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Mazyrski [523]
3 years ago
6

This is similar to another problem but read carefully... This is a little more challenging: 2 diamond rings and 4 silver rings c

ost $1880. A diamond ring and silver ring cost $880. How much does a silver ring cost? How much does a diamond ring cost?
Mathematics
1 answer:
ValentinkaMS [17]3 years ago
3 0

Answer:

$820

Step-by-step explanation:

D= Diamond Ring

S= Silver Ring

2D + 4S = 1880

D + S = 880

D = 880 - S

4S + 2(880 - S) = 1880

4S + 1760 - 2S = 1880

2S + 1760 = 1880

2S =  120

S = 60

880 - 60 = 820.

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stepan [7]

Hello!

First of all, let's divide.

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7 0
2 years ago
The quotient of a number t and 4.2 is at most 15.​
frosja888 [35]

Answer:

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Step-by-step explanation:

Quotient of two numbers also means the result of the two numbers after division.

If the quotient of a number t and 4.2 is at most 15., this can be expressed using the inequality;

\dfrac{t}{4.2}\leq  15 <em>(note that at most 15 means that the highest value we can have is 15 after taking the quotient of the number hence the reason of the inequality sign.)</em>

<em></em>

On solving the inequality for the variable t

\dfrac{t}{4.2}\leq  15\\\\multiply \ both \ sides \ by \ 4.2\\\\\dfrac{t}{4.2}* 4.2\leq  15 * 4.2\\\\t \leq 63

<em>Hence t is at most 63</em>

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