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Orlov [11]
3 years ago
6

Lin's father is paying for a $20 meal. He has a 30%-off coupon for the meal. After the discount, a 8% sales tax is applied.

Mathematics
1 answer:
Airida [17]3 years ago
8 0

Answer:

15.12

Step-by-step explanation:

Cost of meal = $20

Discount (coupon) = 30%

Amount of discount = 30% of $20

= 30/100 * 20

= 0.3 * 20

= $6

Amount paid after discount= initial cost of meal - discount

= $20 -$6

= $14

Sales tax =8%

Amount of sales tax = 8% of $14

= 8/100 * 14

= 0.08 * 14

= $1.12

Total amount paid = Amount paid after discount + Amount of sales tax

= $14 + $1.12

= 15.12

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Kellie ran 3 laps around the high school track if the total distancekellie ran was 7 1/3 miles how long is each lap around the t
agasfer [191]

Answer:

22 miles.

Step-by-step explanation:

7 1/3 ×3=22

8 0
2 years ago
Kenneth is inviting people to his parents' anniversary party and wants to stay at or below his budget of $6,000 for the food. Th
ohaa [14]
X= the number of adults
y=the number of children

Knenneth can´t afford more than $6000.

Therefore, the ineguality will be:
40x+15y≤6000

Answer: 40x+15y≤6000
7 0
3 years ago
Read 2 more answers
4x – 1 = 7x – 16<br><br> Solve the problem <br> (Show your work)
Katarina [22]

Answer:

x = 5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

4x - 1 = 7x - 16

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 4x on both sides:                    -1 = 3x - 16
  2. Add 16 to both sides:                             15 = 3x
  3. Divide 3 on both sides:                          5 = x
  4. Rewrite:                                                   x = 5

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    4(5) - 1 = 7(5) - 16
  2. Multiply:                               20 - 1 = 35 - 16
  3. Subtract:                              19 = 19

Here we see that 19 does indeed equal 19.

∴ x = 5 is a solution to the equation.

6 0
3 years ago
Read 2 more answers
What is the next number and why ? 1,3,11,35,99,_
Vladimir79 [104]

Answer: 241

Step-by-step explanation:

This is a simple problem when using Pascal's triangle. First you look at 1 - 3, what is the difference in these 2 numbers? Its 2, then you look at 3 and 11, the difference is 8, then 11 and 35, the difference is 24. If you keep doing this you get; 2 8 24 64 142. Next you find out how these numbers are different. In the end you keep doing this until you get to the triangles point or the differences converge.

                                          1      3      11      35     99      <u>241</u>

                                             2      8     24       64    142

                                                6      16      40      78

                                                     10     24      38

                                                          14       14

In the end we get 14 but there is no difference in the numbers so we cant go any farther. Hope this helps!

6 0
3 years ago
Using a line of best fit, which of these would be a reasonable prediction for the population of Idaho in 2020?
Vika [28.1K]

Answer: I would have to say B

Step-by-step explanation: Because it is right along the line of that.

7 0
3 years ago
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