Answer:
matrices can be added together if both have the same order
Addition is both commutative and associative
matrices can be multiplied together if the number of column in the right hand matrix equals the number of row in the left hand matrix
Solve by isolating x, check by plugging in the value you got for x in the original equation
Answer:
$308.20
Step-by-step explanation:
The simple interest formula i = p·r·t applies here:
($1675)(0.046)(4) = $308.20
If you mean you need the volume then you would multiply length x width x hight
The square will have area
.. (9 cm)^2 = 81 cm^2.
The two triangles together will have area
.. (9 cm)*(12 cm) = 108 cm^2.
The sum of the areas of those three shapes is
.. 81 cm^2 +108 cm^2 = 189 cm^2
