Step-by-step explanation:
Let the number of psychology books be 'x'.
and that of sociology books be 'y'.
x + y = 317 (given)
Number of sociology books sold was 89 less than that of psychology books.
y = x - 89
Which means,
x + x - 89 = 317
2x = 317 + 89
2x = 406
x = 406/2 = 203
y = 203 - 89 = 114
Hence, 203 psychology books and 114 sociology books were sold.
Answer:
D. Maya is incorrect because she listed the runners from least improved to most improved. Runners that decreased times are improving, and those that add time are not improving.
Step-by-step explanation:
I got it right on edge
Answer:
B. They are similar, but not congruent.
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
21+-23= -2
so the answer is "21"
Answer:
simplified
Step-by-step explanation:
look this is mad easy the answer is simplified because since there is no equal sign you dont need to find the value of y.