<span>Wanda started walking along a path 27 seconds before Dave. Wanda walked at a constant rate of 3 feet per second. Dave walked along the same path at a constant rate of 4.5 feet per second. How long after Dave starts walking will he catch up with Wanda ?
***
let x=travel time of Dave
x+27=travel time of Wanda
speed*travel time=distance (same for both Wanda and dave)
..
4.5x=3(x+27)
4.5x=3x+81
1.5x=81
x=54
How long after Dave starts walking will he catch up with Wanda ? 54 sec</span>
Answer: P =38.7 in, A=63.7in^2
Step-by-step explanation: start by using the formula for area of a triangle: A =bh/2 and plug in values given for the larger triangle to find the height. 115=9h/2,. 230 =9h h= 25.556
Subtract from perimeter to get an estimate of the third side: 62-34.556=27.45
Realize now that the drawing is not to scale!
Use the dimensions of the larger triangle to and the proportion 6.7/9 = smaller / larger to find other dimensions of the smaller triangle. Add the sides to get perimeter. Multiply bh/2 to get the Area. Choose the answer that is closest to your calculations as the numbers are estimated. We cannot assume that this is a right triangle.
Answer:
11/36
Step-by-step explanation:
Here are the steps:
Step 1: Find a common denominator for both of the fractions
4/9 --> 27/36 (Multiply top and bottom by 4)
3/4 --> 16/36 (Multiply top and bottom by 9)
This is the smallest common denominator
Step 2: Subtract:
27/36 - 16/36 = 11/36
Soo...
x = 11/36
Hope this helps!
-jp524
Potential gravitational energy:
mgh
10kg • 10m/s^2 • 0.02 =
2 Joules
