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Debora [2.8K]
3 years ago
8

How many real number solutions does the quadratic below have? y=2x^2-10x+6

Mathematics
2 answers:
Alexxx [7]3 years ago
7 0

Answer:

2 real number solutions.

Step-by-step explanation:

You check the value of the discriminant b^2 - 4ac.

Here it = (-10)^2 - 4*2* 6)

= 100 - 48

= 52. (Positive)

This means that it has 2 real number solutions.

If the discriminant = 0 it has one real number solution and if negative it has no real number solutions.

hodyreva [135]3 years ago
7 0

Answer:

i think its 2 real number

Step-by-step explanation:

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Sandra swims the 100-meter freestyle for her school’s swim team. Her state’s ranking system awards 3 points for first place, 2 p
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Answer:

2.25

Step-by-step explanation:

The total frequency is:

20 + 12 + 6 + 2 = 40

Calculate the probability of each score:

P(X=3) = 20/40 = 0.50

P(X=2) = 12/40 = 0.30

P(X=1) = 6/40 = 0.15

P(X=0) = 2/40 = 0.05

So the expected value is:

E = (3)(0.50) + (2)(0.30) + (1)(0.15) + (0)(0.05)

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5 0
3 years ago
39.54 divided by 3 please.
jeka57 [31]

Answer: 13.18

Step-by-step explanation:

5 0
3 years ago
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What is the volume of a rectangular prism that is 3 cm by 7 cm by by 7 cm?
natali 33 [55]

Answer:

147 cm^{3}

Step-by-step explanation:

7*7*3 = 147

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hope this helps :)

3 0
3 years ago
The vertical of three squares are joined to form a right triangle , what is the area of the largest square
lakkis [162]

Answer:

43cm²

Step-by-step explanation:

let's first consider the area of a square.

the area is L² which means all sides are equal so we take the length times the breadth which is both equal because like we said all sides are equal.

so to find the side of the square using the area, we take the square root of both of the area.

\sqrt{25}  = 5

and also

\sqrt{18}  = 4.2

so we have the height of the triangle as 5cm and the base is 4.2cm.

now, from the triangle, since we have two sides and it's a right-angled, we can use Pythagoras' formula.

\sqrt{ {5}^{2}  +  {4.2}^{2} }  = 6.53cm

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Area = L²

Area = 6.53²

Area = 42.6cm

the nearest cm square

Area = 43cm²

8 0
2 years ago
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(69 points!) Some1 please solve. (69 points!)
MAVERICK [17]

Answer:

for the second questio it is certainly The last choice D

Step-by-step explanation:

5 0
3 years ago
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