Answer:
divide both side of inequality by 4 but don't flip the symbol
Answer:
Answer B
Step-by-step explanation:
Write out f(x) and g(x) in a column; we will subtract g(x) from f(x):
f(x) = x^2 - 9 or f(x) = x^2 - 9
-g(x) = -(2 - x) or -g(x) = +x -2
---------------------------------
f(x) - g(x) = x^2 + x - 11 (Answer B)
Use the next formula to find the margin or error:
z is the critical value (For a 95% confidence level the z-score is 1.95998)
σ is the standard deviation
n is the sample size
<h2>Then the margin of error is: 6.6639</h2>
Answer:
$4.69
Step-by-step explanation:
<em>$</em><em>1.62</em><em>/</em><em>lb</em><em> </em><em>×</em><em> </em><em>2.5</em><em> </em><em>=</em><em> </em><em>$</em><em>4.05</em>
<em>$</em><em>0.48</em><em>/</em><em>lb</em><em> </em><em>×</em><em> </em><em>1</em><em> </em><em>1</em><em>/</em><em>3</em><em> </em><em>=</em><em> </em><em>$</em><em>0.64</em>
<em>$</em><em>4.05</em><em> </em><em>+</em><em> </em><em>$</em><em>0.64</em><em> </em><em>=</em><em> </em><em>$</em><em>4.69</em>
Write and solve an equation of ratios:
9 ft 22 ft
------- = -----------
h 99 ft
This is appropriate because h is greater than 9 ft.
cross-multiplying, we get
9(99) ft^2 = 22*h*ft
Then h =40.5 ft (which is the height of the building)
