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3 years ago

The scatterplot below shows the number of coupons that are used at the grocery store and amount of money that is saved.

Mathematics

2 answers:

Goryan [66]3 years ago

7 0

B. From what it shows the points are moving over and mainly up barely a few go down while going up in usage

Anna71 [15]3 years ago

6 0

Answer:

B. As coupon use increases, the amount of savings increases.

Step-by-step explanation:

We have been given a scatter plot and we are asked to choose the correct statement from our given choices.

We can see from our scatter plot that if we will draw a line of best fit, we can see that all the data points will be approximately equidistant from that line except some outliers.

We can also see that our given data trend has a positive relation as number of coupons are increasing, the amount of savings are also increasing.

Since the amount of savings increases with the increase in use of coupons, therefore, option B is the correct choice.

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lianna [129]

60 because she sold a total of 110

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3 years ago

Which set is closed under subtractionWhich answer choice shows that the set of irrational numbers is not closed under addition

vovikov84 [41]

Answer:

(a) Set of rational numbers

(b) $\pi + (-\pi) = 0$

Step-by-step explanation:

Solving (a): Set that is closed under subtraction

The solution to this is rational numbers.

For a set of number to be closed under subtraction, the following condition must be true

$a -b = c$

Where

a, b, c are of the same set.

The above is only true for rational numbers.

e.g.

$1 - 2 = -1$

$5 - 5 = 0$

$\frac{1}{2} - \frac{1}{4} = \frac{1}{2}$

$4 - 2 = 2$

The operations and the result in the above samples are rational numbers.

Solving (b): Choice not close under addition[See attachment for options]

As stated in (a)

For a set of number to be closed under subtraction, the following condition must be true

$a -b = c$

Where

a, b, c are of the same set.

In the given options (a) to (d), only

$\pi + (-\pi) = 0$ is not close under addition because:

$\pi$ is irrational while $0$ is rational

<em>In other words, they belong to different set</em>

8 0

3 years ago

Which statement is true about the value of |-14|?

kondor19780726 [428]

It is the distance between -14 and 0 on the number line

6 0

3 years ago

Find all solutions in the interval [0, 2π). tan x + sec x = 1

svp [43]

Use the identity
sec^2x = 1 + tan^2 x
- so sec x = sqrt(1 + tan^2 x) then:-
tan x + sqrt( 1 + tan^2 x) = 1
sqrt ( 1 + tan^2 x) = 1 - tan x
1 + tan^2 x = 1 + tan^2x - 2 tan x
0 = -2 tanx

tan x = 0

x = 0, π
π is an extraneous root because sec 180 = -1
So the answer is 0 degrees

6 0

3 years ago

Help pls I need help pls

-Dominant- [34]

What are you supposed to do?

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4 years ago