21 its 21 because it is 21
Answer:
Step-by-step explanation:
38. 8•4 =32cm^2
39. 8+8+5+5=26 cm^2
40. Pi•r*2 so = 28.27in^3
41. 15/2=7.5 so pi•7.5^2 so area is 176.71m^3
It will need 1.8 kilograms to have 25.0 g of nickel
7x +33 < 26 isolate the term with a variable by subtracting 33
7x < -7 divide by 7
x < -1