Ask question

Ask question

All categories

3 years ago

5

How do I answer this using the square root method? -9(3x-2)^2=-225

1 answer:

dedylja [7]3 years ago

8 0

$\bf -9(3x-2)^2=-225\implies (3x-2)^2=\cfrac{-225}{-9}\implies (3x-2)^2=\cfrac{225}{9}
\\\\\\
3x-2=\sqrt{\cfrac{225}{9}}\implies 3x-2=\cfrac{\sqrt{225}}{\sqrt{9}}\implies 3x-2=\cfrac{15}{3}
\\\\\\
3x=\cfrac{15}{3}+2\implies 3x=\cfrac{21}{3}\implies x=\cfrac{21}{9}$

You might be interested in

4,3⅔,3⅓,3 common difference

Lana71 [14]

Answer:

one third

Step-by-step explanation:

3 0

3 years ago

I need help with this

Kruka [31]

Answer:

<h2>V = 235.5 in³</h2>

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

From the pictue we have r = 5in and H = 3in. Substitute:

$x=\pi(5^2)(3)=\pi(25)(3)=75\pi\ in^3$

$\pi\approx3.14$

Therefore

$x=(75)(3.14)=235.5\ in^3$

5 0

3 years ago

Read 2 more answers

Which of the following us the graph of you=5

JulijaS [17]

Y = 5

i think that what you meant

so the point will be (0,5) and will be a horizontal line at y=5

hope that helps

5 0

3 years ago

How many quarts are in a milliliter

grin007 [14]

There is 0.00105669 quarts in a milliliter

3 0

3 years ago

Solve t/he system of linear equations given by x + y = 1 and ax − by = c, where a, b, c are real numbers. Note: The solution in

Phantasy [73]

Answer:

see explanation

Step-by-step explanation:

Given the 2 equations

x + y = 1 → (1)

ax - by = c → (2)

In (1) subtract y from both sides

x = 1 - y → (3)

Substitute x = 1 - y into (2)

a(1 - y) - by = c ← distribute left side

a - ay - by = c ( subtract a from both sides )

- ay - by = c - a ( multiply through by - 1 )

ay + by = a - c ← factor out y from each term on the left side

y(a + b) = a - c ← divide both sides by (a + b)

y = $\frac{a-c}{a+b}$ ← substitute into (3)

x = 1 - $\frac{a-c}{a+b}$ = $\frac{a+b}{a+b}$ - $\frac{a-c}{a+b}$ = $\frac{a+b-a+c}{a+b}$ = $\frac{b+c}{a+b}$

8 0

2 years ago