations equal to each other

{x}^{2}  + 4 = 4x

{x}^{2}  - 4x + 4

Find the discrimant.

{ - 4 {}^{2} - 4(1)(4) } = 0

This means there is one real solution. Since the discramnt equal 0.

7 0
2 years ago
4h+8=20 what is h?..........
sergey [27]
I believe it's 3 because 4 times 3 equals 12 and 12 plus 8 equals 20! 
4(3)+8=20

Hoped this helped! :)
3 0
3 years ago
Read 2 more answers
(will give brainliest!)
Flura [38]

Answer:

D) cot(C) = 1/2.

Step-by-step explanation:

We can go through each choice and examine is validity.

Choice A)

We have:

\displaystyle \sec B=\frac{3}{7}

Recall that secant is the ratio of the hypotenuse to the adjacent.

With respect to B, the adjacent is 6 and the hypotenuse is 7.

Therefore, sec(B) should be 7/6 instead.

A is incorrect.

Choice B)

We have:

\displaystyle \cot B=\frac{3}{2}

Cotangent is the ratio of the adjacent side to the opposite.

With respect to B, the adjacent side is 6 and the opposite side is 3.

Therefore, cot(B) = 6/3 = 2.

B is incorrect.

Choice C)

C is incorrect for the reasons listed in A.

Choice D)

We have:

\displaystyle \cot C=\frac{1}{2}

Again, cotangent is the ratio of the adjacent side to the opposite.

With respect to C, the adjacent side is 3 and the opposite side is 6.

So, cot(C) = 3/6 = 1/2.

Therefore, D is the correct choice!

8 0
2 years ago
how much money has to be invested at 3.3% interest compounded constinuously to have $45,00 after 19 years
Sedaia [141]
P=$24038.60 has to be invested to have $45000 after 19 years
3 0
3 years ago
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