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dem82 [27]
3 years ago
11

Multiply the binomial (3x-2)(3x+2)

Mathematics
1 answer:
tigry1 [53]3 years ago
5 0
Multiply every term of the left binomial by every term of the right binomial.

(3x - 2)(3x + 2) =

= 3x * 3x + 3x * 2 + (-2) * 3x + (-2) * 2

Do the four multiplications.

= 9x^2 + 6x - 6x - 4

Now combine like terms.

= 9x^2 - 4
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Calcula la altura de Juan sabiendo que proyecta una sombra de 2 metros en el momento en que Pedro que mide 1,80 metros proyecta
den301095 [7]

Answer:

La altura de Juan por lo tanto es de 1.6 metros de altura

Step-by-step explanation:

Segun los datos que se encuentran en el ejercicio, tenemos lo siguiente:

Juan proyecta una sombra de 2 metros en el momento en que Pedro que mide 1,80.

Supongamos que x es la altura de juan que tenemos que calcular.

La altura de Juan por lo tanto la podemos calcular de la siguiente manera con la siguiente formula:

x= (1.8 metros/2.25 metros)*2

x=1.6 metros

La altura de Juan por lo tanto es de 1.6 metros de altura

5 0
3 years ago
Choose the point-slope form of the equation below that represents the line that passes through the point (−1, 6) and has a slope
ad-work [718]
Y-6=-3(x+1) is the correct point slope form
4 0
4 years ago
Huntsville population grows from 25000 to 28000. what is the percent increase
ivann1987 [24]
28000 - 25000 =3<span>000

</span>3000/25000 x 100 = 12%

answer: 12% increase
3 0
4 years ago
Read 2 more answers
The value of a collectible coin can be represented by the equation Y=2x+15, where x represents its age in years and y represents
muminat

Answer:

53

Step-by-step explanation:

2*19 =38

then by substituting 2x=38

then,

38+15=53

5 0
4 years ago
Read 2 more answers
Equivalent ratio for 12/9
Oliga [24]
In order to make a fraction a ratio, you must simplify it if it is needed. So for 12/9, you can divide 3 from the numerator and denominator. That would equal 4/3. Now that it is simplified, you can make it into a ratio. (can be using ":" or using the word "to") 
One way it can be used is --> 4:3
Another way --> 4 to 3 
Good luck!
8 0
4 years ago
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