+0  
 
0
65
7
avatar+20 

Find x. Round to the nearest tenth if necessary.

Select one:

a. 4

b. 5.5

c. 6

d. 5

JLevy1203  Jul 30, 2018
 #1
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0

Again, using power of a point, x^2+x=30. Solve from there.

Guest Jul 30, 2018
 #2
avatar+20 
0

I have no clue what I'm doing, I have until AUG 2nd to pass this benchmark online. I'll cash app you if you help me plzz plzz 

JLevy1203  Jul 30, 2018
 #3
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0

Solving the quadratic, we get x=-6 or 5. x must be positive, so x=5

Guest Jul 30, 2018
 #4
avatar+20 
0

LOL I'm kind of talking about my benchmark.

JLevy1203  Jul 30, 2018
 #5
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0

Don't just try to get free answers, try to understand the concepts as well

Guest Jul 30, 2018
 #6
avatar+20 
0

Not free,I'll cash app, I've got all the way to the end and now I'm stuck, the tutor I had was no help at all.

JLevy1203  Jul 30, 2018
 #7
avatar+19841 
+1

​Find x. Round to the nearest tenth if necessary.

 

 

\(\begin{array}{|rcll|} \hline x\cdot (x+1) &=& 10 \cdot 3 \\ x^2+x &=& 30 \\ x^2+x-30 &=& 0 \\ (x-5)(x+6) &=& 0 \\\\ x_1 &=& 5 \\ x_2 &=& -6 \qquad \text{no solution, because }x \lt 0 \\ \hline \end{array} \)

 

d. 5

 

laugh

heureka  Jul 30, 2018

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