Firs you would do 4b-15b and get -11b. Next you would do -7+3 and get -4. The final expression would be -11b-4
Answer:
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The circumference of the circle is about 25.12 inches. Hope it help!
Answer:
92.
Step-by-step explanation:
By proportion the mass of zinc = (345/ 15) * 4
= 92.