Well how many students are there in the class??<span />
Answer:
4
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
1. You have that t<span>he largest doll is 12 inches tall. The height of each of the other dolls is 7/10 the height of the next larger doll. Therefore, you have:
We don't know the number of dolls, so:
x=12(7/10)^(n-1)
Where x is the height of the doll and n is the number of the doll
The answer is: </span>x=12(7/10)^(n-1)
Answer:
136.34 m to the nearest hundredth.
Step-by-step explanation:
The runners paths and the distance between them after 30 second form a triangle.
The side opposite the 85 degree angle is 180 m and one of the other sides is 130 m.
We need to find the third side.
We can use the Cosine Rule to do this:
If the third side is x m then:
180^2 = 130^2 + x^2 - 2*130x cos 85
180^2 = 130^2 + x^2 - 260 * x * 0.08716
180^2 = 130^2 + x^2 - 22.6616 x
x^2 - 22.6616 x - 15500 = 0
x = [22.6616 +/- sqrt ((-22.6616)^2 - 4 * -15500) ] / 2
x= 136.34 m.
