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Naddika [18.5K]
3 years ago
11

Find the discriminant of the equation and give the number and type of solutions of the equation 4x^2+2x-5=0

Mathematics
1 answer:
nlexa [21]3 years ago
4 0

Answer:

The answer is 84.

Step-by-step explanation:

The given equation is

4x*2 + 2x -5 = 0

Here a= 4, b= 2, c= -5

Since Discriminant= b*2 -4ac

Putting values

Discriminant= (2)*2 - 4(4)(-5)

= 4 + 80

= 84

Since our Discriminant(84) is >0 and is not a perfect square so the roots of the given equation are unequal and irrational(real).

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I need help with this now
il63 [147K]

Answer:

80

hope this is correct

comment below

hope this helps you ☺️☺️

5 0
3 years ago
Please help me 10 points
Oksana_A [137]
7\dfrac{2}{9}-3\dfrac{5}{6}=7\dfrac{2\cdot2}{9\cdot2}-3\dfrac{5\cdot3}{6\cdot3}=7\dfrac{4}{18}-3\dfrac{15}{18}\\\\=6\dfrac{22}{18}-3\dfrac{15}{18}=3\dfrac{7}{18}
7 0
3 years ago
At the local pet store, zebra fish cost $1.80 each and neon tetras cost $2.10 each. If Ernesto bought 16 fish for a total cost o
madreJ [45]
<span>zebra fish a then tetras fish (11 – a)
2.2a + 1.85(11 – a) = 22.80
2.2a + 20.35 – 1.85a = 22.80
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a = 7 zebra and 11 – 7 = 4 neon fish

</span>
3 0
3 years ago
3n to the 2nd power+2
steposvetlana [31]

Answer:

11n

Step-by-step explanation:

We don't know the value of N, so we leave that the same.

3 to the second power, (3x3)= 9.

We have to add 2 to 9, so 9+2=11

Add your n to the end, and your answer is 11n.

3 0
3 years ago
A clothing store offers a free T- shirt when a customer spends $75 or more. Lyndon has already spent $36.95 which statement best
Anna [14]
$38.05 or more because you need a minimum of $38.10
8 0
3 years ago
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