Find the matrix product when possible.
A.
[-84 -13]
B. 
C. 
D. 
Answer: B
You might also like to view...
Factor:
A survey showed that students had these preferences for instructional materials. Use the graph to answer the question.
About how many students would you expect to prefer written materials in a school of 450 students?
A. About 162 students B. About 41 students C. About 9 students D. About 81 students
Solve the problem.Elizabeth is making matching holiday outfits for herself and her 3 children. Elizabeth's outfit requires 2
yds of fabric and each child's outfit requires 
yds. She finds a 4-yd remnant on sale. Is this enough material to make all 4 outfits? If not, how much more material is needed?
A. Yes
B. No; 
yds
If the lengths of three sides of a triangle are known, then the following formula, known as Hero's (or Heron's) formula is sometimes used:
? 
?wherea,b, andcare the given lengths of the sides, and 
. Use this formula to find the area of a triangle with the lengths given below (correct to the nearest square foot).
? 
ft, 
ft, and 
ft
?
A. 41 ft2
B. 3 ft2
C. 6 ft2
D. 13 ft2
E. 14 ft2