PLS I NEED HELP ASAP I NEEDA SHOW FULL WORK TOO

Yes, it is a right triangle.

Step-by-step explanation:

slope of AB -> (5 - 3) / (0 + 6) = 2/6 -> 1/3

slope of BC -> (-1 - 5) / (2 - 0) = -6/2 -> -3

This already proves that it has a 90 degree angle at angle B because the slopes are inverse and reciprocal.  A slope of 1/3 and a slope of -3 (inverse slopes) means that the lines are perpendicular to one another and form a 90 degree angle

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!