The second one, fourth one, and sixth one are true.
Hope this helps!
Answer:
21 kilometers
Step-by-step explanation:
Let the height be . Then, the length of the base is . The formula for the area is of the triangle is given by base*height/2. Therefore, the area of the triangle is equal to , which is in turn equal to 441. Since must be positive, then , meaning that the height is kilometers.
Answer:
In the pic
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)
Answer:
frac{21x^6y^5}{14x^2y^9}
Factor the number =\frac{7\cdot \:3x^6y^5}{14x^2y^9}
Factor the number 14=7. 2 =\frac{7\cdot \:3x^6y^5}{7\cdot \:2x^2y^9}
Cancel\:the\:common\:factor:}\:7 =\frac{3x^6y^5}{2x^2y^9}
Step-by-step explanation: