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3 years ago

15

Y’all please help me with this I don’t understand

2 answers:

Yanka [14]3 years ago

3 0

Answer: I believe it’s 8

Step-by-step explanation:

It’s 13 minus 5

zlopas [31]3 years ago

3 0

Answer:

I believe the answer is 65

Step-by-step explanation:Because whenever you"re calculating the area of a triangle we use the formula base times height or 1/2 base times height so

13×5 is equal to 65

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Solution of the equation<br> 3x/5+1 = 4x/15+7

Inessa05 [86]

Answer:

$x=18$

Step-by-step explanation:

$\frac{3x}{5} +1=\frac{4x}{15} +7$

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$\frac{9x}{15} -\frac{4x}{15} =6$

$5x/15=6$

$5x=90$

$x=18$

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3 years ago

Write the equation of a line that is perpendicular to the given line and that passes through the given point. y=3/4x-9;(-8,-18)

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3 years ago

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Dvinal [7]

Since the graph of the given functions is a straight line, the graph belongs to a linear function, as all linear functions have their graphs as a straight line. For a non-linear function the graph is not a straight line.

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3 years ago

Multiply.Write each product in simplest form

xz_007 [3.2K]

1. 5/16
2. 1/3
3. 3/20
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3 years ago

Read 2 more answers

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