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Alik [6]
3 years ago
13

Please help. I need to know the strategy, the correct work, and to identify the error.

Mathematics
1 answer:
zysi [14]3 years ago
7 0

Answer:

See below

Step-by-step explanation:

13x + 5 + 17x - 4.5 + x

NOTE: You can only add/subtract LIKE terms . Here we have  variable terms in x  (13x , 17x and x) and 2 constants ( 5 and 4.5).

Sarah's next line is

18x + 17x - 4.5 + x

This is incorrect . It looks like she  added 13x + 5 and got 18x!! Which is of course wrong because they are NOT LIKE terms. 5 is a constant and 13x is a variable term in x.

The third line is correct:-

35x - 4.5 + x.

She has added the 2 variables 17x and 18x.

Fourth line  is  30.5x + x. She's at it again - Trying to subtract 4.5 from 35x .

Last line 31.5x

She has added  the 2 terms in x correctly, but the final answer is wrong of course due to the earlier errors.


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Because on a graph (2,3) means that the point is two along and three up while (3,2) means it is 3 along and two up.

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4 2/3 miles in 3/4 hour <br> 4/23 divided by 3/4 ? <br><br> NEED FAST ANSWERS !
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Answer:

= 12 miles per hour

Step-by-step explanation:

This is a fraction equal to

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We want a unit rate where

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5 0
3 years ago
Find the area of a compound shape<br><br> The answer is 357 m^2<br><br> I just need the steps.....
Veseljchak [2.6K]

9514 1404 393

Answer:

  • figure the areas of the rectangle and semicircle
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Step-by-step explanation:

The area of the rectangle is given by ...

  A = LW

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The area of the semicircle is ...

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__

Then the total area is ...

  280 m² +77 m² = 357 m²

_____

The width of the rectangle is the diameter of the circle, which is twice its radius. The area of a semicircle is 1/2 the area of a circle.

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2 years ago
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