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3 years ago

I went to a restaurant and gave the waitress a $15 tip. If the tip was 20% of the dinner how much was the dinner?

Mathematics

1 answer:

prohojiy [21]3 years ago

7 0

Answer:

Dinner only: $75

Dinner and Tip: $90

Step-by-step explanation:

If the tip was $15, and the tip was 20% of the price of dinner, then dinner was $75.

You can find this out by doing 15/20%, which should give you 75.

If the question requires you to add up the price of dinner and the tip, then the total price would be $90

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What is the answer to this question

Lady_Fox [76]

Answer:

The term rate refers to a quantity of one item in relation to another item used as a standard. A popular example is speed. Speed is a measure of distance traveled through time and is measured as meters per second. Another example is acceleration, which is a measure of speed through time or simply how fast an object is gaining speed and is measured in meters per second squared.

Step-by-step explanation:

Example: For example, if it is a mile, you count how many feet are in that mile.

5 0

2 years ago

Write an equation of the line that passes through (18, 2) and is parallel to the line 3y−x=−12

rodikova [14]

First isolate the "y" in the equation.

2y - x = -12 Add x on both sides

2y - x + x = -12 + x

2y = -12 + x Divide 2 on both sides to get "y" by itself

$y = \frac{-12 +x}{2}$

$y = -6 + \frac{x}{2}$

Your slope is $\frac{1}{2}$ .

For the equation of the line to be parallel to the given equation, the slopes have to be the same. So the parallel line's slope is also $\frac{1}{2}$

y = mx + b

$y = \frac{1}{2}x + b$

To find "b", you plug in the point (18,2) into the equation

$y = \frac{1}{2}x + b$

$2 = \frac{1}{2}(18) + b$

2 = 9 + b Subtract 9 on both sides

2 - 9 = 9 - 9 + b

-7 = b

Your equation is:

$y =\frac{1}{2}x - 7$

8 0

3 years ago

The measurement of the height of 600 students of a college is normally distributed with a mean of

ioda

Answer:

Step-by-step explanation:

We let the random variable X denote the height of students of the college. Therefore, X is normally distributed with a mean of 175 cm and a standard deviation of 5 centimeters.

We are required to determine the percent of students who are between 170 centimeters and 180 centimeters in height.

This can be expressed as;

P(170<X<180)

This can be evaluated in Stat-Crunch using the following steps;

In stat crunch, click Stat then Calculators and select Normal

In the pop-up window that appears click Between

Input the value of the mean as 175 and that of the standard deviation as 5

Then input the values 170 and 180

click compute

Stat-Crunch returns a probability of approximately 68%

5 0

3 years ago

I don’t understand??

wlad13 [49]

Answer:

$\huge\boxed{\sf x = 10}$

Step-by-step explanation:

Hypotenuse = x

Base = 4

Perpendicular = $\sqrt{84}$

<u>Using Pythagoras Theorem:</u>

$\sf H^2 = P^2 + B^2\\\\ x^2 = (\sqrt{84} )^2 + (4)^2\\\\x^2 = 84 + 16\\\\x^2 = 100\\\\Taking \ sq \ root \ on \ both \ sides\\\\x = 10\\\\\rule[225]{225}{2}$

Hope this helped!

7 0

3 years ago

A math recap workshop is provided to the first year students entering a city college. To evaluate the workshop effectiveness, a

user100 [1]

Answer:

Independent sample t test

Step-by-step explanation:

The Independent sample t test could be explained as a statistical test carried out in other to establish or examine if significant difference exists between two independent samples. That is the outcome of the samples do not depend on one another. Using the scenario described above, the difference between the same variable is measured for two different groups which is the ideal set up for an independent sample t test. The difference between test score for two independent samples (those who attended the workshop and those who did not) is being compared.

8 0

2 years ago