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FromTheMoon [43]
3 years ago
10

Mary is caring for 25 animals while her neighbors are on vacation. The number of cows is 3 greater than the number of pigs. How

many pigs is she taking care of?
Mathematics
1 answer:
VashaNatasha [74]3 years ago
3 0
To solve, you make a systems of equation:
x+(x+3)=25, the x representing the number of pigs. Since there is no multiplication and following the order of operations, you add the x’s to get 2x+3=25. Then, you subtract 3 from both sides to get 2x=22, then divide by 2 on both sides to isolate the variable. Therefore, x=11 and Mary is taking care of 11 pigs.
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A party rental company has chairs and tables for rent. The total cost to rent 4 chairs and 8 tables is $89 . The total cost to r
puteri [66]
Let C = cost to rent each chairLet T = cost to rent each table

 4C + 8T = 73
2C + 3T = 28 
Multiply the 2nd equation by (-2) and then add the equations together 

  4C + 8T = 73
-4C - 6T = -56
 2T = 17T = 17/2 = 8.5

 Plug this in to the 1st equation to solve for C
 4C + 8(17/2) = 73
4C + 68 = 73
4C = 5C = 5/4 = 1.25
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7 0
3 years ago
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On a number line, what number is 2/3 of the way from 7 to 13?
notka56 [123]

Answer:

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8 0
3 years ago
-x²-8x-16=0 <br>what is the solutions by solving by quadratic equations ​
Alika [10]

Answer:

x = - 4

Step-by-step explanation:

Given

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6 0
3 years ago
What is the area of a right triangle with a base of 25 centimeters and a height of 13 centimeters?
sdas [7]

Answer:

<h3>162.5 cm²</h3><h3>Step-by-step explanation:</h3>

Area of a triangle = (BH)/2

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6 0
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Artist 52 [7]
The quantity 5 more than a number t is labeled as (5+t) 
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45+9t < 6 
3 0
3 years ago
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