<u>Answer</u>
3
<u>Explanation</u>
Y varies directly as x
Y ∝ x Inserting constant of variation, k,
Y = kx
k = Y/x
= 18/6
= 3
30 times 30 plus 45 minus 456 is 489
Answer: C
Step-by-step explanation:
Your answer is correct! When you multiply 2 matrices, the inner dimensions have to be equal. If they are equal, the resulting dimensions would be the outer dimentions.
(<u>3</u>×4)(4×<u>5</u>)
Since the inner (bolded) dimensions are the same, in this case 4×4, we know these matrices can be multiplied.
Since these matrices can be multiplied, the product will be 3×5, the underlined outer dimensions.
