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MrRissso [65]
3 years ago
11

For the following real-world examples, determine whether each situation represents a percent increase or a percent decrease. ( i

ncrease or decrease )
Sales tax on an item is a percent .

A discount on an item is a percent .

A tip on a bill is a percent
Mathematics
1 answer:
VikaD [51]3 years ago
4 0

Answer:

  1. increase
  2. decrease
  3. increase

Step-by-step explanation:

  • A sales tax is ALWAYS an increase. That's why governments use sales taxes.
  • A discount is ALWAYS a decrease. That's it's definition. You are being given a break.
  • A tip is meant to supplement the pay someone gets. It's an increase from your point of view.
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Please please please help me with math
aivan3 [116]

Answer:

30 dollars

Step-by-step explanation:

The y-intercept is 15 and the slope is 30

How?

slope = change in y/change in x

4 0
3 years ago
1-2 Attributes of Functions
natita [175]

Given:

The function is

f(x)=7x+11

To find:

The domain, range, and intercepts of the function.

Solution:

We have,

f(x)=7x+11

It is a linear function, and domain and range of these types of functions  are all real numbers.

Domain:(-\infty,\infty)

Range:(-\infty,\infty)

Put x=0 in f(x), to find the y-intercept.

f(0)=7(0)+11

f(0)=0+11

f(0)=11

So, the y-intercept is 11.

Put f(x)=0 in f(x), to find the x-intercept.

0=7x+11

0-11=7x

-11=7x

Divide both sides by 7.

\dfrac{-11}{7}=x

So, the x-intercept is \dfrac{-11}{7}.

Therefore, Domain:(-\infty,\infty), Range:(-\infty,\infty), x-intercept : (\dfrac{-11}{7},0), y-intercept :11.

3 0
3 years ago
Let a and b be rational numbers. Then by definition
ohaa [14]

Answer:

The product of two rational numbers is a rational number

Step-by-step explanation:

I'll quickly recap the proof: a rational number is, by definition, the ratio between two integers. So, there exists four integers m,n,p,q such that

a=\dfrac{m}{n},\quad b=\dfrac{p}{q}

If we multiply the fractions, we have

ab = \dfrac{mp}{nq}

Now, mp and nq are multiplication of integers, and thus they are integers themselves. So, ab is also a ratio between integer, and thus rational.

6 0
3 years ago
Read 2 more answers
. Choose the correct means and standard deviations for the Sincere and Insincere conditions. Make sure to round to two decimal p
tensa zangetsu [6.8K]

Answer:

C. The rudely disagrees condition has a mean of 4.16 and a standard deviation of 0.85 while the politely disagrees condition has a mean of 3.82 and standard deviation of 0.97

Step-by-step explanation:

The given data is  

                                          x`             Std. Dev      

R. disagrees                  4.16       0.854        

P. disagrees                 3.82       0.967        

From this data we see that the R. disagrees has a mean of 4.16 and standard deviation of 0.854

while

the P. disagrees has a mean of 3.82 and standard deviation of 0.967.

Same figures are given only in option C because

Rounding 0.854 gives 0.85

Rounding 0.967 gives 0.97

So only option C is the best choice.

C. The R. Disagrees condition has a mean of 4.16 and a standard deviation of 0.85 while the P. Disagrees condition has a mean of 3.82 and standard deviation of 0.97

8 0
3 years ago
What is the circumference of a circle that had a radius of 4 inches? Use 3.14 for π. Explain how you calculate the answer. Be su
Bad White [126]

Answer: 8pie or 25.12

Step-by-step explanation:

r=4

diameter equals radius times 2.

d=8

Circumference formula = diameter times pie

c= 8 (diameter) times 3.14 or pie

so that’s how you get 25.12 or 8pie

5 0
4 years ago
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