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2 years ago

9

John an architect, used a scale factor of 1 inch = 20 feet to design a site plan. the actual park has been designed to be 18 fee

t long determine the length of the car park as depicted in the blueprint

1 answer:

lina2011 [118]2 years ago

3 0

Answer:12

Step-by-step explanation:

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How to solve the system of equation 500y-600x=2800 , 400y-400x=2400 by elimination

tatiyna

Answer:

$x=2$ and $y=8$

Step-by-step explanation:

Given:

Equation 1:

$500y-600x=2800$

Simplifying the above equation by dividing both sides by 100

$\frac{500y-600x}{100}=\frac{2800}{100}$

$\frac{500y}{100}-\frac{600x}{100}=28\\\\5y-6x=28$

Equation 2:

$400y-400x=2400$

Simplifying the above equation by dividing both sides by 400.

$\frac{400y-400x}{400}=\frac{2400}{400}$

$\frac{400y}{400}-\frac{400x}{400}=6\\\\y-x=6$

Now the system of equation is:

(1a) $5y-6x=28$

(2a) $y-x=6$

Solving by elimination

Multiplying equation (2a) with $-5$

$-5(y-x)=-5\times 6$

(2b) $-5y+5x=-30$

Adding equations (1a) and (2b) in order to eliminate $y$

$5y-6x=28$

+ $-5y+5x=-30$

We get $-x=-2$

∴ $x=2$

Plugging $x=2$ in equation (2a).

$y-2=6$

Adding $2$ both sides.

$y-2+2=6+2$

∴ $y=8$

7 0

3 years ago

Find the probability that in 200 tosses of a fair die, we will obtain at least 30 fives

ASHA 777 [7]

My calculator says that probability is about 76.34%.

6 0

3 years ago

What is the acceleration of this object? The object's mass is 60 kg.

Anarel [89]

The objects acceleration is 3.33 m/s^2. Hope this helps! :)

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3 years ago

Read 2 more answers

noah was asked to compute the product of two numbers. he misread the problem and entered the sum of the two numbers instead. luc

Vikki [24]

The other number is 1.25 .

proved to us , the first number is 5 .

let the other number is 'x' .

therefore we are having ,

the product of these numbers = 5x

the sum of these numbers = 5 + x

Also , the product of these two numbers is equal to the sum of these two numbers

so , 5x = 5 +x

4x = 5

x = 5/4 = 1.25

so the second number is 1.25

verification :

product of the numbers = 5 x 1.25 = 6.25

sum of the numbers = 5 + 1.25 = 6.25

Hence the result is correct

Therefore the other number is 1.25.

learn more about misread problems here :

brainly.com/question/14369018

#SPJ4

8 0

1 year ago

Which value make the equation 3x-6=36 true

elena-s [515]

Answer:

x=14

Step-by-step explanation:

To solve, we need to isolate the variable (x)

3x-6=36

Add 6 to both sides

3x=42

Divide by 3 on both sides

x=14

14 is the value that make the equation true

Hope this helps! :)

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3 years ago

Read 2 more answers