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balu736 [363]
3 years ago
9

If (a+b) = 4 and ab = 3, find the value of a³+b³.​

Mathematics
1 answer:
Stolb23 [73]3 years ago
8 0

Answer:

28

Step-by-step explanation:

a³+b³= (a+b)³ - 3ab(a+b)

= 4³ -3×3×4 = 64-36 = 28

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Someone, please help me fill this out
nadezda [96]

Answer:

Here is the summary:

  • y = 13x+5 satisfies the points (0, 5) and (-2, -21)
  • y = -3x satisfies the points (0, 0), (-5, -15) and (-3, 9)
  • y = x-10 satisfies the points (8, -2)

Step-by-step explanation:

Given the equation

  • y = 13x+5
  • y = -3x
  • y = x-10

The points which satisfy the equation y=13x+5

y = 13x+5

Checking the point (0, 5)

5 = 13(0)+5

5 = 0 + 5

5 = 5

TRUE

Checking the point (-2, -21)

-21 = 13(-2)+5

-21 = -26 + 5

-21 = -21

TRUE

The points which satisfy the equation y=-3x

y = -3x

Checking the point (0, 0)

0 = -3(0)

0 = 0

TRUE

Checking the point (-5, -15)

y = -3x

-15 = -3(-5)

-15 = -15

TRUE

Checking the point (-3, 9)

y = -3x

9 = -3(-3)

9 = 9

TRUE

The points which satisfy the equation y=x-10

y = x-10

Checking (8, -2)

-2 = 8 - 10

-2 = -2

TRUE

Therefore, from the above calculations we conclude the summary:

Here is the summary:

  • y = 13x+5 satisfies the points (0, 5) and (-2, -21)
  • y = -3x satisfies the points (0, 0), (-5, -15) and (-3, 9)
  • y = x-10 satisfies the points (8, -2)
7 0
3 years ago
Please help me find the value of x​
-Dominant- [34]

Answer:

67°

Step-by-step explanation:

Corresponding angles are equal in parallel lines.

Here, ∠acb and ∠aed are corresponding angles for lines bc and de

hence ∠aed = ∠acb = 39

in triangle ade,

x + 74 + 39 = 180 (angle sum property of a triangle)

x = 67°

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Answer: Answer is B hope this helps

Step-by-step explanation:

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