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Advocard [28]
3 years ago
7

A new cell phone has a purchase price of $225. With the extended warranty, the total cost comes to $289. What

Mathematics
2 answers:
Dafna1 [17]3 years ago
5 0
Sorry, I am not sure but it is either A. 28% or B. 22%
Elenna [48]3 years ago
4 0

Answer:

The answer would be Letter A which is 28%

Step-by-step explanation:

Took the practice on edge 2020 and got it correct.

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Please Help!!!
Natalka [10]
From the equation
{x}^{2}  - 10x + 25 = 0
We can see that 25 is 5 × 5, and 10 is 5 + 5, so the equation simplifies to
(x - 5)(x - 5) = 0 \\  {(x - 5)}^{2}  = 0
which then we use to set each parentheses to equal 0
(x - 5) = 0 \\ x = 5
Since both parentheses are the same, there is only one solution: C. 1 real number solution
4 0
3 years ago
Please Help!? This is due tomorrow
matrenka [14]

Answer:

question 3 is alternate interior angles!

7 0
3 years ago
Read 2 more answers
Please help with this
otez555 [7]

Step-by-step explanation:

multiply 455 by 0.20

convert percentage to decimal

20% = 0.20 ( multiply by 10^-2)

why does this work?

convert to a fraction

20/100 ( this is also how you get decimal)

simplify 20/100 = 1/5

so multiplying 455 by 0.20 is the same as dividing by 5

4 0
3 years ago
The product of the sum and the difference of two numbers equals the difference of their squares
Lisa [10]

(a+b)(a-b)=(a)(a)+(a)(-b)+(b)(a)+(b)(-b)\\\\=a^2-ab+ab-b^2=a^2-b^2

Used\ distributive\ property

8 0
3 years ago
Um estudante fez algumas provas em seu curso e obteve as notas 13, 34, 45, 26, 19, 27, 50, 63, 81,76, 52, 86, 92 e 98 a sua nota
AlladinOne [14]

Answer:

the mean is 54.428571428571<-------( what i think you are looking for )

the median is 51

the modes are 13, 19, 26, 27, 34, 45, 50, 52, 63, 76, 81, 86, 92, 98

Step-by-step explanation:

list all the numbers from greatest to least and the easiest way is to just cross them off left to right until you come up to one or two numbers. if one, that is your median. If two then add them up and divide them by two. We only had one, so the median is 51!

Hope this helped!

7 0
4 years ago
Read 2 more answers
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