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pickupchik [31]
3 years ago
7

Solve the following quadratic equation 6x2 – 7x = 20

Mathematics
2 answers:
siniylev [52]3 years ago
5 0

Answer:

<h2>x = 5/2 , x = - 4/3</h2>

Step-by-step explanation:

6x² - 7x - 20 = 0

Using method of factorization

Rewrite - 7x as a difference

That's

6x² + 8x - 15x - 20 = 0

Factor the expression

That's

2x( 3x + 4) - 5( 3x + 4) = 0

Which is

(2x - 5) (3x + 4) = 0

2x - 5 = 0

2x = 5

Divide both sides by 2

x = 5/2

3x + 4 = 0

3x = - 4

Divide both sides by 3

x = -4/3

Hope this helps you

Marat540 [252]3 years ago
4 0

Answer:

x = -4/3 or x = 5/2

Step-by-step explanation:

given  6x² - 7x = 20

There are several ways to solve this, we'll choose to use the quadratic formula:

Recall that for a quadratic equation ax² + bx + c = 0

x = [ -b±√(b²-4ac)  ] / 2a

in our case, if we rearrange the equation, we will get:

6x² - 7x -20 = 0

comparing this with the general form of the quadratic equation above, we can see that

a = 6, b = -7 and c = -20

substituting these into the equation:

x = [ -b±√(b²-4ac)  ] / 2a

x = { -(-7)±√[(-7)²-4(6)(-20)] } / 2(6)

x = -4/3 or x = 5/2

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Vaselesa [24]

Answer:

Slope for...:

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Hope this helps!

3 0
3 years ago
It is reported that 50% of all computer chips produced are defective. Inspec- tion ensures that only 5% of the chips legally mar
12345 [234]

Answer:

probability of defective  = 0.0545

Probability of a chip to be stolen = 0.0917

Step-by-step explanation:

given data

all computer chips produced are defective = 50%

legally marketed are defective = 5 %

stolen = 1%

solution

we get here probability of defective that is

probability of defective = P ( insepected and defective + stolen and defective)  .........................1

put here value

probability of defective = (1 - 0.01) × 0.05 + 0.01*0.5

probability of defective  = 0.0545

and

So, Probability of a chip to be stolen given defective  =P (stolen and defective) ÷ P(defective)           ......................2

put here value

Probability of a chip to be stolen = 0.01 × 0.5 ÷ 0.0545

Probability of a chip to be stolen = 0.0917

4 0
3 years ago
How do you solve for x/3 - x/5
ch4aika [34]

Answer:

x/3 - x/5 = 2/15x

Step-by-step explanation:

Please mark brainlliest if you want.

8 0
3 years ago
What is the measure of angle R?
jolli1 [7]

The answer is m∠R = 48.59 °

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Mumz [18]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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