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djyliett [7]
3 years ago
15

Emily has a coupon for 20 percent off her purchase. She finds a backpack she likes on the discount rack. It’s original price is

$60, but everything on the rack comes with a 30 percent discount. Emily says, “thirty percent and twenty percent make fifty percent so ur will cost $30. Is emy correct?
Mathematics
1 answer:
Bas_tet [7]3 years ago
4 0
She’s incorrect I’m pretty sure u divide 20 and 60.
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How to solve 4x-3y=22,2x-y=10
Lady bird [3.3K]
Is that considered two equations?
4 0
3 years ago
Read 2 more answers
A college library has five copies of a certain text on reserve. Two copies (1 and 2) are first printings, and the other three (3
sleet_krkn [62]

Answer:

B) Outcomes in A = {3, 4, 5} .

C) Outcomes in B = {5, 15, 25, 125, 215} .

D) Outcomes in C = {3, 4, 5, 23, 24, 25} .

Step-by-step explanation:

We are given that a college library has five copies of a certain text on reserve. From which two copies (1 and 2) are of first printings, and the other three (3, 4, and 5) are of second printings.

Also, it is stated that a student will stop examining the books only when a second printing has been selected.

A) The outcomes in S are :

      <u> Number of outcomes</u>                                 <u>Selection of Outcomes</u>

                  1                                                                          3

                  2                                                                         4

                  3                                                                          5

                  4                                                                         13

                  5                                                                         14

                  6                                                                         15

                  7                                                                         23

                  8                                                                         24

                  9                                                                         25

                 10                                                                         123

                 11                                                                          124

                 12                                                                          125

                 13                                                                          213

                 14                                                                           214

                 15                                                                            215

Here outcome 123 means 1st copy of first printing is examined then 2nd copy of first printing is examined and then 3rd copy of second printing is examined and then the student stops.

B) <em>A denote the event that exactly one book must be examined.</em>

 So, the outcomes in A will be outcome number 1, 2 and 3 corresponding to selection 3, 4 and 5 of second printing because in these outcomes only one book is examined.

Hence, outcomes in A = {3, 4, 5} .

C) <em>B be the event that book 5 is the one selected</em>. It means all those outcomes in which book 5 was last examined. So, the outcomes in B will be outcome number 3, 6, 9, 12, 15 corresponding to selection 5, 15, 25, 125, 215

Hence, outcomes in B = {5, 15, 25, 125, 215} .

D) <em>C be the event that book 1 is not examined</em> which is outcome number 1, 2, 3, 7, 8, 9 corresponding to selection 3, 4, 5, 23, 24, 25 .

Hence, outcomes in C = {3, 4, 5, 23, 24, 25} .

6 0
3 years ago
Hey I need help pleasee!
kirill115 [55]

9514 1404 393

Answer:

  Africa

Step-by-step explanation:

In order, from lowest to highest, the low points are ...

  Antarctica < Asia < Africa < <em>North America</em> < South America < Europe < Australia

The lower continent on your answer choices list is Africa.

7 0
2 years ago
Pentagon ABCDE is shown on the coordinate plane below:
goblinko [34]
It's (5,2) , I took it already so here you go
4 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
kow [346]

Answer:

A'(0,0) and B'(0,7.5) and C'(12.5,7.5) and D'(12.5,0)

Step-by-step explanation:

<u><em>Find the coordinates of the point after dilation</em></u>

A'(0,0) and B'(0,7.5) and C'(12.5,7.5) and D'(12.5,0)

<em>I hope this helps you</em>

<em>:)</em>

6 0
2 years ago
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