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2 years ago

What is the simplest form of the expression (14.2a + 9.8b) – (13.1b – 0.2a) – (3.7a + 4.8b)?

Mathematics

2 answers:

makvit [3.9K]2 years ago

5 0

The first; 10.7a-8.1b

frosja888 [35]2 years ago

4 0

Answer:

$10.7a - 8.1b$

Step-by-step explanation:

the simplest form of the expression (14.2a + 9.8b) - (13.1b - 0.2a) - (3.7a + 4.8b)

$(14.2a + 9.8b) - (13.1b - 0.2a)- (3.7a + 4.8b)$

To subtract the expressions we multiply negative sign inside the second parenthesis, change the sign of each term in second and third parenthesis

$14.2a + 9.8b - 13.1b + 0.2a-3.7a-4.8b$

Now we combine like terms

$14.2a +0.2a-3.7a = 10.7a$

$9.8b - 13.1b-4.8b=-8.1b$

So the expression becomes

$10.7a - 8.1b$

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A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed, t

maksim [4K]

Answer:

Boat traveled 553.24 feet towards the lighthouse.

Step-by-step explanation:

In the figure attached AB is the light house of height 200 feet.

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Ganezh [65]

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