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3 years ago

Cuadrado de un binomio 2 (7+x)

2 answers:

8 0

Un binomio cuadrado perfecto es un trinomio que cuando factorizada le da el cuadrado de un binomio. Por ejemplo, el trinomio x ^ 2 + 2xy + y ^ 2 es un binomio cuadrado perfecto, ya que son los factores a (x + y) ^ 2.
Hope this helps!
¡Espero que esto ayude!

Taya2010 [7]3 years ago

7 0

Ok so first you have to solve what is inside parentheses , so 2 is on the outside and (7 +x) is on the inside so we are going to distribute which means 2 times 7 is 14 +2x.

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Only need help on number 5 and 6

Alborosie

5) since (x-a)^2+(y-b)^2=r^2

plug in (-5,2) as (a,b) and r=3

Making the equation:

(x+5)^2+(y-2)^2=9

6) (x-0)^2+(y-0)^2=r^2

since we have (0,5)

0^2+5^2=r^2

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3 years ago

1) A ball is dropped from a height of 50 feet. How long after it is dropped will it reach a height of 18 feet?

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Answer: 1.41 seconds

Step-by-step explanation:

The problem gives the initial velocity by saying "dropped." This indicates a velocity of zero. Acceleration can also be found because the object is in free fall. It would experience the acceleration of gravity. We can use the kinematic equation:

$(y_f-y_i)=V_it+\frac{1}{2}at^2$

The velocity term completely cancels because the object was dropped with an initial velocity of 0.

$(18-50)=\frac{1}{2} (32.17)t^2\\$

$-32=-16.085t^2\\t=\sqrt{1.989} =1.41s$

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4 years ago

Read 2 more answers