You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
Answer:
41/60
Step-by-step explanation:
Convert the fractions into like denominators: 7/30 = 140/600, 9/20 = 270/600
Add: 140/600+270/600 = 410/600
Divide into a smaller fraction: 41/60
Answer:
The answer is 0.23
Step-by-step explanation:
Hope this helps.
Pls tell me if Im not correct.
Let w = the number of weeks you talked on your cell phone
60 min = 1 hr
60w + 250 = total number of minutes
Answer is x=-2 hope that helps
