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kolbaska11 [484]
3 years ago
7

To estimate 103% of 63, Rich rounded 103% down to 100%, 63 down to 60, and multiplied 60 by 1 to get 60. Which of these statemen

ts is correct?
Rich’s estimate is reasonable because it should be less than 63.
Rich’s estimate is unreasonable because it should be exactly 63.
Rich’s estimate is unreasonable because it should be less than 63.
Rich’s estimate is reasonable because it should be greater than 63.
Mathematics
1 answer:
MrRissso [65]3 years ago
8 0

Answer:

D.     Rich’s estimate is reasonable because it should be greater than 63.

Step-by-step explanation:

Because 103% of 63 is 64.89 which means it would be greater than 63.

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Substitute this equation x+3y=18 & -x-4y=-25
sveticcg [70]

Answer:

 {x,y} = {3/7,-43/7}

Step-by-step explanation:

System of Linear Equations entered :

  [1]    x + 3y = -18

  [2]    -x + 4y = -25

Graphic Representation of the Equations :

   3y + x = -18        4y - x = -25  

 

 

Solve by Substitution :

// Solve equation [1] for the variable  x  

 

 [1]    x = -3y - 18

// Plug this in for variable  x  in equation [2]

  [2]    -(-3y-18) + 4y = -25

  [2]    7y = -43

// Solve equation [2] for the variable  y  

  [2]    7y = - 43  

  [2]    y = - 43/7  

// By now we know this much :

   x = -3y-18

   y = -43/7

// Use the  y  value to solve for  x  

   x = -3(-43/7)-18 = 3/7  

Solution :

{x,y} = {3/7,-43/7}

5 0
3 years ago
If the ratio of milk cartons to juice boxes is 13:x and there are 39 milk cartons
max2010maxim [7]
The answer is 6 because 39/13=3 and 18/3=6
8 0
3 years ago
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Illusion [34]

Answer:

42

Step-by-step explanation:

11 - 4 = 7

49 - 7 = 42

3 0
3 years ago
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7*z^(1/2)-3=2*z??? solve??/
Hoochie [10]

Answer:

Z €{9, i can right a fraction but on top is 9 below is 4}

Step-by-step explanation:

3 0
3 years ago
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gulaghasi [49]

Answer:

72°

Step-by-step explanation:

Given

Zy = 108°

Zx = ?

We know

Zx + Zy = 180° {being supplementary angles }

Zx + 108° = 180°

Zx = 180° - 108°

Zx = 72°

Hope it will help :)

4 0
3 years ago
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