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bija089 [108]
3 years ago
11

A number decreased by 4 is greater than 13 solve pls

Mathematics
1 answer:
eimsori [14]3 years ago
4 0

Answer:  

Year 10 Interactive Maths - Second Edition

Problem Solving

Linear equations are often used to solve practical problems that have an unknown quantity. We use a suitable pronumeral to represent the unknown quantity, translate the information given in the problem into an equation, and then solve the equation using the skills acquired earlier in this chapter.

Example 11

If a number is increased by 8, the result is 25. Find the number.

Solution:

Let x be the number.  Increasing x by 8 gives x + 8, which we are told is 25.  Therefore, x + 8 = 25.  Subtract 8 from both sides to find x = 17.  So, the number is 17.

Step-by-step explanation:

I hope this helps!!!

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Jose earned 5h + 5 dollars for h hours and Alex earned 8h – 10 for h hours mowing lawns. If they earned the same amount
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Answer:

5 hours

Step-by-step explanation:

This is a classic pre-algebra question.

5h+5=8h-10\\5=3h-10\\15=3h\\h=5

3 0
3 years ago
Please help I'm so close to being done and I don't know how to do this!!! Pls give answer but show how to do it!!!
cestrela7 [59]

Answer:

  • 8y + 16

Step-by-step explanation:

The shaded area is the difference of the large and small squares.

<u>Area of large square:</u>

  • A(l) =  (y + 4)²

<u>Area of small square:</u>

  • A(s) = y²

<u>Shaded area:</u>

  • A = A(l) - A(s)
  • A = (y + 4)² - y² = y² + 8y + 16 - y² = 8y + 16

4 0
2 years ago
4. Solve -3 = -2x + 1 by graphing.<br> Helpppppp
QveST [7]

Answer:

x=2

Step-by-step explanation:

-3         =  -2x  +1

+3 +2x =  +2x +3

2x=4

divide them both by 2

x=2

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Use the graph below to determine which year was the fourth best year for unit sales
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Step-by-step explanation:

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