Rebecca and megan are shopping at store that sells jewelry, scarves, and purses. the cost of all the items at the store include tax.

rebecca buys some scarves that cost $5 each and 2 purses that cost $12 each. the cost of rebecca total purchase is $39. which equation can be used to find n, the number of scarves that rebecca buys?

a. 5+24n=39
b 5n+24=39
c (24+5)n=39
d 24*5+n=39

To answer this item, we let n be the number of scarves that Rebecca bought because the number is unknown. The total cost would be the sum of the amount paid for n scarves and 2 purses. The equation would then be,
                                     5n + (12)(2) = 39
Simplifying,
                                      5n + 24 = 39

Thus, the answer is letter B. 

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

The answer would be (8+7z)/5