All categories

2 years ago

If y=3x+5 and z=x^2+2x-5, what is yz?

Mathematics

1 answer:

Hitman42 [59]2 years ago

6 0

<h3>Answer: 3x^3 + 11x^2 - 5x - 25</h3>

Work Shown:

yz = y(x^2+2x-5)

yz = y(x^2) + y(2x) + y(-5)

yz = x^2( y ) + 2x( y ) - 5( y )

yz = x^2( 3x+5 ) + 2x( 3x+5 ) - 5( 3x+5 )

yz = x^2*3x + x^2*5 + 2x*3x + 2x*5 - 5*3x - 5*5

yz = 3x^3 + 5x^2 + 6x^2 + 10x - 15x - 25

yz = 3x^3 + 11x^2 - 5x - 25

You might be interested in

FIRST RIGHT GET BRAAINLYEST·⇔∀⊅⇆∠⊥∫ФФ

Fed [463]

Answer: Check attached picture

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Let x = 6.

Mars2501 [29]

Put the value of x = 6 to the eqpression 5x² + x - 7:

5(6)² + 6 - 7 = 5(36) + 6 - 7 = 180 + 6 - 7 = 179

<h3>Answer: 179</h3>

5 0

3 years ago

Western Athletic Club International (WACI) owns and operates a chain of fitness clubs. Currently WACI has 675 members at its Col

Ad libitum [116K]

Answer:

12%

Step-by-step explanation:

let x represent the actual number of members last year.

current members = 675 and with an increment of 13% over previous year

to find the increment

(675 - x) / x = 0.13

675 - x = 0.13x

collect the like terms

675 = 0.13x + x

675 = 1.13 x

x = approx 597 members were there last year

its hope to increase by the same number next year

percent increase = 675 - 597 / 675 = 78 / 675 = 0.12 = 12%

4 0

3 years ago

Sovle the following equation by factorization 2x-9x=0

nikitadnepr [17]

Answer:

11x=0

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Fran graphs the equations y = 2x2 – 2 and y = –0.5x + 4. Her graph is shown below. mc010-1.jpg Which value is an approximate sol

miv72 [106K]

On the added picture you can see that graphs of functions $y=2x^2-2$ and $y=-0.5x+4$ have two points of intersection. The x-coordinates of these points are the solutions of the equation
$2x^2-2=-0.5x+4$ .
Hence, the approximate solutions are x=-1.9 and x=1.6.

3 0

3 years ago

Read 2 more answers