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Veseljchak [2.6K]
2 years ago
6

What are the values of a, b, and c in the quadratic formula given the equation 2x^2 + 6x= -8 ?

Mathematics
2 answers:
AlladinOne [14]2 years ago
8 0
It should be written in the form ax²+bx+c=0,
so you meed to move -8 to the left side
2x²+6x+8=0
the number in front of x²  is a
the number in front of x is b
the number without x is c,
so a=2, b=6,c=8
shutvik [7]2 years ago
8 0
QUADRATIC \: \: EQUATIONS \\ \\ \\\\Standard \: form \: of \: Quadratic \: equation \: is \: - \\ a {x}^{2} + bx + c \: = \: 0 \\ \\ Given \: expression \: \: - \\ 2 {x}^{2} + 6x = - 8 \\ \\ 2 {x}^{2} + 6x + 8 = 0 \\ \\ Comparing \: with \: Standard \: form \: \\ \\ We \: get \: \\ \\ a = 2 \\ b = 6 \\ c = 8 \: \: \: \: \: \: \: \: \: \: Ans.
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The line goes through the ordered pair (10, 6) It has a y-intercept of -2.
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Answer: the x-intercept would be (2,-2)

Step-by-step explanation:

6 0
3 years ago
The number of yards of fabric needed for Robs costume is (7/8+1/2+1 3/4)÷2. How does the amount of fabric needed for Robs costum
exis [7]

The amount of fabric needed for Jimmy's costume is not stated, we can only determine the amount needed for Rob's costume, which makes it impossible to compare the amounts needed for both of their costumes. If this omission was an error, then you can find the difference between these amounts if the amount needed for Jimmy's costume is stated explicitly.

Step-by-step explanation:

The number of yards of fabric needed for Robs costume is (7/8+1/2+1 3/4)÷2

Assuming 1 3/4 is a mixed fraction.

= (7/8 + 1/2 + 7/4) ÷ 2

= (7 + 4 + 2) ÷ (8 × 2)

= 13/16 yards

Suppose 2 yards of fabric is needed for Jimmy's costume, then comparing with Rob's yards, we see that Jimmy's costume requires (2 - 13/16 = 19/16) more yards than Rob's costume.

8 0
3 years ago
10 increased by the quotient of a number and 6 is 15
Makovka662 [10]
<h2>Verbal Phrase to Mathematical Phrase</h2><h3>Answer:</h3>

10 +\frac{n}{6} = 15\\

<h3>Step-by-step explanation:</h3>

Let that number be n.

The quotient of a number and 6 is \frac{n}{6}\\.

"Increased" is just another term for "plus (+)" so 10 increased by The quotient of a number and 6 is 10 + \frac{n}{6}\\

And it tells us that it is 15 so it must be 10 +\frac{n}{6} = 15\\

3 0
2 years ago
A girl scout has (5x+18)
zhannawk [14.2K]

Step-by-step explanation:

(5x+18) - (3x+12)

5x+18=3x+12

5x-3x=2x

18-12=6

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3 0
3 years ago
What is the area of the parallelogram
defon

Answer:

C) 240

Step-by-step explanation:

b = 20 cm

h = 12 cm

<h3>Area = b . h</h3>

= 20 . 12

= 240 cm²

<h3>#CMIIW</h3>

6 0
3 years ago
Read 2 more answers
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