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2 years ago

8

Solve the system of equations:

1 answer:

zvonat [6]2 years ago

6 0

Answer:

the correct answer would be Y! i took it!! make me most brainlessly please!!!

Step-by-step explanation:

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Find the infinite sum of 10,5,2.5,1.25...

____ [38]

Notice this is a geometric progression since each number multiplied by some factor equals the next number in the sequence, in this case,

$10 \times r = 5 \Rightarrow r=0.5$

Then by applying the formula for sum to infinity of a geometric progression,
$S_\infty = \frac{a}{1-r} = \frac{10}{1-0.5} = 20$

3 0

2 years ago

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What expression would simplify to 9x+y+6

Montano1993 [528]

3x+3x+3x+y+3*2 ?

I only seperated the variabled number

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3 years ago

3) the product of n and 9

insens350 [35]

Answer:

9n

Step-by-step explanation:

i mean 9 x n = 9n. straight forward...

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2 years ago

the first three steps of completing the square to solve the quadratic equation X2+4X-6=0 are shown below. what re the next 3 ste

Vilka [71]

Answer:

see the explanation

Step-by-step explanation:

<u><em>The complete question is</em></u>

The first three steps of completing the square to solve the quadratic equation x2 +4x -6= 0, are shown below.

Step 1: x2 +4x= 6

Step 2: x2 +4x+4=6+4

Step 3: (x +2)^2=10

What are the next 3 steps?

we have

step 4

Take square root both sides

$\sqrt{(x+2)^2} =\sqrt{10}$

step 5

Simplify

$x+2=\pm\sqrt{10}$

step 6

Solve for x

subtract 2 both sides

$x=-2\pm\sqrt{10}$

$x_1=-2+\sqrt{10}$

$x_2=-2-\sqrt{10}$

3 0

2 years ago

Help with question three please :)

Svetllana [295]

Answer:

i believe its a

Step-by-step explanation:

3 0

2 years ago

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