gymnast8900

10.12.2021 • 

Mathematics

Task 2: A Boat Ride Jake went on a riverboat tour. After returning from the tour, he was curious to know the speed
at which the boat was going. During the tour, he was told that he would travel 10 miles
upstream and then 10 miles downstream. He also knows that the river was flowing at a rate
of 3 miles/hour and that the tour took about three hours.
The boat moved at a constant speed for the whole journey, although its actual speed varied
with the current.

Ответ:

darrenmcfadden220

30.12.2022

Mathematics

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Answer : The two correct options are,

3.4a + 5.6b

5.6b + 3.4a

Step-by-step explanation :

The given expression is:

(-2.4a - 1.8b) - (-3.8a - 4.4b) + (2.0a + 3.0b)

First we have to open the brackets.

⇒ -2.4a - 1.8b + 3.8a + 4.4b +2.0a + 3.0b

Now keep like terms together.

⇒ -2.4a + 3.8a +2.0a + 3.0b - 1.8b + 4.4b

By subtraction or addition, we get:

⇒ 3.4a + 5.6b

or,

⇒ 5.6b + 3.4a

Hence, the expressions that equivalent to the given expression are, 3.4a + 5.6b and 5.6b + 3.4a

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