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Inga [223]
3 years ago
11

PLEASE ANSWER solve x^(2)+5x+6=0

Mathematics
2 answers:
zhuklara [117]3 years ago
5 0
Use the quadratic formula -b+(square root)b^2-4ac / 2a
a=1, b=5, c=6
-5+(square root)5^2-4(1)(6) / 2(1)
x=-2, x=-3
sammy [17]3 years ago
3 0

Answer:

x = -2      <u><em>OR</em></u>     x = -3

Step-by-step explanation:

=> x^2+5x+6 = 0

Using mid-term break formula

=> x^2+2x+3x+6 = 0

=> x(x+2)+3(x+2) = 0

Taking x+2 common

=> (x+2)(x+3) = 0

So Either,

x+2 = 0   <u><em>OR</em></u>    x+3 = 0

x = -2      <u><em>OR</em></u>     x = -3

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A company makes concrete bricks shaped like rectangular prisms each brick is 6 inches long 3 inches wide and 2 inches tall how m
Tanzania [10]
The Answer is. 50 bricks





6 0
3 years ago
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If the original price was $58 and the new price is $66 what is the percent change
Serjik [45]
I believe the answer is 65%. i'm not sure
6 0
3 years ago
When the outliers are removed, how does the mean change?
vagabundo [1.1K]

Answer:

The mean increases by 3.

Step-by-step explanation:

<u>What's an outlier?</u>

  • An outlier is a data point that's very different from the other data points. In this example, the outlier is 50, as the other data points are around the number 80.

<u>What's the mean of a data set?</u>

  • The mean is the average of a data set. It's found by adding up all the numbers in the set and then dividing by the number of data points there is.

<u>How do we solve this problem?</u>

First, we find the mean of the data set with the outlier, 50.

  • \frac{50+76+78+79+79+80+81+82+82+83}{10}
  • \frac{770}{10}
  • 77  

Next, we find the mean of the set without the outlier.

  • \frac{76+78+79+79+80+81+82+82+83}{9}
  • \frac{720}{9}
  • 80

Lastly, we subtract 77 from 80 to find the difference.

  • 80 - 77 = 3

Therefore, the answer is The mean increases by 3.

5 0
3 years ago
The oblique prism below has an isosceles right triangle base.
lesya692 [45]

Answer:

A.

Step-by-step explanation:

In the figure attached, the oblique prism is shown.

The volume of the prism is:

V = b*h

where h is the height and b is the area of the base

Given that the base is an isosceles right triangle, its area is:

b = 1/2*x²

The height of the prism is (x + 2). Then, the volume is:

V = 1/2*x²*(x + 2)

V = 1/2*x³ + x²

5 0
3 years ago
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