D. 32/47
You would subtract 1580 from 640 to get 940. You would then simplify 640/940 to get 32/47.
-4 x 9 - (-10)
= - 45 + 10
= - (45 - 10)
= - 35
Rule: Negative times positive is negative; Negative times negative is positive
Answer:
the blue model
20 birds in all
Step-by-step explanation:
