You can use F.O.I.L. for this, which if you don't know stands for first outer inner last, so multiply the first in each parentheses, then the outer, then the inner, then the last. yours would be 3*5+3*√7+(-√7)*5+(-√7)*√7 => 15+3√7-5√7-7 => 8-2√7
Final answer:
8-2√7
Hope I could help :)
3 more canisters explanation: 40/4=10, 28/4=7, 10-7=3 more canisters
The correct answer is $7.84
Answer:
mrs.Gates can serve 66 teachers
Step-by-step explanation:
1. there are 22 slices of cake
2.each trachée want 1/3 slice
3. multiply 22 by 1/3 or 3
4. the answer is 66
