12, or -12
12*12 = 144
-12*-12 = 144
2(x+6)=x(x+1)
2x+12=x^2+x
x^2-x-12=0
(x-4)(x+3)=0
x-4=0
x=4
x+3=0
x=-3
Answer:
start by going to the left three spaces over on the "X" axis (-3)
then go down seven spaces until both the "X" axis is over -3 and the -7 is on "Y" axis
(hope I helped)
Answer:
176/1125 or 0.156
Step-by-step explanation:
There are 15 bulbs, of which 4 are 23-watt. The probability of selecting a 23-watt bulb = 4/15. If we call this probability x, then x = 4/15.
The probability of selecting a 13-watt or 18-watt bulb is the probability of not selecting a 23-watt bulb. If we call this y, y = (6+5)/15 = 11/15. It follows that x and y are mutually exclusive. Here, we have a binomial distribution.
The number of ways of selecting exactly two 23-watt bulbs out of three is
The probability of selecting them is
It's the same as normal division. All you need to do is add the decimal in. Let me show you:
2.5/2
2/2 What's 2 divided by 2? It's <em><u>1</u></em><em><u>.</u></em>
.5/2 What's 5 divided by 2? <u>2.5</u>, right? But since it's .5 (not 5) divided by 2, the decimal goes somewhere else.<em> Since the 5 comes just to the right of the decimal, so will the <u>25</u>. You have </em><em><u>.25</u></em><u>.</u>
<em><u>1 + .25 = 1.25</u><u /></em>. And that's the answer! 2.5/2=1.25. See how I broke it up into pieces? It makes life easier.
<em>
</em><em>Don't forget to rate this answer the Brainliest!</em>
