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Lubov Fominskaja [6]
2 years ago
15

simplify the polynomial then finds its value for the given value of the variable 3x^3-x^3+5x^3-9x^3 if x=-1

Mathematics
1 answer:
melisa1 [442]2 years ago
5 0

Answer: 2

Step-by-step explanation:

3•(-1)^3 - (-1)^3 + 5•(-1)^3 - 9•(-1)^3

3•(-1) - (-1) + 5•(-1) - 9•(-1)

-3 +1 -5 +9= 2

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I don't know what to do I'm very confused ​
finlep [7]

Answer:

x = 33.8°

Step-by-step explanation:

The resulting diagram we have is a right triangle. To find x, apply trigonometric function.

Reference angle = x

Opposite = 116

Adjacent = 173

Apply TOA:

Tan x = Opp/Adj

tan (x) = \frac{116}{173}

x = tan^{-1}(\frac{116}{173})

x = tan^{-1}(\frac{116}{173})

x = 33.8° (nearest tenth)

7 0
2 years ago
Use the Pythagorean identity on page 10 with x = 4 and y= 3 to generate a Pythagorean triple​
Dmitry [639]

Answer:

  c.  7, 24, 25

Step-by-step explanation:

For the formulas ...

  • a=x^2-y^2
  • b=2xy
  • c=x^2+y^2

we can use the given values of x and y to find the corresponding Pythagorean triple:

  a = 4^2 -3^2 = 16 -9 = 7

  b = 2·4·3 = 24

  c = 4^2 +3^2 = 16 +9 = 25

The generated Pythagorean triple is (7, 24, 25), matching answer C.

6 0
2 years ago
The straight line y = mx +b passes through point C(−2, 3) and intersects the X-axis at point A, and the Y-axis at point B. Find
masya89 [10]
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7 0
3 years ago
the sum of two numbers is 49.Twice the smaller number is 97 less than 3 times the larger number.What are the numbers. help mee I
kondaur [170]

Answer:

smaller number is 10

larger number is 39

Step-by-step explanation:

a = small number

b = larger number

a + b = 49

2a = 3b - 97

substitute 49-a into second equation for b

2a = 3(49-a) - 97

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a = 10

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7 0
2 years ago
Which function describes the graph shown below?
stira [4]

Answer:

It's D

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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