Math Connections 7th
1. 1/2a=13
2.h/14=3.5
3.c/3.5=3.90; Vicky paid $13.65
4.32n=120; at 8:am, there were 60 bacteria
5.2/5r=80;200 residents were surveyed
1. To solve the equation 1/2a = 13, we can multiply both sides by 2 to isolate the variable a. This gives us a = 13*2 = 26. So, the value of a is 26.
2. To solve the equation h/14 = 3.5, we can multiply both sides by 14 to isolate the variable h. This gives us h = 14*3.5 = 49. So, the value of h is 49.
3. To solve the equation c/3.5 = 3.90, we can multiply both sides by 3.5 to isolate the variable c. This gives us c = 3.5*3.90 = 13.65. So, Vicky paid $13.65.
4. To solve the equation 32n = 120, we can divide both sides by 32 to isolate the variable n. This gives us n = 120/32 = 3.75. So, at 8:am, there were 60 bacteria.
5. To solve the equation 2/5r = 80, we can multiply both sides by 5/2 to isolate the variable r. This gives us r = 80*(5/2) = 200. So, 200 residents were surveyed.