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Levart [38]
3 years ago
15

Which of the following expressions represents a function? {(1, 2), (4, −2), (8, 3), (9, −3)}

Mathematics
1 answer:
brilliants [131]3 years ago
4 0
Yes this expression does indeed represent a function.
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What is 2x+y=4 and 2x+y=-1
butalik [34]

Answer:

{x,y} = {5,6}

Step-by-step explanation:

// Solve equation [1] for the variable  x

 [1]    x = y - 1

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

  [2]    2•(y -1) - y = 4

  [2]    y = 6

// Solve equation [2] for the variable  y

  [2]    y = 6

// By now we know this much :

   x = y-1

   y = 6

// Use the  y  value to solve for  x

   x = (6)-1 = 5

5 0
3 years ago
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Ffffffffffffffffffff
scoundrel [369]

Answer:

1

16-7-(2×4)

16-7-(8)

16-7=9-8=1

5 0
2 years ago
What is the range of the function y = -x2 + 1?
meriva
<span><span>y = 2 + 2sec(2x) The upper part of the range will be when the secant has the smallest positive value up to infinity. The smallest positive value of the secant is 1 So the minimum of the upper part of the range of y = 2 + 2sec(2x) is 2 + 2(1) = 2 + 2 = 4 So the upper part of the range is [4, ) The lower part of the range will be from negative infinity up to when the secant has the largest negative value. The largest negative value of the secant is -1 So the maximum of the lower part of the range of y = 2 + 2sec(2x) is 2 + 2(-1) = 2 - 2 = 0 So the lower part of the range is (, 0]. Therefore the range is (, 0] U [4, ) </span>
</span>
3 0
3 years ago
What is the reference angle of 255°?​
Vinvika [58]

Answer:

255 degrees is in quadrant 3. The reference angle in this case is the negative x axis to 255 degrees, which is 255 - 180 = 75 degrees

Step-by-step explanation:

6 0
3 years ago
A pitcher holds 16 cups of lemonade. How many pints does it hold? 32 8 4 2
Serggg [28]

Answer:

8 pints because 16 cups is one gallon so 4 pints is one gallon

Step-by-step explanation:

6 0
3 years ago
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