Answer:
Step-by-step explanation:
We use trig to answer these questions:
sin x = opposite side of a triangle / hypotenuse
cos x = adjacent side / hypotenuse
Construct a right triangle with hypotenuse 4 m and lower angle 68 degrees.
The height of the top of the ladder is then defined by:
sin 68 degrees = height / 4 m, which yields (4 m)(sin 68) = height =
3.71 m
and the distance of the bottom of the ladder from the wall as follows:
cos 68 degrees = horizontal distance / hypotenuse =
1.50 m
Answer:
$25.5
Step-by-step explanation:
12.75 divided into 3 is 4.25 and then 4.25 times 6 gives you 25.5
Answer:
its A
Step-by-step explanation:
just took the test
Answer:
here's the verified answer
Step-by-step explanation:
please mark me brainliest
Answer:
0.495
Explanation:
Given the expression:
![0.55-1.645\sqrt[]{\frac{0.55(1-0.55)}{220}}](https://tex.z-dn.net/?f=0.55-1.645%5Csqrt%5B%5D%7B%5Cfrac%7B0.55%281-0.55%29%7D%7B220%7D%7D)
Begin by simplifying the expression under the radical (square root) sign.
![\begin{gathered} =0.55-1.645\sqrt[]{\frac{0.55(0.45)}{220}} \\ =0.55-1.645\sqrt[]{\frac{0.2475}{220}} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%3D0.55-1.645%5Csqrt%5B%5D%7B%5Cfrac%7B0.55%280.45%29%7D%7B220%7D%7D%20%5C%5C%20%3D0.55-1.645%5Csqrt%5B%5D%7B%5Cfrac%7B0.2475%7D%7B220%7D%7D%20%5Cend%7Bgathered%7D)
Using a calculator, we evaluate the radical:
![\begin{gathered} =0.55-1.645\sqrt[]{0.001125} \\ =0.494825 \\ \approx0.495\text{ (to 3 decimal places)} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%3D0.55-1.645%5Csqrt%5B%5D%7B0.001125%7D%20%5C%5C%20%3D0.494825%20%5C%5C%20%5Capprox0.495%5Ctext%7B%20%28to%203%20decimal%20places%29%7D%20%5Cend%7Bgathered%7D)
