Answer: 10.16 centimeters are in 4 inchs
Step-by-step explanation:
Hi there!
To solve this problem using substitution, we need to set x equal to a value and substitute it into the other equation.
Since
x - 4y = 5,
x = 5 + 4y
3x - 7y = 10
3(5 + 4y) - 7y = 10
15 + 12y - 7y = 10
15 + 5y = 10
5y = -5
y = -1
Now that we know y is -1, we can substitute it back into the equation to find x:
y = -1
x - 4y = 5
x - 4(-1) = 5
x - (-4) = 5
x + 4 = 5
x = 1
So, your answers are x = 1 and y = -1.
Hope this helps!
Just rearrange the inequalities to make x the subject.
2 + y <= 3
Subtract 2 from both sides.
y <= 1
7x > 56
Divide both sides by 7.
x > 8
Answer:
E(5X) = 10
Step-by-step explanation:
The expected value of a random variable X is denoted as; E(X)
Now we are told it's equal to 2.
Thus;
E(X) = 2
Now, we want to find the expected value of 5X
We will use the principle from expected value derivations below;
E(cX + d) = cE(X) + d
Also;
If E(X) = z
Then;
E(aX) will give; aE(X) = az
From our question, we have;
E(X) = 2
Thus;
E(5X) = 5E(X) = 5 × 2 = 10
Answer:
I don't understand your question
