Answer:
1)9 2)18 3)9. 4)4. 5)carpeting
Step-by-step explanation:
 1) divide 63 by 7 = 9
2)multiply 54 by 2 = 108 total weight of the boxes then divide 108 by 6 to get 18
3) 75 -30 to get remaining amount which is 45 then divide by 5 to get how much he will pay each month which is 9
4 24- 12= 12 the remaining for the 3 and divide by 3 to get 4
5) multiply 6 * 9 which is $54 which is cheaper than the $81
 
        
             
        
        
        
There are 8 students in a art club. There are 3 times as many students in chorus. How many students are in chorus?
We don't know how many students are in chorus. Use  n as the students.
n = 8×3
n = 24
The value of n is 24.
So, there are 24 students in chorus.
        
                    
             
        
        
        
Answer:
Robert Recorde. 
Step-by-step explanation:
Robert Recorde was a Welsh known for vast knowledge and experience in the field of mathematics and physics. He was born in Tenby, Pembrokeshire, Wales during the Medieval period (c. 1512). 
Robert Recorde was famously known for his work in the field of mathematics and most especially, the invention of the equal to (=) sign. He introduced it in his book titled "The Whetstone of Witte."
<em>Hence, Robert Recorde was the first english mathematician who first used the modern symbol of equality in 1557. </em>
 
        
             
        
        
        
To produce 5 guns they lose 5 butter so I think opportunity cost of one gun would be one butter.
        
             
        
        
        
Answer: 3 buses
Step-by-step explanation: If 54 students fit on a bus, and 125 students are in 8th grade,
You should divide.
125 divided by 54 is 2.31...
we can't have 2.31... buses, so we say 3 buses.