The answer is A. (-4,1) is the solution to the system of linear equations <span />
Given:
The expression is
To find:
The value of the expression.
Solution:
We have,
Convert the mixed fraction in improper fraction.
Taking LCM, we get
Convert it into mixed fraction.
Therefore, the correct option is C.
Answer:
First, we have two marbles, and i guess that each one has the same probability of being picked at random (actually they have different densities, so one may have a larger probability than the other).
The possible outcomes are:
S G
S S
G S
G G
Now, suppose that we want to find the probability of the S G outcome.
In the first selection, we want to pick the silver marble, with a probability of ps,
In the second selection, we want to pick the gold marble, with a probability pg
As the events are independent, the joint probability will be equal to the product of the probabilities for each selection:
P = ps*pg
Now, if both marbles have the same probability of being picked, then:
ps = 0.5
pg = 0.5
P = 0.5*0.5 = 0.25
And this will be the same for each outcome.
Answer:
x=-2
Step-by-step explanation:
25+6x=21+4x
Step 1: Simplify both sides of the equation.
6x+25=4x+21
Step 2: Subtract 4x from both sides.
6x+25−4x=4x+21−4x
2x+25=21
Step 3: Subtract 25 from both sides.
2x+25−25=21−25
2x=−4
Step 4: Divide both sides by 2.
x=−2
It's answer a y=x^2
multiple each number twice
4•4 16
2•2 4
3•3 9