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insens350 [35]
2 years ago
8

3x^2 + 2x-4 = 0 help

Mathematics
2 answers:
igomit [66]2 years ago
5 0

Answer:

I dont know

Step-by-step explanation:

how to answer that

Gnesinka [82]2 years ago
3 0

Answer:

{ \rm{3 {x}^{2} + 2x - 4 = 0 }}

• let's use the quadratic formular to solve the quadratic equation given.

• Considering general quadratic equation; ax² + bx + c = 0

• therefore;

{ \tt{x =  \frac{ - b \pm \sqrt{ {b}^{2} - 4ac } }{2a} }} \\

  • a is 3
  • b is 2
  • c is -4

• substitute following the mathematical operation rules:

{ \rm{x =  \frac{ - 2 \pm \sqrt{ {2}^{2} - (4 \times 3 \times  - 4) } }{(2 \times 3)} }} \\  \\ { \rm{x =  \frac{ - 2 \pm52}{6} }} \\

• split the values:

{ \rm{either \:  \{x =  \frac{ - 2 +  \sqrt{52} }{6} \} \:  \: or \:  \:  \{x =  \frac{ - 2 -  \sqrt{52} }{6}  \} }} \\  \\ { \rm{either \:  \{x = 0.87 \} \:  \: or \:  \:  \{x =  - 1.54 \}}}

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⭕-------------------------------------⭕


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Read 2 more answers
An 16 16​-oz jar of peanut butter in the shape of a right circular cylinder is 7 7 in. high and 5 5 in. in diameter and sells fo
olya-2409 [2.1K]

Answer:

Step-by-step explanation:

The formula for determining the volume of a cylinder is expressed as

Volume = πr²h

Where

r represents the radius of the cylinder.

h represents the height of the cylinder.

π is a constant whose value is 3.14

Considering the 16 oz jar,

h = 7 inches

Diameter = 5 inches

Radius = diameter/2 = 5/2

r = 2.5 inches

Volume = 3.14 × 2.5² × 7 = 137.375 inches³

Considering the 29 oz jar,

h = 7.5 inches

Diameter = 5.25 inches

Radius = diameter/2 = 5.25/2

r = 2.625 inches

Volume = 3.14 × 2.625² × 7.5 = 162.27 inches³

1) If the cost is directly proportional to​ volume, then

If 137.375 inches³ cost $1.6

then 162.27 inches³ should cost

(162.27 × 1.6)/137.375 = $1.89

The price of the larger jar would be $1.89

2) If the cost is directly proportional to​ weight, then

If 16 oz cost $1.6, then

29 oz would cost

(29 × 1.6)/16 = $2.9

The price of the larger jar would be $2.9

7 0
2 years ago
Find the average rate of change of the function below over the interval (-4,-1).
babymother [125]

Answer:

-2

Step-by-step explanation:

\frac{f(b)-f(a)}{b-a}\\ \\=\frac{f(-1)-f(-4)}{-1-(-4)}\\ \\=\frac{-4-2}{-1+4}\\ \\=\frac{-6}{3}\\ \\=-2

Therefore, the average rate of change over the interval [-4,-1] is -2.

5 0
2 years ago
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