Answer with explanation:
Given: In △ABC with side lengths a, b, and c, and height h, a vertical line extends from angle B perpendicular to side b.
To prove:→ Area(ΔABC)
Proof:
In △ABC with side lengths a, b, and c, and height h ,
Area of ΔABC
Let perpendicular from angle , B on the side AC cuts AC at M.
Definition of sine
Area of Triangle ΔABC
-----Using Substitution Property,that is , h=a sin C
→Area = 1/2 b h
Y is 7 and X is 1
See the pattern?
4x7=28
5x7=35
6x7=42
7x7=49 and at the top is 1x7=7
Answer:
x=84
Step-by-step explanation:
We know that the angles in a triangle are equal to 180.
39+57+x=180
96+x=180
x=84
Answer:
13.5 mg
Step-by-step explanation:
Here given Cobalt isotope has half life of 5.3 years.
Initial amount is 50 mg.
Given time(10 years) is roughly equals to two half life.
So, after 5.3 year 25 mg of isotope will left further in next half life only around 12.5 mg remains.
Among options 13.5 mg is the best possible
Because + and - make - which makes you left with 3-5 which equals to -2 because it gets negative.
