Whatever was being measured is lower for the second year than it was for the first.
-0.05 is larger. Since they're negative, you're going by which is closer to 0 rather than farther. -0.05 is closer to 0 on a number line, so it's larger than -0.25.
Answer:
<em>a) She started walking back</em>
<em>b) 0.13 km/min</em>
Step-by-step explanation:
The graph shows the distance traveled by Jo. She starts her journey (t=0) at a distance of 0 Km since the graph passes through the origin (0,0).
a) Ten minutes later she is at a distance of 1 km from the starting point and then the distance starts to drop. This means that at t=10 minutes, she started walking back.
b) To calculate the speed for the last 30 minutes of journey, we find the slope of the line. Select the points (30,0) and (60,4).
If a given line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:
![\displaystyle m=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
Substituting:
![\displaystyle v=\frac{4-0}{60-30}=\frac{4}{30}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20v%3D%5Cfrac%7B4-0%7D%7B60-30%7D%3D%5Cfrac%7B4%7D%7B30%7D)
v=0.13 km/min
All this is saying is: "Solve this equation for 'r': V = π r² h ."
You should be able to do that.
<span>V = π r² h
Divide each side by 'π': V / π = r² h
Divide each side by 'h': V / π h = r²
Square root each side: r = √ ( V / π h) .</span>
The relationship between the radian measure of an angle and a circle's radus and circumference can be discribed as follow. The main formula is
C= 2x R x Pi, Pi is an angle measured in radian, R is the radius and C is the circumference, so C is 2 times of the product of the radian measure of an angle and the radius.