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3 years ago

Winter coats are marked 70% off on February 1st. If a coat costs $57.75 on January 31st, how much will it cost on February 1st?

2 years ago

YALL ARE STUPID!!!!!!!! ITS 17.31!!!!! I GOT THAT QUESTION WRONG CAUSE I PUT 17.33!!!! IT IS 17.31!! YOU WORTHLESS STUPID MOTHER FUCKERS

POOPYHEAD

2 years ago

nvm love yall <3

2 answers:

Andrews [41]3 years ago

7 1

Answer: $17.33

Step-by-step explanation:

Original Cost: 57.75

Percentage off: 70%

70% off of 57.75 (57.75 x 0.7 = 40.425. 57.75 - 40.425) = 17.33 (rounded)

Yakvenalex [24]3 years ago

6 1

Answer:

I would say 17. 33

Step-by-step explanation:

if you do 57. 75-(57. 75x. 7) that should be it since it it 70 off

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3 years ago

Now there is a square city of unknown size with a gate at the center of each side. There is a tree 20 b from the north gate. Tha

Brums [2.3K]

Answer:

The length of each side of the city is 250b

Step-by-step explanation:

Given

$a = 20$ --- tree distance from north gate

$b =14$ --- movement from south gate

$c = 1775$ --- movement in west direction from (b)

See attachment for illustration

Required

Find x

To do this, we have:

$\triangle ADE \sim \triangle ACB$ --- similar triangles

So, we have the following equivalent ratios

$AE:DE = AB:CB$

Where:

$AE = 20\\ DE = x/2 \\ AB = 20 + x + 14 \\ CB = 1775$

Substitute these in the above equation

$20:x/2 = 20 + x + 14: 1775$

$20:x/2 = x + 34: 1775$

Express as fraction

$\frac{20}{x/2} = \frac{x + 34}{1775}$

$\frac{40}{x} = \frac{x + 34}{1775}$

Cross multiply

$x *(x + 34) = 1775 * 40$

Open bracket

$x^2 + 34x = 71000$

Rewrite as:

$x^2 + 34x - 71000 = 0$

Expand

$x^2 + 284x -250x - 71000 = 0$

Factorize

$x(x + 284) -250(x + 284)= 0$

Factor out x + 284

$(x - 250)(x + 284)= 0$

Split

$x - 250 = 0 \ or\ x + 284= 0$

Solve for x

$x = 250 \ or\ x =- 284$

x can't be negative;

So:

$x = 250$

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