Question 3

Mathematics

1 answer:

crimeas [40]2 years ago

8 0

Answer:

D = 141

Step-by-step explanation:

The given quadratic equation is

$5x^2+9x=3\\\\5x^2+9x-3=0$ .

It is required to find the value of the discriminant. The value of discriminant of any quadratic equation is given by :

$D=b^2-4ac$

Here, a = 5, b = 9 and c = -3

On plugging all the values, we get :

$D=(9)^2-4\times 5\times (-3)\\\\D=141$

So, the value of discriminant for y is 141.

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20 POINTS

SIZIF [17.4K]

Let get all the information.
Mean:394
Deviation:35
Looking for At Least 380 feet
To find the z score you take the wanted probality subtract the mean and divide by the deviation.
z=(380-394)/35.
z=-0.4
So far so good.
But when he looked at the table he looked at probability that the home runs are less then 380 feet.
From this table
http://www.stat.ufl.edu/~athienit/Tables/Ztable.pdf
To find the answer you have to take 1-(the probability that the home runs are less than 380 feet)or 1-0.3446=0.6554
He made an error in his calculation.

8 0

3 years ago

Read 2 more answers

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topjm [15]

The answer would be 17

6 0

3 years ago

Mulder and Scully are driving to the same town. Mulder leaves the office at 9:30a.m. averaging 57mph. Scully leaves at 10:00a

koban [17]

Answer:

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