Answer:
Step-by-step explanation:
A triangle is a polygon with three edges and three vertices and there are right triangle , obtuse triangles , acute triangles , isosceles triangles, equilateral triangle, and scalene triangles
Answer:
The area of the quarter circle is 
Step-by-step explanation:
we know that
The area of a quarter circle is equal to

we have

substitute the value


7+ 3x= -8
-8-7=-15
-15 divided by 3= -5
-5 is the answer
Answer: 21,400 mg
Step-by-step explanation: Multiply the mass value by 1000
.
Answer:
Step-by-step explanation:
The ratio of the number of fiction books is 9:4
the difference between the number of fiction and nonfictionn is 245
so if the number of fiction books = 9x
then the number of nonfiction books = 4x
then difference = 9x-4x = 5x
the difference is given 245
then 5x= 245
x=
=49
number of fiction books =49×9=441
number of nonfiction books =49×4=196
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