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Anestetic [448]
3 years ago
5

Explain why 3x^2+kx-1 is never always positive for any value of k

Mathematics
1 answer:
lianna [129]3 years ago
8 0
Hello : 
<span>(3x²+kx-1) is a quadratic polynome when : a =3  , b=k , c= -1
the discriminat  </span>Δ = b²-4ac ≥ 0 because ac = -3 <span><<span> 0
-4ac </span></span>>0  and b²<span>≥0
the </span> quadratic polynome has :2 solutios or 1 solution (Change of sign)
conclusion :   <span>is never always positive for any value of k</span>
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What is the value of h in the figure below? In this diagram, /\BAD ~ /\CBD.
dusya [7]

Answer:

12

Step-by-step explanation:

(25-16) / h = h / 16

9/h = h/16

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h₂ = 144

h= square root 144

h= 12

3 0
3 years ago
Help algebra word problems a quire of paper consists of 25 sheets, and a ream of paper consists of 500 sheets. how many quires a
Natali5045456 [20]
Good morning from Canada!

What we know:
-quire=25 sheets
-ream=100 sheets

So, we are looking for how many quires can fit into a ream. All we have to do is divide the number of sheets in a ream (100) by the number of sheets in a quire (25) because dividing allows us to see how many times a specific number can go into another number, which is what we are looking for. (How many quires are in a ream).

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Therefore 4 quires can fit into a ream.

Hope this helps!
3 0
3 years ago
I need help asap pls
meriva

Answer:

\displaystyle 36° = m∠NQS

Step-by-step explanation:

Apply the Midsegment Theorem:

\displaystyle \frac{1}{2}[96 - 4x]° = [5x + 6]° → [48 - 2x]° = [5x + 6]° → -42 = -7x; 6 = x \\ \\ [48 - 2(6)]° = [48 - 12]° = 36° \\ \\ AND/OR \\ \\ [5(6) + 6]° = [30 + 6]° = 36°

I am joyous to assist you at any time.

8 0
3 years ago
What is exponential rate of change
hammer [34]

Answer:

Exponential growth refers to an increase based on a constant multiplicative rate of change over equal increments of time,that is a percent increase of the original amount over time.

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3 years ago
What’s the surface area of 5 inches and 7 inches
erik [133]

Answer:

Is the surface a rectangle?? If so, then the surface area would be 35

Step-by-step explanation:

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Hope this helped!!  :)

5 0
3 years ago
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