45x +40(x+0.5) =270
45x +40x +20 =270
85x = 250
x = 250/85 = 2.94
45 * 2.94 = 132.3 miles
40*(2.94 +0.5) = 40*3.44 = 137.6
2.94 hours
Answer:
A
Step-by-step explanation:
To find the value you can just find 12% of each number (trial and error), until one of them gives you 90 as an answer:
A) 750
750 * 0.12 = 90
B) 1080
1080 * 0.12 = 129.6
C) 360
360 * 0.12 = 43.2
D) 1168
1168 * 0.12 = 140.16
This tells you that 90 is 12% of the 750, and that is why it is your answer
I hope this helps!
Answer:
36π
Step-by-step explanation:
The formula for the area of a circle is π times radius squared.
The radius in this case is 6, so squaring it gets us 36.
Multiplying this by π gets 36π.
Answer:
122.24 is the approximate answer
Step-by-step explanation:
The Logo is made up of 2 semicircles and 1 rectangle
Two semicircles make one circle
The formula for a circle is π
The radius (r) is 4 because the diameter is 8
so you plug it in and get 16π
The approximate value of π is 3.14
16 times 3.14 is 50.24
so to calculate the area of the whole logo just add
Answer:
1. In triangle ABC,
AC = a = 10, BC =b= 7 and ∠ C = 90°
By cosine law,




Now, by the law of sine,



2. In triangle ABC,
∠B = 30°, AB=c=10 and ∠C = 90°
∠A = 180°-(30+90)°=60°

⇒ 
By Pythagoras,

⇒ 