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BigorU [14]
3 years ago
7

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

Mathematics
2 answers:
Kaylis [27]3 years ago
7 0

Answer:

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

Step-by-step explanation:

The standard form of a quadratic equation is

ax² + bx + c = 0 ( a ≠ 0 )

Compare  - 2x² + 4x - 3 = 0 to the standard, giving

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

iren [92.7K]3 years ago
3 0

Answer:

See below in bold.

Step-by-step explanation:

-2x^2 + 4x  - 3 = 0     Compare this with the standard form:

ax^2  + bx + c = 0

We see that a = -2, b = 4 and c = -3.

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3. An elastic band which is 72 cm long<br> to 90 cm. Find the percentage increase
Murljashka [212]

Answer:

25% increase

Step-by-step explanation:

Take the new number and subtract the original amount

90-72 = 18

Divide this amount by the original amount

18/72 = .25

Multiply by 100

25%

This is the percent increase

7 0
3 years ago
Which equation represents the vertical asymptote of the graph?
Annette [7]

The curve is  y equals 0 from negative x to negative y near x equals negative 8.

If a curve has Vertical Asymptote i.e the line x=p,it is never touched by the given curve.The curve remains almost parallel to the line x=p, till the end.The two i.e a line and curve will never meet each other.

→ x is almost equal to p but not p.

so in the denominator , it is x=-8,

Vertical Asymptote occurs when we put , denominator of curve=0.

so vertical asymptote of curve is : x= -8

8 0
3 years ago
Rename 2/5 as a percent_______________________
loris [4]

It can be helpful to remember that "%" is just a shorthand way to write "/100" (divided by 100, or per 100, or per cent). ("Cent" is often used to refer to 100 or 1/100. A "cent" is 1/100 of a dollar, or 1/100 of an acre, for example. A <em>cent</em>ury is 100 years.)

Make the denominator of your fraction be 100. Multiply numerator and denominator by 20/20.

(2/5)×(20/20) = 40/100 = 40%

You can also get there via decimals.

... 2/5 = 0.4 = 0.40 (40 hundredths) = 40/100 (40 hundredths) = 40%

Or, you can multiply by 100%.

... (2/5)×(100%) = (200/5)% = 40%

7 0
3 years ago
A student has $5.00 to spend on a poster, paint, and stickers. The total cost for the
babunello [35]

Answer:

2.8+.55x=5 x=4

Step-by-step explanation:

5-2.8=2.2

2.2/.55=4

4 0
2 years ago
Write the standerd form for thirty thousand,four hundred five and three thousandths.
sveta [45]
30 Thousand: 30,000
4 Hundred and Five: 405
3 Thousandths: 3/1000
Final Answer; 30,405 \frac{3}{1000}
6 0
3 years ago
Read 2 more answers
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