By null factor Law factorised eqn=
(x-3+i)(x-3-i)
x^2-6x+10
B is the correct answer. To find out why it is, we can simply put 2,800, the whole, as 100% and 6.2 into x=6.2. The left sides of both of them have the same units, and both right sides have the same units, so we can do something such as 2800/x=100%/6.2%. Then, you simply solve for x.
STEPS:
2800/x=100/6.2
<span>(2800/x)*x=(100/6.2)*x - </span>we multiply both sides of the equation by x
<span>2800=16.129032258065*x - </span>we divide both sides of the equation by (16.129032258065) to get x
<span>2800/16.129032258065=x </span>
<span>173.6=x </span>
<span>x=173.6</span>
Answer: -0.729
Step-by-step explanation:
Answer:
20% probability of a red
Step-by-step explanation:
How many marbles are there total?
12 + 10 + 6 + 10 + 22 = 28 + 32 = 60 marbles
P(red marble) = 12 red/ 60 total marbles = 12/60 = 1/5 = 20%
For the first one the price per ounce is:
$4.56/15oz=0.304 dollars per ounce, which rounds to 0.3
For the second:
$5.98/25oz=0.2392 dollars per ounce, which rounds to 0.24
The second is the cheapest price per ounce and rounds to $0.24/oz so 0.24 is the answer
