A boat was sailing for 4 hours and covered 224 miles. A jet is ten times as fast as the boat. Find the jet’s speed.
2 answers:
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Step-by-step explanation:
Formula = A=2(wl+hl+hw)
- L = 4
- W = 2
- H = 2.5
=> A=2(wl+hl+hw)
=> A = 2((2)(4)+(2.5)(4) + (2.5)(2))
=> A = 2(8 + 10 + 5)
=> A = 2(23)
=> A = 46
Surface area = 46
Answer:
see attached
Step-by-step explanation:
A graphing calculator can show you the graph right away. Or you can plot it by hand.
Since both inequalities do <em>not</em> include the "or equal to" case, the lines they represent (y=-x-1, y=x+4) will be dotted lines.
Of course, you can read the y-intercept from the equation. (It is the constant, the value of y when x=0.) The slope is the coefficient of x, so is -1 for the line with the negative y-intercept, and +1 for the line with the positive y-intercept.
The solution to each inequality is shaded. For y < ( ), the shading is below the dotted line. For y > ( ), the shading is above the dotted line. Then the solution to both inequalities is the doubly-shaded area.
