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liberstina [14]
2 years ago
8

Find range of function y=1/2x+3 when domain =-2,0,2,4

Mathematics
1 answer:
eduard2 years ago
8 0
The Answer Is Negative 6
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Lusa has 85 coupons she can trade in 10 of them for a toy how many toys can Lusa get for her coupons how many coupons will she h
dimaraw [331]

Answer:8.5


Step-by-step explanation: you divide 85 by ten and you will get your answer


4 0
2 years ago
What is the radius of a circle with an area of 9671.99 cm²? Use 3.14 for pi.
Tcecarenko [31]

Answer:

55.5000143456...

Step-by-step explanation:

Use the formula for the area of a circle and solve for r:

A=\pi r^2\\9671.99=3.14r^2\\3080.25159236...=r^2\\55.5000143456...=r

6 0
2 years ago
Y = f(x) has the derivative f'(x) = (x + 1)²(x + 3)(x² + 2mx + 5) with ∀x∈i.
maksim [4K]

9514 1404 393

Answer:

  m ≥ -√5

Step-by-step explanation:

If g(x) = f(|x|) for x∈i, then g(x) = f(x) for x∈ℝ: x ≥ 0.

f'(x) is 5th-degree, so f(x) is 6th-degree, meaning it is generally U-shaped. Since we're only concerned with x ≥ 0, we want to make sure f'(x) has no real zeros of odd multiplicity such that x > 0. The given factors of f'(x) make it have real zeros at x = -3 and x = -1.

For the last factor, (x² +2mx +5) to have no positive real zeros of odd multiplicity, we must have m ≥ 0 or the discriminant ≤ 0. The discriminant is ...

  d = b² -4ac = (2m)² -4(1)(5) = 4m² -20 . . . . . discriminant of the last factor

  d ≤ 0 . . . . . . . . . . the condition for no real zeros

  4m² -20 ≤ 0

  m² -5 ≤ 0 . . . . . . divide by 4

  m² ≤ 5 . . . . . . . . .add 5

  |m| ≤ √5 . . . . . . . take the square root

This tells us there will be a positive real zero of multiplicity 2 in f'(x) when m = -√5, and there will be no positive real zeros for -√5 < m < 0

There will be no odd-multiplicity positive real zeros in the derivative function f'(x) as long as m ≥ -√5. This means the slope of f(x) is non-negative for x ≥ 0, hence f(|x|) has its only minimum at x=0.

_____

<em>Additional comment</em>

The multiplicity of the zeros of f'(x) is important because the derivative will only change sign where the multiplicity is odd. When the discriminant of (x²+2mx+5) is zero, the associated positive real zero will have multiplicity 2, hence f'(x) will not change sign there.

3 0
2 years ago
PLEASE ANSWERRRRRRRRRRRRRR
Gelneren [198K]

Answer:

A. y = \frac{1}{2}x + 10

Step-by-step explanation:

Given;

  • The equation y = -7x - 5
  • and another equation have a solution of (-2, 9)

If we equate the value of y in the first equation and the value of y in the second equation, then the solution of x should be -2 . Let's test this with equation A:

-7x - 5 = \frac{1}{2}x + 10

-7x - \frac{1}{2}x = 10 + 5

-\frac{15}{2}x = 15

x = (15 × -2) ÷ 15 = -2

*<em>This proves that equation A has the same value of x as our first equation!</em>

<em />

Let's test if equation A has a solution; y = 9:

y = \frac{1}{2}(-2) + 10 = 9

*<em>This proves that equation A has the same value of y as our first equation!</em>

<em />

So the second equation is,

A. y = \frac{1}{2}x + 10

<em />

5 0
3 years ago
Find the measure of angle x in the figure below: (1 point)
RideAnS [48]

Answer:

30°

Step-by-step explanation:

Solve the blank angle for the bottom triangle. The sum of all the angles of a triangle is equal to 180. 75° + 75° = 150°. 180° - 150° = 30°. The missing angle of the bottom triangle is 30°. Angle x is equal to the blank angle of the bottom triangle. Therefore, x = 30°.

I hope this helped and please mark me as brainliest!

5 0
2 years ago
Read 2 more answers
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