Ask question

Ask question

All categories

Karo-lina-s [1.5K]

2 years ago

15

I dont understand quadratic equations

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>

You might be interested in

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

Read 2 more answers

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

Read 2 more answers