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ZanzabumX [31]
3 years ago
11

How to solve this problem?

Mathematics
1 answer:
OverLord2011 [107]3 years ago
6 0
What happens when a quadratic function touches the x-axis only once?  It means that the quadratic function has only one real zero.  So which formula should we use? How about the almighty quadratic formula?

So when does the quadratic formula give you only one real zero? When the discriminant is equal to zero!

The discriminant is: b²-4ac

In our quadratic equation that means:
b = (3+m)
a = 4
c = 1

Thus, we need to solve: (3+m)²- 4*(4)*(1) = 0

m²+ 6m + 9 - 16 = 0
m² + 6m - 7 = 0
(m+7)(m-1) = 0
m = -7, 1

That's it! Plug back in and graph to see that it actually works!
You might be interested in
What is the volume of a cube 1 1/2 inches wide 2 1/2 inches long and 4 inches high?
mel-nik [20]

Answer:

231

Step-by-step explanation:

first of all it must be a cuboid bcoz a cube's edge is same i.e length =breadth= height.

now volume of cuboid =lbh

11/2×21/2×4

=231

ans....

6 0
2 years ago
Read 2 more answers
Can you please help me​
Sonja [21]

Answer:

its (420) because (listed below)

Step-by-step explanation:

The traingular is pointing down left and 420 and the angle towards down left. Your welcome!

<h2>HAVE A BLESSED DAY AND STAY SAFE (:</h2>
3 0
2 years ago
I need help please?!!!
yanalaym [24]
Answer is: C


√11 ≈ 3.3661
Which the closest to your answers is 3.3
5 0
2 years ago
Find 3rd and 5th form by using nth term formula tn=a+(n-1)d when tn=a+(n-1)d when a=2 and d=3.​
lawyer [7]

Answer:

t3 = 8, t5 = 14

Step-by-step explanation:

t3 = 2 + (3-1) × 3

t3 = 2 + (2) × 3

t3 = 2 + 6

t3 = 8

t5 = 2 + (5-1) × 3

t5 = 2 + (4) × 3

t5 = 2 + 12

t5 = 14

8 0
3 years ago
14 is 10% of ____?<br> Or what is 14 10% of
leonid [27]

Answer:

THE ANSWER TO THE TOP LINE IS: 140

Step-by-step explanation:

why? becuase 10 times 10 is 100 all whole fractions need to be ?/100 (something over 100) so then becuase you did 10 times ten to find what 14 is you do 14 times 10. it should look like this :D.

10*10=100

14*10=140 .         140/100 is your answer or 140 :)

3 0
1 year ago
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