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3 years ago

6

Evaluate: 3 1 3 × 4 5

2 answers:

Yakvenalex [24]3 years ago

4 0

The one above is correct

Alexandra [31]3 years ago

3 0

313 x 45.. I'm assuming? If so, that would = 14,085

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Write 66² as a product of its prime factors <br><br> Please ill award brainlist

mestny [16]

Answer:

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Step-by-step explanation:

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2 years ago

A= 1/2 h (a+b) solve for h

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3 years ago

Is 0.09 greater than 0.7

chubhunter [2.5K]

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3 years ago

Read 2 more answers

Evaluate 16^1/2 and show work

LUCKY_DIMON [66]

Here is your answer

${16}^{1/2} = ({4}^{2})^{1/2}\\= {4}^ {2× 1/2}\\= 4$

HOPE IT IS USEFUL

4 0

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:

$x = 250$

6 0

3 years ago