1) which shows 5/90 in decimal form?
a 0.
b 0.
c 0.
d 0.
i had a bit of difficulty figuring out how to show that these were repeating, so if they look odd, that's why.
2) what is the value of n?
−0.52−0.015=n
a -0.670
b -0.535
c 0.370
d 0.505

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!