The tip for excellent service in a restaurant is 20 for every 100 of the meal what is the total bill (cost of meal plus tip) for a 60 meal?

QUESTION POSTED AT 19/02/2020 - 02:34 PM

Answered by admin AT 19/02/2020 - 02:34 PM

I would think the tip would be 15 wich would make the meal all together 85.
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Related questions

A random sample of 125 students is chosen from a population of 4,000 students. If the mean IQ in the sample is 100 with a standard deviation of 8, what is the 98% confidence interval for the students' mean IQ score?

Answer: 98.33 - 101.67


Step-by-step explanation:

The given Sample mean n= 100  

Standard deviation\sigma=8

Mean IQ in the sample \bar{x}=125

Standard error of mean = \frac{\sigma}{\sqrt{\bar{x}}}

Standard error of mean = \frac{8}{\sqrt{125}}

Thus, standard error =\frac{8}{11.180}

Standard error of mean (SE)= 0.7155  

We know that  z - score for 98% confidence interval is 2.33 .

Now, 98% confidence interval will be

n-z(SE) and n+z(SE)

=100-(0.7155)(2.33)\ and\ 100+(0.7155)(2.33)  

=100-1.66726\ and\ 100+1.66726

=98.33274\ and\ 101.667

Hence, the 98% confidence interval for the students' mean IQ score will be 98.33 - 101.67



ANSWERED AT 31/03/2020 - 10:47 AM


QUESTION POSTED AT 31/03/2020 - 10:47 AM

How can you quickly calculate 20 percent of any bill amount?

First, convert the percent into a decimal. To do this, simply more the % sign two places to the left and make it into a decimal point.

20% = 0.20

Then we will let x be our bill amount.

Then multiply 0.20 and x together to get your answer.

So, 0.20 * x is your answer.

ANSWERED AT 31/03/2020 - 10:46 AM


QUESTION POSTED AT 31/03/2020 - 10:46 AM

20 points! Please help!!

In order to find the interquartile range you must subtract the highest number from the lowest number

ANSWERED AT 31/03/2020 - 10:43 AM


QUESTION POSTED AT 31/03/2020 - 10:43 AM

What's the square root of 100

The square root would be ten because  10^2 power equals 100

ANSWERED AT 31/03/2020 - 10:42 AM


QUESTION POSTED AT 31/03/2020 - 10:42 AM

Norman is shipping 2 boxes. the first box weighs 4180 grams and the second box weighs 820 grams. if shipping costs $6.43 per kilogram. how much does Norman spend on shipping?

1000 grams in a kilogram, so it's 5x6.43, which equals 32.15

ANSWERED AT 31/03/2020 - 10:42 AM


QUESTION POSTED AT 31/03/2020 - 10:42 AM

Pablo ran for president of the chess club, and he received 36 votes . there about 60 members in the club what is the percentage of the club members that voted for Pablo

68% voted for pablo because of 60 being 100 and 30 being 50 so just did the math and got 68%


ANSWERED AT 31/03/2020 - 10:41 AM


QUESTION POSTED AT 31/03/2020 - 10:41 AM

Over the last 12 month, Petco has lost a total of $1824.00 due to shoplifting. Write and solve an equation that shows how much money Petco lost each month. ( Since they have lost the money, remember that you need to use negative integers to represent the situation correctly.)

Take y=mx+b  
let x=years and 
y=lost money

then divide 1824 by 12 = 152
and since it is a loss make it into -152
and insert it for m as the constant rate of loss per month
your answer should be y=-152x.
if the store has a starting amount of money plug that into b.

ANSWERED AT 31/03/2020 - 10:40 AM


QUESTION POSTED AT 31/03/2020 - 10:40 AM

Nigel and Mia are searching for a treasure chest under water. The straight line distance between them is 100 meters. Given the angles in the diagram, who is closer to the treasure chest and why? a) Nigel is closer because his distance to the chest is opposite the larger angle. b) Mia is closer because her distance to the chest is opposite the smaller angle. c) Nigel is closer because his distance from the chest is 100 meters. d) Mia is closer because her distance from the chest is 100 meters.

The answer is b) Mia is closer because her distance to the chest is opposite the smaller angle.

In the relationship of triangle sides and its angles, the shortest side will always be opposite to the smallest interior angle. Furthermore, the largest side will always be opposite to the largest interior angle. Since Mia's distance to the treasure chest is opposite to the smaller angle 65
°, then she is much closer to the chest. 

ANSWERED AT 30/03/2020 - 01:31 AM


QUESTION POSTED AT 30/03/2020 - 01:31 AM

A DVD rotates through an angle of 20\pi radians in 1 second. At this speed, how many revolutions does the DVD make in 2 minutes?

There are 60 seconds in 1 minute, thus 120 seconds in 2 minutes
and one revolution is just one-go around the circle or 2π

thus   \bf \cfrac{20\pi }{secs}\cdot \cfrac{120\ secs}{2mins}\cdot \cfrac{revolution}{2\pi }

ANSWERED AT 29/03/2020 - 06:34 PM


QUESTION POSTED AT 29/03/2020 - 06:34 PM

40 + 20 + 10 + … ; n = 10 Find the sum of each finite geometric series.

I've attached a picture below of the formula for a finite geometric sequence. It includes an infinite geometric sequence formula for your reference, too.

a_1 = 40
r(ratio)= \frac{1}{2}
n=10

Plug in the values. 

S_{10}=40*( \frac{1- \frac{1}{2}^{10} }{1- \frac{1}{2} } )
S_{10}=40*( \frac{1- \frac{1}{1024} }{\frac{1}{2} })
S_{10}=40*( \frac{\frac{1023}{1024} }{\frac{1}{2} })
S_{10}=40*1.998046875
 S_{10} = 79.921875
S₁₀ ≈ 79.92

ANSWERED AT 29/03/2020 - 06:31 PM


QUESTION POSTED AT 29/03/2020 - 06:31 PM

I need help to find the cost of shirts and how much I bought?

If 2 is 25 then 1 is 12.5
12.5x 9 is 112.50
and 87.50/12.50 is 7 so theres the 2 boxes

ANSWERED AT 29/03/2020 - 06:30 PM


QUESTION POSTED AT 29/03/2020 - 06:30 PM

At a rugby tournament, each player on the top two teams receive medals. If 66 medals are purchased for the tournament, and each team has the same number of players, write an equation and then solve for the total number of medals needed for each team.

I'm not sure if this is what you're looking for, it's a pretty simple equation. What math are you in? This is how I would do it.
66=2x
Divide each side by 2
66/2=2x/2
33=x    
 (So each team would need 33 medals so that every player would get one)

ANSWERED AT 29/03/2020 - 06:28 PM


QUESTION POSTED AT 29/03/2020 - 06:28 PM

What is the fifteenth term of the sequence 5, -10, 20, -40, 80

5, -10, 20, -40, 80,
the pattern is (n*-2)
-160,  320, -640, 1280, -2560, 5120, -10240, 20480, -40960, 81920.

81,920 is your answer.

ANSWERED AT 29/03/2020 - 06:19 PM


QUESTION POSTED AT 29/03/2020 - 06:19 PM

100,000 using exponential notation

100,000 in exponential notation is 10 to the fifth power because if you count how many zero are in 100,000 is 5 and 10 is your base number. So 10 to the fifth power is the correct answer. Hope this helped ( :

ANSWERED AT 29/03/2020 - 06:18 PM


QUESTION POSTED AT 29/03/2020 - 06:18 PM

Suppose the apartment building has 100 apartments on each floor write the number of apartments in the building for each number of floors

It would be 100 apartments on each floor level.

ANSWERED AT 29/03/2020 - 06:14 PM


QUESTION POSTED AT 29/03/2020 - 06:14 PM

Assume current Federal Exemption is $3300.00. Bill Smith earns $37,500.00, is single; and the tax rate is 2 3/4 %. Calculate the tax

Tax rate is 2+3/4=2.75%
Income taxable
37,500−3,300=34,200
Tax accrued
34,200×0.0275=940.5

ANSWERED AT 29/03/2020 - 04:32 PM


QUESTION POSTED AT 29/03/2020 - 04:32 PM

What are the median and mode of the data set? 70, 80, 90, 100, 100, 50, 50, 100 A. median = 85 and mode = 100 B. median = 85 and mode = 50 C. median =

First, you need to put the numbers in order

50, 50, 70, 80, 90, 100, 100, 100

Mean: 80
Median: 85 (80+90=170/2= 85)
Range: 50
Mode: 100, appeared 3 times
Largest Number: 100
Smallest Number:50
Sum of all numbers: 640
Number Count: 8

So, your answer is A. M
edian: 85 and Mode: 100 
Hope this helps!!

ANSWERED AT 28/03/2020 - 12:58 PM


QUESTION POSTED AT 28/03/2020 - 12:58 PM

One train traveled south at 60 mph. The other traveled east at 50 mph. How far apart were the trains after 3 hours?

Let's called the train that traveled south train A, and the train that traveled east train B

After 3 hours, train A is 180 miles South
and Train B is 150 miles East

Using Pythagoras, distance between is sqrt(180^2 + 150^2)
30 sqrt(6^2 + 5^2) = 30sqrt(36 + 25) = 30sqrt 61 = 234.307 miles

ANSWERED AT 28/03/2020 - 12:55 PM


QUESTION POSTED AT 28/03/2020 - 12:55 PM

What is the approximate probability that the next flower (flower 11) will be at least 60 inches

Need more information. Thank You.

ANSWERED AT 28/03/2020 - 12:53 PM


QUESTION POSTED AT 28/03/2020 - 12:53 PM

Maria has $28 to spend on bottles of water Each bottle of water costs $1.29. There is a $1.50 recycling fee for buying bottled water.

28.150=26.5 is the amount you can spend on water. so 26.5/1.29= 20.54  so you can buy 20 bottles of water

ANSWERED AT 28/03/2020 - 12:52 PM


QUESTION POSTED AT 28/03/2020 - 12:52 PM