The last time (before August 21, 2017) when the lower 48 states saw a total solar eclipse was 1979.
That was 2017 - 1979 = 38 years ago.
In scientific notation,
38 = 3.8 x 10¹
Answer: 3.8 x 10¹ years ago.
True)
.325 expressed as a percentage would be 32.5%
just remember 1.00 is 100%
Given that an object moves from the position +16 m to the position +47 m in 12 s. Now we need to find about what is its total displacement and what is its average velocity.
We know that displacement is the object's overall change in position.
So total displacement is given by:
Displacement = (+47) - (+16) = +31
Now velocity is given by ratio of displacement and time so final answer for velocity will be :
![Velocity=\frac{displacement}{time}=\frac{+31}{12}=2.583333](https://tex.z-dn.net/?f=Velocity%3D%5Cfrac%7Bdisplacement%7D%7Btime%7D%3D%5Cfrac%7B%2B31%7D%7B12%7D%3D2.583333)
Which is approx 2.6 m/s.
Answer:
The size of the scale model is 60 centimeters.
Step-by-step explanation:
Given that the length of a boat is 10.8 m, and Boris buys a scale model of the boat whose ratio is 1 to 18, to determine the length of the scale model of the boat in centimeters the following calculation must be performed:
1m = 100cm
10.8 m = (10.8 x 100) = 1080 cm
1080/18 = X
60 = X
Therefore, the size of the scale model is 60 centimeters.
Z = 140
X = 40
Y = 40
Explanation:
Z and the angle given (140 degrees) are vertical angles, and are therefore congruent
We know that x and y are vertical angles, so they are also congruent to each other
You know that together, the angles have to add up to 360
140 + 140 + x + y = 360
Another way of putting it:
360-280 = 80
Now, we have to divide by two since we need to find x AND y
80/2 = 40
Therefore, your answers for x and y are 40
To double check, you can add up the angles and see if they equal 360
140 + 140 + 40 + 40
280 + 80 = 360