1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tamiku [17]
3 years ago
14

Use the discriminant to find all values of b for which the question has one real solution.

Mathematics
1 answer:
Arada [10]3 years ago
4 0
Use the formula 0 = b^2-4ac

0 = -b^2-4(2)(-9)

0 = -b^2+72

b^2 = 72

b = square root of 72

b = 2 real numbers
You might be interested in
Disregarding wind resistance the distance a body falls from rest varies directly as th squares of the time it falls if a skydive
Firdavs [7]

Answer:

The skydiver will fall 1600 ft in 10 seconds.

Step-by-step explanation:

<u>Distance a body falls from rest varies directly as the squares of the time it falls </u>

Let distance = s    

      time = t

Therefore , s = k \times t^{2}

Given, the body falls 64 ft in 2 seconds.

Substituting in above equation,

64 = k \times (2)^{2}

64 = k \times (4)

 k  = \frac{64}{4}

 k = 16 ft/s^{2}

We have to find how much he will fall in 10 seconds.

s = k \times t^{2}

s = 16 \times 10^{2}

s = 16 \times 100

s = 1600 ft

3 0
3 years ago
I think the answer is A <br><br><br> Correct?
xeze [42]

You can see that there are 6 rock CDs, over a total of

6+10+4+8+12 = 40

So, the ratio of rock CDs over the total number of CDs is

\dfrac{6}{40} = 0.15

Which is 15%.

So, yes, the answer is A

4 0
2 years ago
Read 2 more answers
Simplify the following expression 5(m+1)-1
nevsk [136]

5(m + 1) - 1 \\ 5m + 5 - 1 \\ 5m + 4

4 0
2 years ago
Read 2 more answers
Please Help.........................
Alex73 [517]
C) algae live only in the epipelagic zone bc it is the only zone with enough light for photosynthesis
5 0
2 years ago
A twelve inch candle and an 18 inch candle are lit at 6 pm. The 12-in. candle burns 0.5 inches every hour. The 18 inch candle bu
Greeley [361]
 <span>18 - 2t = 12 - 0.5t 
6 = 1.5t 
t = 6/1.5 
t = 4 hours 
time required to have the same height = 4hours 
At what time ? 
answer : at 10pm 
------------------- 
12inch candle lasts longer ..</span>
3 0
3 years ago
Other questions:
  • A particular psychological test is used to measure need for achievement. The average test score for all university students in O
    13·1 answer
  • Q#4:
    15·1 answer
  • .. What type of number is the following?
    15·2 answers
  • Find the area of the blue shaded region. Round your answer to the nearest hundredth
    12·1 answer
  • You are given a cubic box with an edge length of 20in, what is the volume of the box?
    13·1 answer
  • Match the missing angle measurement to the diagram.<br> 136°<br> 33°<br> 57°<br> 80°
    13·1 answer
  • Solve the following questions if |7|x|-4=a then find the value of a​
    11·1 answer
  • HELP I need this for a quiz the screenshot is there
    13·1 answer
  • In triangle ABC, what is the value of x?
    7·2 answers
  • 7 (2.268- 2.036) ? answer I need help
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!