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uranmaximum [27]
3 years ago
14

X and Y are continuous values, both measured to 2 significant figures. X=230 and Y=400. work out the greatest possible value of

X/Y^2.
(this is on an upper and lower bounds sheet)
Mathematics
1 answer:
kirill115 [55]3 years ago
8 0
"Two significant figures" means that a digit after the second one could actually be anything ... it wasn't measured. 'X' could be anything from 230 to 239. 'Y' could be anything from 400 to 409. The greatest possible value of that fraction is. (239)/(409 squared) .
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Aleksandr [31]
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2 years ago
Kayaks rent for $35 per day. Which expression can you use to find the cost in dollars of renting 3 kayaks for a day?
Murrr4er [49]

Answer:

$105

Step-by-step explanation:

assuming that it costs $35 dollars for renting 1 kayak per day:

3 * 35 = k   3 is for the # of kayaks and 35 is the cost

105 = k    multiply 35 w/ 3 to get the answer

6 0
3 years ago
Given that a:b:c= 20 : 35 : 15, a) simplify a : b:c, b) find a:b,
Furkat [3]

Answer:

a) 4:7:3

b) 4:7 / 20:35

c) 3:7 / 15:35

4 0
2 years ago
Solve the system using substitution:<br> y = -6x + 7<br><br> 3x – 2y = 16<br><br> helppp
bearhunter [10]

Answer:

x=-6 y=-1

Step-by-step explanation:

// Solve equation [2] for the variable  y  

 

 [2]    y = -x - 7

// Plug this in for variable  y  in equation [1]

  [1]    3x - 2•(-x -7) = -16

  [1]    5x = -30

// Solve equation [1] for the variable  x  

  [1]    5x = - 30  

  [1]    x = - 6  

// By now we know this much :

   x = -6

   y = -x-7

// Use the  x  value to solve for  y  

   y = -(-6)-7 = -1  

Solution :

{x,y} = {-6,-1}

7 0
3 years ago
Read 2 more answers
Please help me, i dont get it :(
Leya [2.2K]

Answer: B, D, and E

Step-by-step explanation: 20% of 45 equals 9 D, D, and E all equal 9

3 0
3 years ago
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