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kipiarov [429]
3 years ago
6

an architect created a scale model of a building. the length of the model is 15 inches. the scale factor used to create the mode

l is 1/20. what is the actual length of the building?
Mathematics
1 answer:
navik [9.2K]3 years ago
4 0
The length of  model is ......15 inch
if the scale factor is 1/20
it means 1/20=15/h
h=12*15=300
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6 0
2 years ago
A dairy sells $3 and $5 ice creams. In one day they sell 50 ice creams earning a total of $180. How many of each type of ice cre
murzikaleks [220]
We are going to make simultaneous equations.
x will be our $3 ice cream and y will be our $5 ice cream

Equation1 ----            x + y = 50   (the sum of all the ice creams they sell)
Equation 2 ----          3x + 5y = 180  Sum of all the $3 and $5 ice creams is $180
Since we can't solve for both variables we will put one of the variables in terms of the other.
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3 (-y +50) + 5y = 180   
Now I will use the distributive law on the 3 and what's in the parentheses:
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Now I will combine like terms (the -3y and the 5y)
2y + 150 = 180
Now subtract 150 from both sides of the equation
2y = 30
Divide both sides by 2
and get y= 15 They sold 15 ice creams that cost $5 each
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x + 15 = 50    Now subtract 15 from both sides  x = 35
Since x represents the $3 ice creams, they sold 35 of those.
Check:
35 X 3 = $105
15 x 5  = +  <u>75
</u>               $180  

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Answer:

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When each side of an equation has been simplified, equations that have the same coefficients and the same constants on each side have infinitely many solutions

7 0
2 years ago
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stepan [7]
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Hope this helps! :)
4 0
2 years ago
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