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salantis [7]
3 years ago
11

Estimate a 15% tip for a $26.40 restaurant bill

Mathematics
1 answer:
olchik [2.2K]3 years ago
7 0

Answer:

$4.00

Step-by-step explanation:

because 15% of 26.40 is 3.96 which is closest to $4.00

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Joe and Linda have the opportunity to purchase a new home. The house in Glen Oaks is currently worth $250,000 but is predicted t
Dmitry [639]

You can work out the percentage change and that would help you work out the rate of appreciation :)

The formula is ((new value - old value)/old value) * 100.

So you do \frac{270,000 - 250,000}{250,000} \times 100 = 8\%

Therefore the rate of appreciation is 8% p/a.

7 0
3 years ago
Solve for x: 2x + 3 + (-1) = x + 5
faust18 [17]

Answer:

x=3

Step-by-step explanation:

2x-x=5-3+1

x=3

I think that's it

5 0
3 years ago
Two stockings have different amounts of candy canes. The girl said to the boy, "if I give you one of my candy canes, we'll have
maria [59]

Answer:

girl = 7

boy = 5

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
2500 + 20%=what's the answer
zysi [14]

Answer:

  as written: 2500.2

  as intended: 3000

Step-by-step explanation:

20% = 0.2, so adding 0.2 to 2500 gives 2500.2

_____

We suspect you want to add 20% of 2500 to 2500. That is ...

  2500 + 20%×2500

  = 2500 + 0.20×2500

  = 2500 + 500

  = 3000

_____

<em>Comment on percentages</em>

A percentage is a pure number. It is a ratio of like quantities, so has no units.* A <em>useful</em> percentage always has a base. That is, it is a percentage <em>of something</em>. Sometimes that base may be unclear or unstated, in which case the percentage might very well be considered to be meaningless.

In any event, a percentage is simply a (unitless) fraction. The "%" symbol means the same thing as "/100", so 20% means 20/100 = 2/10 = 1/5.

The very clear math expression 2500 +20% means simply 2500 + 1/5, which is the mixed number 2500 1/5 or the decimal value 2500.2. Usually, when we want to add a percentage to some value, we want the percentage to be <em>of the original value</em>. When that is written as a math expression, it must show this:

  2500 + 20% of 2500

  2500 + 20%×2500

  2500(1 +20%)

_____

* The concentration or potency of some medicines or other mixtures may be expressed as a percentage that is the ratio of one unit to a different unit, typically weight per volume. That is, a "0.1%" preparation may be 0.1 grams per 100 mL, for example. You have to read the label to determine whether this is the case. Mathematically, this is not a percentage, but is a non-standard use of the "%" symbol to indicate a ratio to 100 of something.

4 0
3 years ago
Joy bought 2 bath towels from a linen store, but returned 3 hand towels. Kay bought 3 bath towels and 3 hand towels. Joy's bill
nevsk [136]

Answer:

Bath towels: $10 Hand towels: $5

Step-by-step explanation:

If Joy bought two bath towels, that are $10 each that's $20 total; but she returned 3 hand towels that cost $5 and $15 total. 20-15=5

3 0
3 years ago
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