Answer:
.2427
Step-by-step explanation:
If you don't need to show your work:
TI84 calculator:[2nd][vars][normalcdf][lower:2000][upper:2500][μ:1800][σ:300}[enter][enter]
B=14H+2
B+H=122 so 14H+2+H=122 or 15H=120 or H=8 ft.
The head was 8 ft and the body 114 ft (do the difference 122-8).
Writing and solving an equation of ratios is the way to go here. See if you can figure out why the following is correct:
x+3 x
----- = -------
12 x+3
Then (x+3)^2 = 12x, and x^2 + 6x + 9 = 12x, so that x^2 - 6x + 9 = 0
This is the square of (x - 3). Thus, x-3 = 0, and x = 3.
The value of x is 3.
Answer: 384 cm²
Step-by-step explanation:
Took test
Answer: (2,-1).
Step-by-step explanation:
The given system of equations is
For , table of values is
x : 0 1 2
y : 2 0.5 -1
For , table of values is
x : -1 2 5
y : -2 -1 0
Plot these points on a coordinate plane and connect them be straight lines as shown below.
Form the graph it is clear that the lines intersect each other at (2,-1).
Therefore, the solution of given system of equations is (2,-1).