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3 years ago

Solve 2x2 – 5x + 1 = 3 for x.

Mathematics

2 answers:

Vladimir79 [104]3 years ago

5 0

Answer:

The correct answer is option D.

kirill [66]3 years ago

3 0

Answer:

x = 0.4

Step-by-step explanation:

Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.

Assuming that (2x2) means 2 being multiplied by 2. Then we can use the following process to solve the equation given to us in the question.

$2*2-5x+1 = 3$ .... First, multiply both 2's together

$4-5x+1 = 3$ ....combine 4 and 1

$5-5x = 3$ ....subtract 5 on both sides

$-5x= -2$ ... divide both sides by -5

$x = 0.4$

After following the process and solving for x we can see that the value of x is 0.4

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

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4 years ago

A polygon will be dilated on a coordinate grid to create a smaller polygon. The polygon is dilated usi X

Reika [66]

Answer:

D). (x, y) --> (0.9x, 0.9y).

Step-by-step explanation:

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3 years ago

the measure of the angle is 88 degrees greater than its complement. what is the measure of the complement?

vazorg [7]

Let the angle be x and it's complement be c.

Then, x = c + 88 and x + c = 90

Substitute the first equation in the second.

(c+88) + c = 90
2c+88 = 90
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Compliment = 1
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6 0

4 years ago

Find the area of the figure.

Hitman42 [59]

Answer:

Step-by-step explanation:

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5 0

4 years ago

A rectangular parking lot must have a perimeter of 440 feet and an area of at least 8000 square feet. Describe the possible leng

tangare [24]

Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

A rectangular parking lot must have a perimeter of 440 feet

Perimeter of rectangular plot =2(l+b)=2(x+y)=440

2(x+y)=440

x+y=220

y=220-x

We are also given that an area of at least 8000 square feet.

So, $xy \leq 8000$

So, $x(220-x) \leq 8000$

$220x-x^2 \leq 8000$

So, $220x-x^2 = 8000\\-x^2+220x-8000=0$

General quadratic equation : $ax^2+bx+c=0$

Formula : $x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

$x=\frac{-220 \pm \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=\frac{-220 + \sqrt{220^2-4(-1)(-8000)}}{2(-1)} , \frac{-220 - \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=45.96,174.031$

So, The possible parking lengths are 45.96 feet and 174.031 feet

3 0

3 years ago