B is false. You cannot square a 3x1 matrix.
In order to multiply matrices, the number of columns of the first matrix must match the number of rows of the second matrix. To square a 3x1 matrix, you would be multiplying a 3x1 by a 3x1; the number of columns in the first one is 1, but the number of rows of the second matrix is 3. They are not compatible.
Answer:
y=5
Step-by-step explanation:
First simplify:
y/15=1/3
Multiply each side by 3
y/15x3=1/3x3
y/5=1
Multiply each side by 5
y=5
The answer is number 2
Since it has a negative exponent, the equation is showing exponential decay. The graph will decrease. In order to find the percent of change, we need to review our exponent properties. The product property tells us that when we raise a power to a power, we multiply the exponents. This means we can view our exponent of -2x as the product of two exponents, -2 and x. This would look like. We know that negative number exponents tell us to "flip" sides of the fraction, so that tells us that 4⁻² = 1/4² = 1/16. We can then rewrite our equation as
Exponential decay is in the form y = a(1-b)ˣ. From our equation, a = 1. We know that 1-b = 1/16; this means that b must be 15/16. Thus our percent of decrease would be 15/16 = 0.9375 = 93.75%.
Answer:
24
Step-by-step explanation:
the two times the cut into one