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2 years ago

5x + 2 = 8x + 5 Help me before I die quick math is so hardddddd

2 answers:

7 0

Instead of explaining with words, I will list steps that hopefully you can understand!

Step 1: List it as it is so that we can get it correct!

5x + 2 = 8x + 5

Step 2: Subtract 2 from both sides.

2 - 2 = 0
5 - 2 = 3

Step 3: Simplify.

5x = 8x + 3

Subtract 8x from both sides.

5x - 8x = -3x
8x - 8x = 0

Step 4: Simplify.

-3x = 3

Step 5: Divide by -3.

-3 / -3 = 1
3 / (-3) = -1

x = -1

If you need help, let me know and I will gladly assist you!

attashe74 [19]2 years ago

4 0

Answer:

x = -1

Step-by-step explanation:

Note: when you send a number across it can change it sign. If it is positive it will turn negative.

5x + 2 = 8x + 5

Send 8x across

5x + 2 - 8x = 5

send 2 across

5x - 8x = 5 - 2

- 3x = 3

Divide both sides by - 3

- 3x/- 3 = 3/- 3

- 3 cancel out - 3

x = 3/ - 3

3 divided by - 3 is - 1

x = -1

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3 years ago

What is the perimeter of the trapezoid with vertices Q(8, 8), R(14, 16), S(20, 16), and T(22, 8)? Round to the nearest hundredth

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The initial price of buzz stock is $20 per share. After 20 days the stock price is $30 per share and after 40 days the price is

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Answer:

$s(t) = -\dfrac{t^2}{160}+\dfrac{5}{8}t+20$

Step-by-step explanation:

given,

initial price of buzz stock = $ 20 per share

after 20 days

stock price = $30 per share

after 40 days

the price = $35 per share

let say it is modeled by

y = ax² + b x + c

x = number of days

y = stock price

x = 0 y = 20

20 = a x 0 + b x 0 + c

c = 20

x = 20 y = 30

30 = 20² a + 20 b + 20

400 a + 20 b = 10...........(1)

x = 40 y = 35

35 = 40² a + 40 b + 20

1600 a + 40 b = 15...........(2)

solving equation (1)and (2)

a = - 1/160

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$y = -\dfrac{x^2}{160}+\dfrac{5}{8}x+20$

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3 years ago