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BaLLatris [955]

3 years ago

14

what number should be added to the expression x squared+2x to change it into a perfect square trinomial?

2 answers:

Olin [163]3 years ago

7 0

The perfect square trinomial (x + 1)² equals
x² + 2x + 1

Therefore the answer is to add 1 to the expression.

Good luck

Nookie1986 [14]3 years ago

3 0

You know that a perfect square trinomial is given by square of first term, twice the product of first and last terms and square of second term

So we have x^2 that is square of x, 2x that is twice the product of x*1, the second term shoulf be 1, that is square of 1

So your answer would be 1

If you try (x+1)^2 = x^2+2x+1

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sdas [7]

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3 years ago

Find the equation of a line that goes through points (2, 4) and (6, 8).

Ann [662]

Y=-x-3 is the answer I believe

8 0

3 years ago

Graph the solution of the system of linear inequalities.<br> y + 2x ≥0<br> 3x-2y≤6

VashaNatasha [74]

Step-by-step explanation:

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5 0

2 years ago

mia drove her car at a rate of 60 mph from her home to los angeles. her mother, katrina, made the same trip at a rate of 80 mph,

Ad libitum [116K]

So if Katrina did 80mph and

Mia did 60mph

Lets say the destination is 90 miles away that would take 1hr 30minsfor Mia and

1hr 10mins for Katrina. so that's only a gap of 20minutes not half an hour.

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ANSWER: 120miles

7 0

3 years ago

Find the average rate of change for f(x) = x2 − 3x − 10 from x = 4 to x = 6. A) 5 Reactivate B) 7 C) 9 Reactivate D) 11

White raven [17]

Answer:Rate of change is 7

Option B is correct.

Step-by-step explanation:

We need to find the average rate of change for $f(x)=x^2-3x-10$ from x = 4 to x = 6

The formula used to find average rate of change is:

$Rate\,\,of\,\,change=\frac{f(b)-f(a)}{b-a}$

Where b = 6 and x = 4

Finding f(6):

$f(x)=x^2-3x-10\\f(6)=(6)^2-3(6)-10\\f(6)=36-18-10\\f(6)=36-28\\f(6)=8$

Finding f(4):

$f(x)=x^2-3x-10\\f(4)=(4)^2-3(4)-10\\f(4)=16-12-10\\f(4)=16-22\\f(4)=-6$

Now Putting values:

$Rate\,\,of\,\,change=\frac{f(b)-f(a)}{b-a}$

$Rate\,\,of\,\,change=\frac{8-(-6)}{6-4}\\Rate\,\,of\,\,change=\frac{8+6}{2}\\Rate\,\,of\,\,change=\frac{14}{2}\\Rate\,\,of\,\,change=7$

So, Rate of change is 7

Option B is correct.

Keywords: Rate of Change

Learn more about Rate of Change at:

#learnwithBrainly

8 0

3 years ago