Answer:
b answer
Step-by-step explanation:
Answer:
A = 
Step-by-step explanation:
∵ The diameter of the mug is 8 cm and using to cut out circular cookies
∴ The diameter of each circular cookie is 8 cm
∴ Its radius = 8 ÷ 2 = 4
∵ Area of the circle = 
∴ Area = 
Answer:
- 8° per hour
Step-by-step explanation:
Given that:
Station A = - 6°
Station B = 2°
Rate of temperature change = x° / hour ; which is the same at both stations
Temperature at station A 3 hours after the recording is the same as the temperature in station B 4 hours after the recording ;
Temperature change in Station A:
-6 + 3x
Temperature change in station B:
2 + 4x
Temperature change in A = temperature change in B
-6 + 3x = 2 + 4x
Collect like terms
3x - 4x = 2 + 6
- x = 8
x = - 8
Hence, the rate of temperature change x in both stations is - 8° per hour
Answer:
1r-1r
Step-by-step explanation:
srry if its wrong i took that class a couple months ago
Let a =70° and b= 10° (and a-b=70-10 =60)
We have the following trigonometric identity:
sin(a-b) = sin(a).cos(b)-sin(b).cos(a) OR:
sin(70-10) = sin70.cos10 - sin10.cos70
But sin(70-10) = sin(60) and we know that sin(60°) =(√3)/2
