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ladessa [460]
3 years ago
11

Mrs. Benton treats herself to a day at Nail Spa. The services she receives are a manicure for $25 and a pedicure for $30. She al

so asks for a special nail polish that costs $5.00 extra. She decides to leave a 30% tip. Which expression can be used to calculate the tip?
Mathematics
2 answers:
Mariulka [41]3 years ago
4 0

Answer:

guys idk

Step-by-step explanation:

sleet_krkn [62]3 years ago
3 0
(60x30) / 100 =
1800 /100 =
18
$18 for tip
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Three varieties of coffee Coffee​ A, Coffee​ B, and Coffee C are combined and​ roasted, yielding a 55​-lb batch of coffee beans.
Klio2033 [76]

Coffee A is 12.241 pounds, Coffee B is 18.269 pounds and Coffee C is 24.482 pounds.

<h3>What is Algebra?</h3>

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

Let a pounds of coffee A needed

Let b pounds of coffee B needed

Let c pounds of coffee C needed

c= 2a.................(1)

a+ b+c= 55..........(2)

and, 14.99 a+ 13.99 b + 10.39 c /55 = 12.61

1499a + 1399 b + 1039 c = 69,355...............(3)

Subtract (2) from (3), we get

  1499 a+ 1399 b + 1039 c= 69355

-  1039 a - 1039 b - 1039 c = 57145

_____________________________

  460 a + 360 b = 12210

 46a+ 36 b = 1221

b= 1221/ 36 - 46 a/ 36

b= 407 / 12 - 23 a / 18

Put b in Equation (2)

a + 407 / 12 - 23 a / 18 + 2a= 55

-5a / 18 + 2a + 407/ 12 = 55

31a/ 18 = 253/ 12

a= 4554 / 372

a = 2277/ 186

a= 759/ 62

a= 12.241

and, c=2a = 24.482

b= 33.91 - 15.641

b= 18.269

Learn more about Algebra here:

brainly.com/question/24875240

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7 0
1 year ago
To subtract 136-87 using mental math Aaron subtract 136-90and go 46 what should he do next?
atroni [7]

Answer:

Subtract 3 from it to get 43

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Mercury orbits the Sun in 87 24/25 Earth days. Venus orbits the Sun in 224 7/10Earth days, and Mars
valentina_108 [34]
87 24/25 as a decimal is 87.96

224 7/10 as a decimal is 224.7

686 49/50 as a decimal is 686.98 
8 0
3 years ago
Fatima opened a savings account with $7,500. She decided to deposit that same amount semiannually. This account earns 3.975% int
docker41 [41]

Answer:

A = $11117.25

Step-by-step explanation:

Given the following data;

Principal = $7,500

Interest rate = 3.975% = 3.975/100 = 0.03975

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Time, t = 10 years

To find the future value, we would use the compound interest formula;

A = P(1 + \frac{r}{n})^{nt}

Where;

A is the future value.

P is the principal or starting amount.

r is annual interest rate.

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t is the number of years for the compound interest.

Substituting into the equation, we have;

A = 7500(1 + \frac{0.03975}{2})^{2*10}

A = 7500(1 + 0.019875)^{20}

A = 7500(1.019875)^{20}

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3 0
3 years ago
What is the volume of a sphere that has a 10 m diameter
Mars2501 [29]
When the diameter is 10 m the volume is <span>523.6 m^3</span>
7 0
4 years ago
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