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Degger [83]
3 years ago
13

What are the values of a, b, and c in the quadratic equation –2x2 + 4x – 3 = 0?

Mathematics
2 answers:
IgorC [24]3 years ago
4 0

Answer:

The value of a, b and c are -2, 4 and -3 respectively.

Step-by-step explanation:

The given quadratic equation is

-2x^2+4x-3=0                 .... (1)

The general form of a quadratic equation is

ax^2+bx+c=0                 .... (2)

On comparing (1) and (2), we get

a=-2,b=4,c=-3

Therefore the value of a, b and c are -2, 4 and -3 respectively.

Leya [2.2K]3 years ago
3 0
<span>the quadratic equation is ax^2 +bx+c=0
So a will be -2, b = 4, c =-3</span>
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Find the median of the set of data.<br> 3, 3.9, 3.7, 3.1, 3.3 3.6, 3.5, 3.8
Juliette [100K]
<h3>Answer:  3.7</h3>

===========================================================

Explanation:

The original data set is {3, 3.9, 3.7, 3.1, 3.3 3.6, 3.5, 3.8}

Those values sort to {3, 3.1, 3.5, 3.7, 3.8, 3.9, 11.88}

There are n = 7 items in the list.

The median will be found in slot 4 because n/2 = 7/2 = 3.5 which rounds to 4.

{3, 3.1, 3.5, <u>3.7</u>, 3.8, 3.9, 11.88}

Notice how the underlined item in bold (3.7) is in slot 4.

We have three items below the median and three items above the median. That gives n = 3+1+3 = 7 items total.

----------------

Here's another way to find the median.

After sorting the values, cross off the first and last numbers

We go from

{3, 3.1, 3.5, 3.7, 3.8, 3.9, 11.88}

to

{3.1, 3.5, 3.7, 3.8, 3.9}

Then we repeat the step of crossing off the outermost numbers to get

{3.5, 3.7, 3.8}

Then once more to get

{3.7}

We end up with exactly one value, so this is the middle-most item aka the median.

5 0
2 years ago
Read 2 more answers
If x+1=7, what is the value of x2 + 22 +1?
lara31 [8.8K]

Answer:

59

Step-by-step explanation:

x+1 = 7

Subtract 1 from each side

x+1-1 =7-1

x =6

x^2 + 22 +1

6^2 +22+1

36+22+1

36+23

59

4 0
3 years ago
Read 2 more answers
What is the radius of a sphere with a surface area of 100πcm2?
blondinia [14]
Surface area of a sphere = 4πr^2
4πr^2=100π
Divide both sides by 4π
r^2=100
r=10
The radius is 10 cm.
8 0
4 years ago
Please help me plzzzz
joja [24]

Answer:

pretty sure its 12-g

Step-by-step explanation

because adding 0 is just adding nothing so you can omit the 0 and not change anything.

8 0
3 years ago
Spencer, Jaclyn, and Ayden go shrimping in
larisa [96]

The total pounds of shrimp they catch is 9.625 pounds

<h3>Sum of values and decimals</h3>

Decimal number are numbers that has decimal points. Given the following information;

The total shrimp Spencer catch = 2 pounds

The total shrimp Jaclyn catch = 3.25 pounds

The total shrimp Ayden catch = 4.375 pounds

Determine the total pounds of shrimp they catch

Total shrimp = 2 + 3.25 + 4.375

Total shrimp = 9.625 pounds

Hence the total pounds of shrimp they catch is 9.625 pounds

Learn more on sum of decimals here; brainly.com/question/1827193

#SPJ1

7 0
1 year ago
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