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nataly862011 [7]
3 years ago
5

How do I do this the easiest way?

Mathematics
2 answers:
Marina CMI [18]3 years ago
4 0
Add the 3 item totals, then divide that number by 100, then, take that number and multiply by 9 (this gets the tax total). then you are going to want to add the total of the 3 items, and the tax amount, and you have your answer. do this with all the peoples items :)
Step2247 [10]3 years ago
4 0
The easiest way to do this would be to add up the total cost of each person's meal (for example, in the first one you would do $3.79 + $9.89 + $5.99 = $19.69).

Then turn the percentage into a decimal (put a decimal point after the number, so for example 9.0% and then move the decimal point to place to the left to turn it into a decimal. So 9% become 0.09).

Lastly, times the total amount you got from the first part to the decimal you got in the second part ($19.69 x 0.09 = 1.7703, which you rounds to $1.77)

So your tip is $1.77 for the first person. Repeat this process for each one and you can't fail, cheers!
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The price of a technology stock has dropped to $9.71 today. Yesterday's price was $9.80. Find the percentage decrease.
Vadim26 [7]

Answer:

The percentage decrease = 0.9%

Step-by-step explanation:

  • Initial value = $9.80
  • Final value = $9.71

Using the formula

Percentage Decrease = [ (Initial Value - Final Value) / |Initial Value| ] × 100

                                    = [(9.80 - 9.71 ) / (9.80)] × 100

                                    = [0.09 / 9.80] × 100

                                    = 0.009 × 100  

                                    = 0.9%

Therefore, the percentage decrease = 0.9%

4 0
2 years ago
Determina la masa molar y el volumen que ocupa la siguiente sustancia CO2, si su masa es de 28 gr. *
balandron [24]

Answer:

Para el CO₂ sabemos que:

densidad = 0,001976 g/cm³

Sabemos que:

densidad = masa/volumen

Entonces, si tenemos una masa de 28 g, podemos escribir:

volumen = masa/densidad

volumen = (28g)/(0,001976 g/cm³) = 14,170 cm^3

Para obtener la masa molar (es decir, la masa de un mol de esta sustancia) simplemente sumamos la masa de un mol de cada componente.

Carbono: tiene una masa molar de 12 g/mol

Oxígeno: tiene una masa molar de 16 g/mol (y tenemos dos oxígenos)

entonces la masa molar va a ser:

masa molar = 12g/mol + 2*16g/mol = 44 g/mol

Es decir, un mol de CO₂, pesa 44 gramos.

7 0
3 years ago
In a class⅗ of the children are going to special event If there are 30 children in the class,how many are going​
irinina [24]

Answer:

18

Step-by-step explanation:

3/5 x 30

(3 times 30)divided by 5

= 18 children are going.

Hope this helps:-)

4 0
3 years ago
Which of the following inequalities is equivalent to 1 ≥ x?
svp [43]

Answer:

  x ≤ 1

Step-by-step explanation:

Swapping sides of the inequality requires reversing its sense.

If 1 is greater than x, then x is less than 1.

3 0
3 years ago
Read 2 more answers
Need help with this question ​
Hatshy [7]

Answer:

1. He added 5 instead of subtracted 5.

2. He should have subtracted 5.

3. 2 2/3

Step-by-step explanation:

3x+5=13

subtract 5 to both sides 3x=8

divide both sides by 3 x=8/3 or 2 2/3

8 0
2 years ago
Read 2 more answers
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