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3 years ago

Ariel's bill for brunch at a restaurant was $76. She left a 15% tip. What was the amount of the tip?

Mathematics

2 answers:

Kruka [31]3 years ago

7 0

76 times .15 equals 11.4. The tip is $11.40

BaLLatris [955]3 years ago

4 0

76 times.15equals 11.4. The tip is $11.40

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To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of

postnew [5]

Answer:

The student's GPA for that term is 3.07

Step-by-step explanation:

So this is a problem where we need to compute a weighted arithmetic mean.

To compute the weighted arithmetic mean of a set, we need to multiply each value of the set by their respective weight, add them, and then divide by the sum of the weights.

I will write the set in a {V,W} way, where V is the value(the grade) and W is the weight of V.

So your set G will be

G = {{3.8, 5}, {1.8,3}, {3.1,5}, {3.1,5}}.

Multiplying each value by it's respective weigth and then adding, we have:

3.8*5 + 1.8*3 + 3.1*5 + 3.1*5 = 19 + 5.4 + 15.5 + 15.5 = 55.4

The sum of the weigths is 5 + 3 + 5 + 5 = 18

So the student's GPA for that term, rounded to two decimal places, is: 55.4/18 = 3.07

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3 years ago

Nicole is half as old as Donald. The sum of their ages is 72. <br><br> How old is Nicole, in years?

bixtya [17]

Your gonna divide 72 by 2 so therefore you get 36
So that equals to Nicole’s age

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3 years ago

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Which of the following expressions could be interpreted as "a number times negative seven added to five equals two"?

masha68 [24]

Answer:

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Step-by-step explanation:

a number times negative seven added to five equals two

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How many solutions does the system of equations below have?

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Step-by-step explanation:

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maks197457 [2]

[|] Answer [|]

$\boxed{5 \ 1/9}$

[|] Explanation [|]

Rewrite the equation with parts separated:

8 + 7/9 - 3 - 2/3

Solve the whole number parts:

8 - 3 = 5

Solve the fraction parts:

7/9 - 2/3

Find LCD of 7/9 & 2/3

7/9 - 6/9 = 1/9

5 + 1/9 = 5 1/9

$\boxed{[|] \ Eclipsed \ [|]}$

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3 years ago