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Gwar [14]
4 years ago
5

Add the two expressions. −2.4n−3 and −7.8n+2 Enter your answer in the box.

Mathematics
2 answers:
Vaselesa [24]4 years ago
8 0

Answer:

-10.2n - 1

Step-by-step explanation:

−2.4n − 3 + (−7.8n + 2) =

= -2.4n - 7.8n - 3 + 2

= -10.2n - 1

erik [133]4 years ago
4 0

Answer:

-10.2n -1

Step-by-step explanation:

−2.4n−3 + −7.8n+2

Combine like terms

−2.4n −7.8n -3+2

-10.2n -1

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4 years ago
The density of water is 1000 kilograms per cubic meter and the density of ice is about 916 kilograms per cubic meter of 700 kilo
Assoli18 [71]
We know that
density=mass/volume--------> volume=mass/density

step 1
find the volume of water
mass=700 kg
density of water=1000 kg/m³
volume of water=mass/density-----> 700/1000----> 0.70 m³

step 2
find the volume of ice
mass=450 kg
density of ice=916 kg/m³
volume of ice=mass/density-----> 450/916----> 0.49 m³

volume of water is 0.70³
volume of ice is 0.49 m³
<span>volume of the mixture is (0.70+0.49)-----> 1.19 m</span>³

the answer is
the volume of water is  0.70 m³

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