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Answer:
13
Step-by-step explanation:
15 - 4 + 7 - 5 = 13
Simply expand the brackets and subtract and add accordingly.
(-5a)(-3a ²)
=
15a³
-5 x -3 = 15 ( negative times negative = positive)
a x a² = a³ ( when multiplying exponents, you add the exponents together )
<span>3.4 = –13.6 + (–3.4c) + 1.7c
</span><span>3.4 = –13.6 –3.4c + 1.7c
17 = -1.7c
c = -10</span>
Answer: Twelve fifth of an Hour
Step-by-step explanation: a whole is represented by 1
1/3=4/5hours
Whole room 1 =4/5 ÷ 1/3
=4/5×3/1
=4×3/5
=12/5
That's twelve fifth of an hour
