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Svetlanka [38]
2 years ago
7

A map has a scale of 1 cm : 9 km. If two cities are 2 centimeters apart on the map, what is the actual distance between the citi

es?
Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
7 0

Answer:

18 kilometers

Step-by-step explanation:

If each 1 cm represents 9 kilometers.

How many would 2 cm represent?

x =  \frac{9 \times 2}{1}  = 9  \times 2 = 18

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There are 10 red marbles and 20 green marbles in a bag. Colleen says the ratio of red marbles to green marbels is 19 to 20. Frit
nadezda [96]
Fritz is correct, in that the ratio is 1:2

Think of the ratio as a division

10:20 = 10/20

When you divide 10 with 20, you will get a decimal (or simplified fraction)

10/20 = 0.5

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3 years ago
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2 years ago
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Two more than 4 times a number is -18
Agata [3.3K]
4x + 2 = -18
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3 years ago
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Matt Walker is paid weekly and earns a 3.5% straight commission on sales of $6,500 or less and 5% on sales in excess of $6,500.
Mumz [18]
His sales were $7558.82.

Let x be the amount of sales greater than 6500.  He earns 5% commission on these sales, which we represent as 0.05x.

Since he earns 3.5% on sales less than or equal to 6500, we can represent this as 0.035(x-6500).

Together, his commission was 415:
0.05x+0.035(x-6500) = 415

Using the distributive property, we have
0.05x+0.035*x-0.035*6500 = 415
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Combining like terms gives us
0.085x - 227.5 = 415

Add 227.5 to both sides:
0.085x - 227.5 + 227.5 = 415 + 227.5
0.085x = 642.5

Divide both sides by 0.085:
0.085x/0.085 = 642.5/0.085
x = 7558.82
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3 years ago
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