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GarryVolchara [31]
2 years ago
7

Find the total cost of a spa treatment that is $120, if you also pay 5% tax and 20% tip on the original cost

Mathematics
2 answers:
olya-2409 [2.1K]2 years ago
8 0

Answer:

$150

Step-by-step explanation:

5% of $120 is $6 and 20% is $24.

$6(tax) + $24(tip) + $120(original) = $150

just olya [345]2 years ago
6 0

Answer:

$150

Step-by-step explanation:

Additional 5% and 20% on the original cost is additional 25%

Total cost = 125% of 120

= (125/100)×120

= 150

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6 0
2 years ago
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Simplify 14 to the power of 15 over 14 to the power of 5
BartSMP [9]

Answer:

1. Use Quotient Rule

{14}^{15-5}

2. Simplify  

{14}^{10}

3 Simplify.

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Step-by-step explanation:

6 0
2 years ago
When you calculate the sample size for a proportion, you use an estimate for the population proportion; namely . A conservative
LuckyWell [14K]

Answer: A. 0.50

Step-by-step explanation:

The formula to find the sample size : n=p(1-p)(\dfrac{ z^*}{E})

, where p= Prior estimate of population proportion.

E= Margin of error

z* =Critical z-value.

When , we do not have prior estimate of population proportion , we use p= 0.5 because at p=0.5 it gives the maximum same sample size for the corresponding confidence interval and margin of error.

Therefore , the conservative value for n can be obtained by using p=0.50.

Therefore , the correct answer is A.0.50 .

5 0
3 years ago
Sarah bought a lawnmower for $320. She signed up for the buy now pay later plan at the store with the following conditions: $100
marishachu [46]
Cost of the lawnmower bought by Sarah = $320
Amount of down payment made by Sarah = $100
Amount paid by Sarah in 12 months = (12 * 25) dollars
                                                          = 300 dollars
Total amount paid by Sarah = (300 + 100) dollars
                                             = 400 dollars
Excess amount paid as interest by Sarah = (400 - 320) dollars
                                                                   = 80 dollars
Actual yearly rate of interest paid by Sarah = (80/320) * 100 percent
                                                                     = 25 percent
So 25% yearly interest was paid by Sarah. The correct option is option "C".
4 0
3 years ago
The library is 1.75 miles directly north of the school. The park is 0.6 miles directly south of the school. How far is the libra
kumpel [21]
If something is placed the way these places are(directly NORTH and the park is SOUTH) all you have to do is add your two values, lining up your decimal points. 1.75
            +.6
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4 0
3 years ago
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