All categories

2 years ago

If u help me i will mark u brainless

Mathematics

1 answer:

castortr0y [4]2 years ago

4 0

Answer is : B

Explanation: step-by-step

You might be interested in

Points A, B, and C are collinear. Point B is between A and C, AC=15a-5 , AB=10a+6, and BC=3a+11. Find AB

sdas [7]

Answer:

I bet you're smarter than me so you can figure it out

Step-by-step explanation:

good thing you aint like me

7 0

2 years ago

Can some one show me how to do this pleases?!.

NNADVOKAT [17]

Let the price of each shrub be x 4x + 17.50 = 53.50 4x = 53.50 - 17.50 x = 36/4 = <span>$9</span>

7 0

3 years ago

Can someone help me please

Softa [21]

A I took the test :)

6 0

2 years ago

Write the equation for a 3rd degree polynomial function that has roots at x = 1–3i and x = 2. The y‑intercept is (0,10). Write a

HACTEHA [7]

Answer:

$\displaystyle P(x)=-\frac{1}{2}(x^2+2x+10)(x-2)$

Step-by-step explanation:

<u>Factored Form Of Polynomials </u>

If we know the roots of a polynomial as

$\alpha _1,\alpha _2,\alpha _3$

the polynomial can be expressed in factored form as

$a(x-\alpha _1)(x-\alpha _2)(x-\alpha _3)$

We are given two of the three roots of the polynomial:

$\alpha _1=1-3i$

$\alpha _2=2$

The other root must be the conjugate of the complex root:

$\alpha _3=1+3i$

Recall the product of two complex conjugate numbers is

$(1-3i)(1+3i)=1^2-(3i)^2=1+9=10$

The required polynomial is

$P(x)=a\left[ x-(1-3i)\right ]\left[ x-(1+3i)\right ](x-2)$

$P(x)=a(x^2+2x+10)(x-2)$

This is the factored form of the polynomial where only real numbers appear

We need to find the value of a, such as

$P(0)=10$

$P(0)=a(0^2+2(0)+10)(0-2)=10$

$-20a=10$

Thus the value of a is

$\displaystyle a=-\frac{1}{2}$

The expression of the required polynomial is

$\boxed{P(x)=-\frac{1}{2}(x^2+2x+10)(x-2)}$

5 0

2 years ago

<img src="https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B2%7D%7B7%7D%20%2B%5Ccfrac%7B3%7D%7B7%7D" id="TexFormula1" title="\bf \cfrac

Alenkinab [10]

Answer:

<h2><em><u>ᎪꪀsωꫀᏒ</u></em></h2>

=> 5/7

Step-by-step explanation:

2/7 + 3/7

=> 5/7

7 0

2 years ago

Read 2 more answers