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finlep [7]
3 years ago
15

An = 3n2 + 4n +5 find the first 5 terms of the following sequence

Mathematics
1 answer:
creativ13 [48]3 years ago
5 0

Answer:

              a_1=12\,,\ \ a_2=25\,\ \ a_3=44\,,\ \ a_4= 69\,,\ \ a_5= 100

Step-by-step explanation:

a_1 = 3\cdot1^2+4\cdot1+5= 3+4+5=12\\\\a_2= 3\cdot2^2+4\cdot2+5= 3\cdot4+8+5=25\\\\a_3= 3\cdot3^2+4\cdot3+5= 3\cdot9+12+5=44\\\\a_4= 3\cdot4^2+4\cdot4+5= 3\cdot16+16+5=69\\\\a_5= 3\cdot5^2+4\cdot5+5= 3\cdot25+20+5=100

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4 0
3 years ago
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Esta é a trigonometria . Se você desenhar uma linha a partir do topo da casa de luz para o barco, você terá a hypotonuse de um triângulo. Um truque é lembrar que este é um triângulo especial. É um triângulo 30-60-90 , que tem propriedades especiais mostradas na fixação abaixo . por isso sabemos que o lado adjacente que não é o hyposonuse é x√3 . Agora sabemos que x<span>√3 = 20
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divide both sides by </span><span>√3.
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7 0
3 years ago
What multiplies to be 48 and adds up to be -19
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3 0
3 years ago
What is the equation of the line with a slope of 1/4 and a y-intercept of 2?
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Equation of the line in slope intercept form is

y = 1/4 * x + 5. Slope is 1/4. Intercept is 5.

If x= 4, y = (1/4)*4 + 5 = 6.

The point (4,6) lies on the line.

Equation of the line in point slope form is

(y - y1)= m * (x - x1) where m is slope & (x1,y1) is point on the line.

Substituting slope m= 1/4 & point (4,6),

Equation of the line in point-slope form is:

(y - 6) = 1/4 * (x - 4).

Sanjay C.
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3 years ago
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Kruka [31]
Answer: A

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8 0
3 years ago
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