Solve for x. x2 + 9x = 0 a 0, -9 b 0, 9 c 1, -9 d 1, 9

Mathematics

1 answer:

alekssr [168]3 years ago

5 0

<span>x2 + 9x = 0
x(x+9) = 0
x=0
x+9 = 0; x = -9

answer is </span><span>a 0, -9</span>

You might be interested in

Need heeeelp please

malfutka [58]

Answer:

please how

Step-by-step explanation:

I will help ypu

4 0

2 years ago

A bucket is filled with water up to the 4 gallon mark. The bucket springs a leak and water begins draining at a constant rate of

zheka24 [161]

Answer:

n = 4 - $\frac{5}{19}$ t

Step-by-step explanation:

n determines the amount of water in the bucket, it's basically the total, so that's why it's there. 4 is the number of gallons of water that you started with and 5/19 is the number of gallons that are draining per minute. t is the amount of time or minutes that have gone by. So, that's why the equation is n = 4 - $\frac{5}{19}$ t

3 0

3 years ago

If 5+ 20 -22-3х - 10.2-2x+5, what is the value of х?

Elodia [21]

Answer:

Step-by-step explanation:

$5+20\cdot2^{2-3x}=10\cdot2^{-2x}+5\qquad\text{subtract 5 from both sides}\\\\20\cdot2^{2-3x}=10\cdot2^{-2x}\qquad\text{divide both sides by 10}\\\\2\cdot2^{2-3x}=2^{-2x}\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\2^{1+2-3x}=2^{-2x}\\\\2^{3-3x}=2^{-2x}\iff3-3x=-2x\qquad\text{subteact 3 from both sides}\\\\-3x=-2x-3\qquad\tex\qquad\text{add}\ 2x\ \text{to both sides}\\\\-x=-3\qquad\text{change the signs}\\\\x=3$

8 0

3 years ago

What are the zeros of the quadratic function f(x) = 6x ^ 2 - 24x + 1 ?

ZanzabumX [31]

Answer:

x = $\frac{12+\sqrt{138} }{6}$ and x = $\frac{12-\sqrt{138} }{6}$

Step-by-step explanation:

Let's use the quadratic formula, which states that for a quadratic of the form ax² + bc + c, the zeroes are: $x=\frac{-b+\sqrt{b^2-4ac} }{2a}$ or $x=\frac{-b-\sqrt{b^2-4ac} }{2a}$ .