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2 years ago

Given the equation y= 3x + 8, what would be the value of y be when x = 3?

Mathematics

1 answer:

Lelechka [254]2 years ago

5 0

Answer:

$y = 17$

Step-by-step explanation:

We were given the equation

$y = 3x + 8$

and we were told that x = 3, therefore y would be

$y = 3x + 8 \\ y = 3(3) + 8 \\ y = 9 + 8 \\ y = 17$

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Expand (2x + 3)^5 using the Binomial Theorem and Pascal’s triangle. Show all steps.

kari74 [83]

Answer:

32x⁵ + 240x⁴ + 720x³ + 1080x² + 810x + 243

Step-by-step explanation:

(2x + 3)⁵

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Use Pascal's triangle to find nCr.

$\left\begin{array}{c}1\\1\ 1\\1\ 2\ 1\\1\ 3\ 3\ 1\\1\ 4\ 6\ 4\ 1\\1\ 5\ 10\ 10\ 5\ 1\end{array}\right$

1 (2x)⁵ (3)⁰ + 5 (2x)⁴ (3)¹ + 10 (2x)³ (3)² + 10 (2x)² (3)³ + 5 (2x)¹ (3)⁴ + 1 (2x)⁰ (3)⁵

(2x)⁵ + 15 (2x)⁴ + 90 (2x)³ + 270 (2x)² + 405 (2x)¹ + 243

32x⁵ + 240x⁴ + 720x³ + 1080x² + 810x + 243

7 0

2 years ago

Solve each of the following equations by the trial and error method : A) X- 7= -3 help some one now

Vaselesa [24]

Answer:

X - 7 = - 3

X = - 3 + 7

X = 4

the 7 turns positive because it was moved to the other side of the symbol "=" so we reverse the sign

- becomes +

and

+ becomes -

8 0

2 years ago

Which expression represents the area of a square with sides of length 3xy??

monitta

Answer:

9x^2y^2

Step-by-step explanation:

Ok so to find the area of a square we have to square the side length. So 3xy*3xy = 9x^2y^2 because 3*3=9, x*x=x^2, and y*y=y^2.

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2 years ago

PLs Help..............

Gennadij [26K]

Answer:

sorryyyy i dont know the answer :-(

Step-by-step explanation:

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7 0

2 years ago

Read 2 more answers

What is 1/10 of 800 and what is 1/10 of 50

kolezko [41]

1/10 of 800 = 80

1/10 of 50 = 5

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

3 0

3 years ago