Which answer correctly estimates the product of 3.09 × 304.87? A. about 9.0 B. about 9.9 C. about 90 D. about 900
2 answers:
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Answer:
B
Step-by-step explanation:
Rocco: of the job per hour
Giulia: of the job per hour
Together: of the job per hour
Rocco + Giulia = Together
3x + 21 = 7x
21 = 4x
It will take Giuliahours to paint the room by herself.
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Giulia:
B)
1=1
so it's true
