All categories

3 years ago

Simplify 3(3x-1)^2=21

Mathematics

2 answers:

GuDViN [60]3 years ago

5 0

27x^2-3=21
27x^2=24

the answer is 27x^s=24
that is my work up there

scoray [572]3 years ago

4 0

3(3x-1)^2=21

(3x-1)^2 = 7

3x-1 = square root of 7

3x = square root of 7 - 1

x = (square root of 7 - 1)/3

You might be interested in

7x=5+5x x equals what

dybincka [34]

7x=5+5x

x=5/2

It could also be 2 1/2

3 0

3 years ago

Midpoint of the line segment (-1,6), (-6,5)

zepelin [54]

The answer is:

(-7/2 , 11/2)

5 0

2 years ago

Fiona wrote the linear equation y = y equals StartFraction 2 over 5 EndFraction x minus 5.x – 5. When Henry wrote his equation,

xeze [42]

Answer:

D. $x-\frac{5}{2}y = \frac{25}{2}$

Step-by-step explanation:

Given

$y = \frac{2}{5}x - 5$

Required

Determine its equivalent

<em>From the list of given options, the correct answer is</em>

$x - \frac{5}{2}y = \frac{25}{2}$

This is shown as follows;

$y = \frac{2}{5}x - 5$

Multiply both sides by $\frac{5}{2}$

$\frac{5}{2} * y = \frac{5}{2} * (\frac{2}{5}x - 5)$

Open Bracket

$\frac{5}{2} * y = \frac{5}{2} * \frac{2}{5}x - \frac{5}{2} *5$

$\frac{5}{2}y = x - \frac{25}{2}$

Subtract x from both sides

$\frac{5}{2}y - x = x -x - \frac{25}{2}$

$\frac{5}{2}y - x = - \frac{25}{2}$

Multiply both sides by -1

$-1 * \frac{5}{2}y - x * -1 = - \frac{25}{2} * -1$

$-\frac{5}{2}y + x = \frac{25}{2}$

Reorder

$x-\frac{5}{2}y = \frac{25}{2}$

<em>Hence, the correct option is D</em>

$x-\frac{5}{2}y = \frac{25}{2}$

9 0

2 years ago

Read 2 more answers

Please please please help!!!

dalvyx [7]

9514 1404 393

Answer:

Step-by-step explanation:

Fill in the argument value and look up the function value on the graph.

$(f\circ f)(-2) = f(f(-2)) = f(2) = \boxed{2}$

7 0

1 year ago

How would you write "4/1000" In decimal form?

scZoUnD [109]

Answer:

0.004

Step-by-step explanation:

Since 4/10 is 0.4 and 4/100 is 0.04, 4/1000 must be 0.004

4 0

3 years ago

Read 2 more answers