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Ivan
4 years ago
8

A hardware store is offering 20 light bulbs at a total cost of $71.02, which

Mathematics
1 answer:
stepan [7]4 years ago
7 0

Answer:

Cost of a single light bulb is $3.34

Step-by-step explanation:

Value of sales tax = 6% ×$71.02

= $4.2612

Total cost of bulb before tax = Total cost of bulb - Value of sales tax

= $71.02 - $4.2612

= $66.7588

Value of a single light bulb = Total cost of bulb before tax ÷ Total number of light bulbs

= $66.7588 ÷ $20

= $3.33794

= $3.34 Approximately.

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Levart [38]

Answer:

31.4 cm

Step-by-step explanation:

Let C be the circumference and r be the radius of the circle.

\therefore \: C = 2\pi \: r  \\  \hspace{19 pt}= 2 \times 3.14 \times 5 \\ \hspace{19 pt} = 3.14 \times 10 \\ \hspace{19 pt} = 31.4 \: cm \\

8 0
3 years ago
Arial says that, for any pair of linear relations, if the coefficients of the y-terms are equal and the coefficients of the x-te
wel

Answer:

<h3>a. Give an example for which Arial's claim is true.</h3>

If linear relations have equal coefficient about the independent variable, then those linear relations are parallel. For example, y=3x+4 and y=3x-5.

Notice that the coefficient of the dependent variable must be also equal, otherwise it would change the slope of the expression and they wouldn't be parallel.

<h3>b. Give an example for which Arial's claim is false. </h3>

The statement is not false.

<h3>c. Suggest an improvement to Arial's claim.</h3>

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4 0
3 years ago
Need Help balancing the 3 questions on top
Scrat [10]

Answer:

4Na + 1O2 > 2Na2O

SF6 > 1S + 3F2

2FE2O3 > 4FE + 3O2

Step-by-step explanation:

1. Identify the Products and Reactants(always do O2 last)

2. determine how many atoms of each element are present on each side of the equation

3. Add Coefficients and never change the subscripts. If there's a coefficient in front of any compound, it is distributed to both elements.

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4 years ago
What is the value of c? <br> A.34 <br> B.68<br> C.38<br> D.71
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Answer:

gtfcxadx

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8 0
4 years ago
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Harrizon [31]
30.007

300/10=30
7/1000=.007

30+.007=30.007
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3 years ago
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