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vovikov84 [41]
3 years ago
12

The quadratic formula gives which roots for theequation 3x² + 3x =2?

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
5 0

Answer: the person above is correct

Step-by-step explanation: APEX

tiny-mole [99]3 years ago
3 0

Answer:

The exact values of roots:

$x_{1}=\frac{-3+\sqrt{33}}{6}$

$x_{2}=\frac{-3-\sqrt{33}}{6}$

Approximation:

x_{1}\approx0.457

x_{2}\approx -1.457

Step-by-step explanation:

3x^2 + 3x =2\\3x^2 + 3x -2=0

Using the quadratic formula:

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

$x=\frac{-3\pm \sqrt{3^2-4\cdot \:3\left(-2\right)}}{2\cdot \:3}$

$x=\frac{-3\pm\sqrt{33}}{2\cdot \:3}$

$x=\frac{-3\pm\sqrt{33}}6}$

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3 years ago
A rectangular kitchen is 4 meters longer than it is wide. If the area of the kitchen is 192 square feet meters, how many meters
Lunna [17]
Lets x = width
length = x + 4 (4 meters longer than wide)

A = L * W
192 = x ( x +4)
192 = x^2 + 4x
x^2 + 4x - 192 = 0
(x +16)(x-12) = 0
 x - 12 = 0, x = 12
 x + 16 = 0, x = -16
so width x = 12
length = 12 + 4 = 16 (4 meters longer than wide)

answer. J
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3 0
3 years ago
Need ASAP<br><br> Evaluate h^-2 g for h = 3 and g = 27.<br><br> 9<br> 3<br> 1/3
tangare [24]

Answer:

3

Step-by-step explanation:

h^-2 g

h= 3 and g = 27

(3) ^-2 (27)

1/3^2 (27)

1/9 *27

27/9

3

5 0
3 years ago
A newspaper’s cover page is 3/8 text, and photographs fill the rest. If 2/5 of the text is an article about endangered species,
jolli1 [7]

Answer:

\frac{3}{20}

Step-by-step explanation:

Let x be the cover page

We are given that a newspaper 's cover page is \frac{3}{8} text and photograph fill the rest.

We have to find that how much part of cover's page is the article about endangered species

Text =\frac{3}{8}x

Remaining part =x-\frac{3}{8} x

Remaining part =\frac{8x-3x}{8}=\frac{5}{8} x

Therefore, a newspaper;s cover page fill with  Photograph =\frac{5}{8}

If the article about endangered species=\frac{2}{5} of text

Therefore, the article about endangered species=\frac{2}{5}\times\frac{3x}{8}=\frac{3}{20}x

Hence,  the article about endangered species is \frac{3}{20}of the cover page.

7 0
3 years ago
Read 2 more answers
Despite booming new car sales with their cha-ching
Elena-2011 [213]

Answer to the 1st question: 8 years

Answer to the 2nd question: The year 2022

=======================================================

Further explanation:

x = number of years after 2008

y = average price of a new car

The prices are going up by $1250 per year on average. This is the slope because the slope is the rate of change. So m = 1250.

The y intercept is b = 30100 as this is the price in 2008.

This leads us to go from y = mx+b to y = 1250x+30100

Plug in x = 0 and you should get y = 30100.

Also, plugging x = 6 into the equation leads to y = 37600 to help confirm things.

-----------------

Next, we plug in y = 47600 and solve for x.

y = 1250x+30100

47600 = 1250x+30100

47600-30100 = 1250x

17500 = 1250x

1250x = 17500

x = 17500/1250

x = 14

This means 14 years after the year 2008 is when the average new car price will be $47,600.

2008+14 = 2022

2022-2014 = 8

Therefore, <u>8 years</u> after 2014 (aka the <u>the year 2022</u>) is when the new car average price will be $47,600.

6 0
2 years ago
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