Answer:
Each cookie costs $1.30
Step-by-step explanation:
7x+2=11.10
Subtract 2 from both sides
7x=9.10
Divide both sides by 7
x=1.30
1-3=-2 so -2/8 is -1/4 so negative one fourth
Since you have an angle and at least one side you can use either sine, cosine or tan. For this question, you would use sine like above. Hope this helps!
The sphere has surface are of 900π m².
Step-by-step explanation:
Given,
Diameter = d = 30m
Radius = 
Surface area of sphere = 

The sphere has surface are of 900π m².
Keywords: Surface area, multiplication
Learn more about spheres at:
#LearnwithBrainly
0.45 = 45/100
45/100 = 9/20 (Simplified)