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Alex73 [517]
3 years ago
7

What is the value of a, b, and c in the quadratic equation -2x^2+4x-3=0

Mathematics
2 answers:
Fudgin [204]3 years ago
8 0
Remember the quadratic equation is in the genreal form of ax^2 + bx + c = 0.  So a, b, and c, are the respective coefficients.  In your problem the a is -2, b is 4, and c is -3.
amm18123 years ago
6 0
A = -2
b = 4
c = -3

They are the coefficients to the terms in the equation<span />
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What is the equation of the line that is parallel to 8x-5y=2 and goes through the point (-5,-2)
Stella [2.4K]

Answer:

8x - 5y = - 30

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange 8x - 5y = 2 into this form

Subtract 8x from both sides

- 5y = - 8x + 2 ( divide all terms by - 5 )

y = \frac{8}{5} x - \frac{2}{5} ← in slope- intercept form

with slope m = \frac{8}{5}

• Parallel lines have equal slopes, hence

y = \frac{8}{5} x + c ← is the partial equation of the parallel line

To find c substitute (- 5, - 2) into the partial equation

- 2 = - 8 + c ⇒ c = - 2 + 8 = 6

y = \frac{8}{5} x + 6 ← in slope- intercept form

Multiply through by 5

5y = 8x + 30 ( subtract 5y from both sides )

0 = 8x - 5y + 30 ( subtract 30 from both sides )

8x - 5y = - 30 ← in standard form

3 0
3 years ago
Can someone help me on all three of these
Lera25 [3.4K]
5).85 6.)100 7.)40hope this helps this id what im positive of
4 0
2 years ago
Evaluate the expression when x = –11. 2x – 19 <br> a. 41 <br> b. 3 <br> c. –3 <br> d. –41
WARRIOR [948]
2(-11)-19
-22-19
-41

D is the answer
5 0
3 years ago
What is 0.31 written as a percent?
aalyn [17]
It is 31%.

To explain, you have to just have to multiply 0.31 by 100, and then add a percentage sign.
7 0
3 years ago
Read 2 more answers
I took a picture of the question
cluponka [151]

Answer:

27.5 inches^2

Step-by-step explanation:

Area of a triangle =

\frac{bh}{2}

Plugging in the equation,

\frac{11 \times 5}{2}   =  \frac{55}{2}  \\  \frac{55}{2}  = 27.5

7 0
2 years ago
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