Jamal spends $15 on a pair of scorer shorts. he has $10 left. how much money did he have before buying the shorts? a.) m+10=15 b.) m-10=5 c.) m+15=40 d.) m-15=10 how many meatballs does raul still need to make if he already has 25 and needs a total of 32 for sunday’s dinner? a.) 32+35=b b.) 32-25=b c.) 25-7=b d.) 25+25=b at a garden store, a cherry tree costs five times as much as a pine tree. if a cherry tree costs $30, how much does a pine tree cost? p represents the cost of a pine tree a.) 30-5=p b.) 30x5=p c.)30/5=p d.) 30/25=p the quotient of some number divided by 56 is 2. what is the number? a.)112 b.)58 c.)54 d.)28 what is the value of a roll of quarters if a roll contains 40 quarters? a.)8.00 b.)10.00 c.)14.00 d.)20.00

1. D

2. B

3. C

4. D

5. B

Step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98