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ekids22
15.04.2021 •
Mathematics
Combine like terms to complete the equivalent expression. 2 1/2 z² + 4 1/2 + 7z - 4 +5z - 1/2 z² = ( _ z² - _z²) + ( 7z + _ z) + ( _ - _) = _z²+ _ z +_
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Ответ:
Step-by-step explanation:
z is 1 and 2 is 2
Ответ:
b) The amount of energy that would be needed to lift a chair that weighs 2kg to a height of 40 cm would be 8 joules.