Answer:
(b)
Step-by-step explanation:
A suitable calculator or spreadsheet can find the matrix product for you. Here, the answer choices differ in their upper left term, so we can determine the correct choice by finding the value of that term. It is the dot product of the first row of B and the first column of A.
(5)(3) +(7)(3) +(3)(2) = 15 +21 +6 = 42
This matches choice B.
The simplified expression of 6(y + 13) + 21y is 27y + 78
<h3>How to simplify the expression?</h3>
The expression is given as:
6(y + 13) + 21y
Open the brackets
6 * y + 6 * 13 + 21y
Evaluate the product
6y + 78 + 21y
Collect the like terms
6y + 21y + 78
Evaluate the like terms
27y + 78
Hence, the simplified expression of 6(y + 13) + 21y is 27y + 78
Read more about simplified expressions at
brainly.com/question/723406
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<span>The Greates Common Factor (GCF) is: 2 x 2 = 4</span>
Answer:
-17/10
Step-by-step explanation:
you have to find a common denomentaor first wich would be 10
then you have to mutiply -4/5 by 2 which would be -8/10
and then you would do regular subtraction
but since its a negative number your gonna actually add but then the final answer will be negative
-17/10
hope this helps I really suck with fractions
