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4 years ago

Solve the following quadratic equation using 3 out of 4 of the following methods

1 answer:

3 0

This type of question is very rare on Brainly. It's always a special
occasion when one comes along. I call this a "twofer".

Wherever this question was copied from, it clearly had both a
quadratic equation and a list of (4) methods along with it. Sadly,
the individual who expects to be handed a fully-developed set of
answers on a silver platter chose to share neither of them with the
volunteers whose assistance he so earnestly solicits.

One might just as well come along and post:

<em>"Answer the following question, using the following words." </em>

and then leave it at that, for others to puzzle over.

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3 years ago

A certain drug dosage calls for 25 mg per kg per day and is divided into two doses (1 every 12 hours). if a person weighs 80 pou

serg [7]

Kg = 2.20462 lb
kg(2.20462) = 80 lb
36.2874 kg = 80 lbs
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4 0

4 years ago

To determine the ________ of an event, you can use the formula P(E) = n(E)/n(S), where n(E) is the number of outcomes in the eve

Semenov [28]

Answer:

Probability

Step-by-step explanation:

Probability of an event is how likely that event is to happen. And it is denoted by letter P and calculated by the formula below:

P(E) = number of possible outcome/number of the total event sample

P(E) = n(E) / n(S)

3 0

3 years ago

Consider this quadratic equation.

enot [183]

Answer:

1 positive solution (and 1 negative)

the greatest solution is about 2.87

Step-by-step explanation:

so, it is

x² + 2x + 7 = 21

x² + 2x - 14 = 0

the general solution to such a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = 2

c = -14

x = (-2 ± sqrt(2² - 4×1×-14))/(2×1) =

= (-2 ± sqrt(4 + 56))/2 = (-2 ± sqrt(60))/2 =

= (-2 ± sqrt(4×15))/2 = (-2 ± 2×sqrt(15))/2 =

= -1 ± sqrt(15)

x1 = -1 + sqrt(15) = 2.872983346... ≈ 2.87

x2 = -1 - sqrt(15) = -4.872983346...

3 0

2 years ago

The function shown is reflected across the y-axis to create a new function. Which is true about the domain and range of each fun

snow_lady [41]

Answer:

The range will remain the same, and the sign of the domain(positive/negative) will switch.

Explanation:

(-x,y)

6 0

3 years ago