3 years ago

For the following geometric sequence find the explicit formula. {12, -6, 3, ...}

1 answer:

Furkat [3]3 years ago

5 0

X divide by -2

this is your formula

x/ (-2)

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Norma-Jean [14]

Answer:

$y=-11$

Step-by-step explanation:

$y=5x+4\\y=5\left(-3\right)+4\\y=-5\cdot \:3+4\\y=-15+4\\y=-11$

6 0

2 years ago

melamori03 [73]

Answer: 2:4

Step-by-step explanation:

1+2=3

6/3= 2

1:2 = 2:4

4 0

2 years ago

Sergeeva-Olga [200]

3000/30=100every day

100/25=4
So she buys 4 L of milk every day.
So t=4.

4 0

3 years ago

nlexa [21]

Answer:

$x_{1} =$ $\frac{5 + \sqrt{10} }{3}$ and $x_{2} =$ $\frac{5 - \sqrt{10} }{3}$

Step-by-step explanation:

3x^2-10x+5=0

$x_{1}$ = $\frac{10 + \sqrt{10^{2}-4*3*5 } }{2*3}$ $x_{2} =$ $\frac{10 - \sqrt{10^{2}-4*3*5 } }{2*3}$

$x_{1} =$ $\frac{10 + \sqrt{100-60} }{6}$ $x_{2} =$ $\frac{10 - \sqrt{100-60} }{6}$

$x_{1} =$ $\frac{10 + \sqrt{40} }{6}$ $x_{2} =$ $\frac{10 - \sqrt{40} }{6}$

$x_{1} =$ $\frac{10 + 2\sqrt{10} }{6}$ / 2 $x_{2} =$ $\frac{10 - 2\sqrt{10} }{6}$ / 2

$x_{1} =$ $\frac{5 + \sqrt{10} }{3}$ $x_{2} =$ $\frac{5 - \sqrt{10} }{3}$

3 0

3 years ago

jarptica [38.1K]

Write an equation

10 + 3x = 15 +2x
-2x -2x
-----------------------
10 + x (1x) = 15
-10 -10
----------------------
x = 5

cost= 25 (10 + 15)

6 0

4 years ago