Answer:
Yes both triangles are congruent thanks to SAS
we know XL and BC are congruent and AB and QX are congruent and the degrees are also congruent, since the angle is between the sides it's Side-Angle-Side(SAS)
Answer:
Step-by-step explanation:
That is not a parallelogram. It has more than four sides.
Area of the white part of the figure is 4×20 = 80 m²
If you expand the figure to include the white part, its area is 9×23 = 207 m².
Green area = 207-80 = 127 m²
Answer
The triangle is scalene triangle
Answer:
<em>For each horizontal foot, the roller coaster changes </em><em>6 feet</em><em> of height.</em>
Step-by-step explanation:
Across a horizontal distance of 25 feet, a roller coaster has a steep drop.
So the run is 25 feet.
The height of the roller coaster at the bottom of the drop is -150 feet. (Negative sign is given because it is measured from the top to bottom)
So the rise is 150 feet.
The slope of the roller coaster is,
Slope of 6 means, for 1 unit of run, the object has a rise of 6 units.
Therefore, for each horizontal foot, the roller coaster changes 6 feet of height.
For half lives
A=final amount
P=present amount
t=time in some units (this case it is days)
h=half life in days in th is case
so
given
we want 5% left
so A=5% of P or 5/100 of P or 1/20 of P or 0.05P
h=4.6
so
divide bth sides by P
take ln of both sides
divide both sides by
times both sides by 4.6
use your calculator
19.889t
so after about 20 days