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Brums [2.3K]
3 years ago
5

Let ​ x2+11x=3 ​.

Mathematics
2 answers:
frutty [35]3 years ago
3 0
Add (11/2)^2 to both sides
x^2 + 11x + (11/2)^2 = 3 + (11/2)^2
x^2 + 11x + (11/2)^2 = 133/4
(x + 11/2)^2 = 133/4
x + 11/2 = sqrt of (133/4)
Solutions are
x = (sqrt of (133) - 11))/2
x = (-sqrt of (133) -11))/2
melamori03 [73]3 years ago
3 0
X2+11x+(-3)=0

First bracket (-3), second bracket (0)

Hope this helps.
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Can someone interpret the question please? I’m my understanding. Thank you ☺️
Feliz [49]
Answer: Bottom-Right corner
The points are (-5,6) (-5,-6) (4,-6)

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

Explanation:

What you do is go through each of the answer choices, plot the points, and see which give you a right triangle. A right triangle has one 90 degree angle. 

The upper-left choice leads to an obtuse triangle, so we can cross that off the list. It turns out that the other choices lead to right triangles.

The upper-right choice has a hypotenuse of roughly 11.18, so that's also eliminated

The bottom-left choice has a hypotenuse of 10.82, which means we cross that off the list

The bottom-right choice has a hypotenuse of 15, so we found the answer

Note: you use the distance formula to find the length of the hypotenuse. The distance formula is
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6 0
3 years ago
Arnold and jamie are both performing the same experiment. Arnold does 20 trials and gets 7 positive results. Jamie does 10 trial
Gnoma [55]

Answer:

B

Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
Use mental math to find the sum. <br><br> 150 + 20 + 25
stiv31 [10]

Answer:


50 + 20 = 70
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In conclusion, 150 + 20 + 25 equals to a total amount of 215.


Step-by-step explanation:

Have a great rest of your day
#TheWizzer

6 0
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Alja [10]

Answer:

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Y=1

Step-by-step explanation:

In solving simultaneous equations, there are three methods, we have the elimination method, substitution method or graphical method. But for the purpose of this question, we would be using Elimination method.

5y-4x =-7 Equation 1

2y+4x=14 Equation 2

Since x has the same coefficient, it's easy to eliminate by adding up the two equations

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2+4x=14

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x= 3

8 0
3 years ago
Just need these six questions answered for math :&gt;
8_murik_8 [283]

Answer:

here for answer to

Step-by-step explanation:

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