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3 years ago

Which of the following expressions could give the total amount of a $45 restaurant bill with a 15% tip added on?

Mathematics

1 answer:

vazorg [7]3 years ago

4 0

Answer:

$51.75

Step-by-step explanation:

Given

Total amount of bill, x= $45

Tip Percent=15%

⇒15% on $45 is to be paid extra as tip, other than the already paying $45

⇒Tip $=\frac{15}{100}\times x=\frac{15}{100} \times45=6.75$

So <em>total amount to be paid</em>= Bill+ tip

$= x + tip=x+\frac{15}{100} x=1.15x=1.15\times45$

=$51.75

You might be interested in

P is a rectangle with a length 40 cm and width x cm

romanna [79]

We know that

the length of Q is 25% more than the length of p
so
length Q=1.25*40--------> 50 cm
the area of Q is 10% less than the area of p
Area Q=50*y
Area P=40*x
so
50*y=0.90*[40*x]---------> 50*y=36*x-------> x/y=50/36---> 25/18

the answer
the ratio x:y is 25:18

4 0

3 years ago

Beverly says f(a)=9.3 has multiple solutions. Stephanie says f(9.3)=a has multiple solutions. Who is correct?

RUDIKE [14]

Beverley is right

explanation

there is 3 answers

0,9,3

hope this helps

cauculator link: https://www.symbolab.com/solver/functions-calculator

from Kenny

all the best!

4 0

2 years ago

The price for 7 lb of potatoes is $5 what is the price per pound.

Thepotemich [5.8K]

Answer:

The answer is $1.4.

6 0

3 years ago

An HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you th

aliya0001 [1]

Answer:

0.227 = 22.7% probability that the mean printing speed of the sample is greater than 18.12 ppm.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .