Answer:
7
Step-by-step explanation:
a=2
b=2
c=1
2ab cos C=a²+b²-c²=2²+2²-1²=4+4-1=7
Answer:
1224 and 3015
Step-by-step explaination
You have to do 36 lined up with 34 to get 1224
Make sure you add a zero the second time you multiply
For the second promblem, you line up 45 with 67 to get 3015.
64 ounces
Because,
1 pound = 16 ounces
4 x 16 = 64 ounces.
Answer:
70 , 84 , 105
Step-by-step explanation:
sum their ages , 10 + 12 + 15 = 37
divide the amount by this sum to find the value of one part of the ratio.
259 ÷ 37 = 7 ← value of 1 part of the ratio , then
10 parts = 10 × 7 = 70 euros ← Tom's share
12 parts = 12 × 7 = 84 euros ← Mary's share
15 parts = 15 × 7 = 105 euros ← Bill's share
Ok so first you take $64.80 and multiply it by 2.5. You get $162. Now take $162 and subtract $20 from it. You are left with $142.
