PrestonTB
22.10.2020 •
Mathematics
Simplify the expression.
10[4X10/(6^2 - 4^2)+1]
A. 20
B. 30
C. 210
D. 201
(the 6^2 is six to the power of two btw)
I will mark brainliest to the first answer
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Ответ:
-7/5
Step-by-step explanation:
-4(1/5)⋅(1/3)
Convert -4(1/5) to an improper fraction.
A mixed number is an addition of its whole and fractional parts.
− (4 +1/5) ⋅(1/3)
Add 4 and 1/5
-21/5 ⋅ 1/3
Cancel the common factor of 3.
Move the leading negative in − 21 /5 into the numerator.
−21/5 ⋅ 1/3
Factor 3 out of −21.
3 (−7)/5 ⋅ 3 /1
Cancel the common factor.
Rewrite the expression.
−7 /5