the mass of a dust particle is 0.000000000735 kilograms. What is the mass written in scientific notation?
2 answers:
Answer:
Option D -
Step-by-step explanation:
Given : The mass of a dust particle is 0.000000000735 kilograms.
To find : What is the mass written in scientific notation?
Solution :
Scientific notation is writing a number into smaller or larger number.
Mostly scientific number is in a number before decimal and then the multiple of 10 to the powers.
So,
The mass in scientific notation is kg.
Therefore, Option D is correct.
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Answer:
C
Step-by-step explanation:
Note that <em>x</em> is opposite to the given angle and we are also given the hypotenuse.
Since we have an angle and the side opposite to it and the hypotenuse, we can use the sine ratio. Recall that:
The opposite side is <em>x</em>, the hypotenuse is 15, and the angle is 53. Substitute:
Solve for <em>x: </em>
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Use a calculator (make sure you're in Degrees Mode!). Hence:
Our answer is C.
Consider the coordinate plane:
1. The origin is the point where Sharon and Jacob started - (0,0).
2. North - positive y-direction, south - negetive y-direction.
3. East - positive x-direction, west - negative x-direction.
Then,
- if Jacob walked 3 m north and then 4 m west, the point where he is now has coordinates (-4,3);
- if Sharon walked 5 m south and 12 m east, the point where she is now has coordinates (12,-5).
The distance between two points with coordinates and
can be calculated using formula
Therefore, the distance between Jacob and Sharon is