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erma4kov [3.2K]
2 years ago
5

On a map, a drawing of a

Mathematics
1 answer:
Elina [12.6K]2 years ago
7 0
So for this problem, inches and feet is something we know can fit into each other. 12 inches = 1 foot. To get the area in inches, multiplying 10x6 = 60 inches squared. When we divide that by 12 to get the amount of feet, the answer is 5 ft squared. 60/12 = 5 Then we would take the 5 and divide 540 by 5 to get the amount of square kilometers in each foot. 540/5 = 18 So in 1 foot, there are 18 square kilometers.

I hope this helped and that I got the correct answer for you as well :)
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last year the depth of the river was 4.2 feet deep. this year it dropped 24% find the depth of the river this year
zzz [600]

Answer:

3.2

Step-by-step explanation:

7 0
2 years ago
A rectangle is 3 units wide and 4 units long. How long is its diagonal
nirvana33 [79]
If x is length of the diagonal then 

x^2 = 3^2 + 4^2  = 25

x = sqrt25 =  5

Diagonal is 5 units long
7 0
3 years ago
What is the measure of arc ac 69° in degree?
Alenkinab [10]
1) 1 degree = 1*10^-10 A= 6.9 * 10^-9 nm
3 0
3 years ago
The sum of three numbers 13. The sum of twice the first number, five times the second number, and six times the third number is
Kruka [31]

Answer:

The three numbers are 56/5, -39/5 and 78/5.

Step-by-step explanation:

EQUATION 1:

First number: x

Second number: y

Third number: z

x + y + z = 19

EQUATION 2:

Sum of following is 77

Twice the first number: 2x

5 times the second number: 5y

6 times the third number: 6z

So, 2x + 5y + 6z = 77

EQUATION 3:

Difference between first and second number is 19.

x - y = 19

Equation 1: x + y + z = 19

Equation 2: 2x + 5y + 6z = 77

Equation 3: x - y = 19

1. Find x in terms of y

x - y = 19

x = 19 + y

2. Find y in terms of z by putting the value of x in first and second equation

  x + y + z = 19

  (19 + y)+ y + z = 19

  2y + z = 19 - 19

  2y + z = 0

  y = -z/2

and

2(19+y)+5y+6z=77

now putting the value of y in this equation

2(19-z/2)+5(-z/2)+6z=77

38 - z -5z/2 +6z = 77

5z/2 + 38 = 77

5z/2 = 39

z = 78/5

Now, y = -z/2

y = (-78/5)/2

y = -39/5

and  x = 19 + y

x = 19 - 39/5

x = 56/5

Therefore, the three numbers are 56/5, -39/5 and 78/5.

Keyword: Sum

Learn more about sum at

brainly.com/question/10666510

brainly.com/question/4034547

#LearnwithBrainly

7 0
3 years ago
Read 2 more answers
X^2-4x^2y^2+y^2+2*x*y
stealth61 [152]

Answer:

(x + y - 2xy)*(x + y + 2xy)

Step-by-step explanation:

x^2-4x^2y^2+y^2+2*x*y

=x^2 + 2xy + y^2 - (2xy)^2

=(x + y)^2 - (2xy)^2

=(x + y - 2xy)*(x + y + 2xy)

6 0
3 years ago
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