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Y_Kistochka [10]
2 years ago
12

A television and DVD player cost a total of 1132. The cost of the television is three times the cost of the DVD player. What is

the cost of each item?
Mathematics
1 answer:
lubasha [3.4K]2 years ago
7 0
Let x rep cost of dvd in $
so the cost of tv is 3x
and x + 3x = 1132
4x=1132
x=1132/4
x= 283 and 3x=3(283)=849
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Emma was about to finish grocery shopping when she noticed that cans of soup were on sale. Her total bill for groceries would be
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Answer:

3rd option: B(C)= 1.79C +86.03

Step-by-step explanation:

Total bill

= cost of cans(number of cans) +cost of other groceries

Let the cost of other groceries be G, and the cost of cans be X.

Given that number of cans= C,

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2X+G= 89.61 -----(1)

If 5 cans were purchased,

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(2) -(1):

(5X +G) -(2X +G)= 94.98 -89.61

5X +G -2x -G= 5.37

3X= 5.37

X= 5.37 ÷3 <em>(</em><em>÷</em><em>3</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

X= 1.79

Subst. X= 1.79 into (1):

2(1.79) +G= 89.61

3.58 +G= 89.61

G= 89.61 -3.58 <em>(</em><em>-3.58</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

G= 86.03 <em>(</em><em>simplify</em><em>)</em>

Total bill

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Multiplying the exponents:

(6n)^{\frac{1}{3}}

Writing in radical form we finally have the result:

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Answer: {(MBV), (MBH) , (MEV) , (MEH) , (OBV), (OBH) , (OEV) , (OEH)}

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