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Firdavs [7]
3 years ago
7

Find the discriminant and the number of real roots for this equation.

Mathematics
1 answer:
GuDViN [60]3 years ago
8 0

Answer:

D

Step-by-step explanation:

To find the discriminant you do b^2-4(a)(c), which in this case gives you -28. If your discriminant is less than zero, you will have no real roots.

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NEED HELP ASAP!!!
Sergeeva-Olga [200]

Answer:

(b) P(\textrm{Event of getting a 3 in the spinner)}  =  \frac{11}{61}

Step-by-step explanation:

Let E: Event of getting a 3 in the spinner.

So, the number of favorable outcomes  =  11

Total number of outcomes = Number of times the outcomes is {1,2,3,4,5,6}

= {13 +10 +11+16+11}  = { 61}

So, the total number of outcomes = 61

\textrm{Probability of Event E}  = \frac{\textrm{Number of favorable events}}{\textrm{Total number of outcomes}}

So, here P(\textrm{Event of getting a 3 in the spinner)}  =  \frac{11}{61}

3 0
3 years ago
Please help I have 15 minutes!!!!!
OlgaM077 [116]
It is a function because each x value only has one y value
6 0
3 years ago
Read 2 more answers
(I NEED THIS ANSWERED QUICKLY! I WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!)
dezoksy [38]

Answer:

D

Step-by-step explanation:

literlay just count

3 0
3 years ago
Perform the indicated operation. (-18)/-(4)
Illusion [34]
A negative divided by a negative is always a positive. 4 can go into 18 only 4 times to get 16 with a remainder of 2. 2 is half of four, therefore -4 can go into -18 4.5 times. 
The answer is 4 1/2 or 4.5.
I hope this helps ^-^
7 0
3 years ago
What is the value of ▲ in the equation shown?<br> 7x9=(7x10)-(7x▲ )
ahrayia [7]

Step-by-step explanation:

▲ =1

easy peasy........

7 0
3 years ago
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