3 years ago

Please helpppp

Mathematics

1 answer:

inysia [295]3 years ago

5 0

C,A,A,B i thinkkkkkkkkkkk

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. Six friends went to a basketball game. The

Sati [7]

Answer:

6x+20 or 2(3x+10)

Step-by-step explanation:

Six friends went to a basketball game and four people paid $5 extra for a t-shirt. To find the total cost, multiply 6 by x and 4 by 5 this add them together:

6*x+4*5

6x+20, If needed you can factor this expression to:

2(3x+10)

7 0

3 years ago

5. Which expression is a factor of x2 -5x - 6? A B x - 6 x-2 c x-3 1

noname [10]

Answer:

The answer is B

Step-by-step explanation:

6 0

3 years ago

How do you solve this? (#11/#12)

zepelin [54]

$\text{If}\ x_1,\ \text{and}\ x_2\ \text{are zeros of a polynomial function, then the function}\\\text{has equation}:\\\\f(x)=a(x-x_1)(x-x_2).\\----------------------------\\\\11.\ \text{We have the zeros}\ 3\ \text{and}\ i:\\\\f(x)=(x-3)(x-i)=(x)(x)+(x)(-i)+(-3)(x)+(-3)(-i)\\\\=x^2-xi-3x+3i=\boxed{x^2-(3+i)x+3i}\\\\12.\ \text{We have the zeros}\ -2\ \text{and}\ 2i:\\\\f(x)=(x-(-2))(x-2i)=(x+2)(x-2i)\\\\=x^2-(2i)^2=x^2-2^2i^2=x^2-4(-1)=\boxed{x^2+4}\\\\\text{used}\\\\(a-b)(a+b)=a^2-b^2\\\\i=\sqrt{-1}\to i^2=-1$