Answer:
The length of side x is 
Step-by-step explanation:
Pythagorean Theorem:
In a right triangle, with sides a and b, and hypothenuse h, we have that:

In this question:
The vertical line on the sides means that both are equal, that is, measuring x, so
.
Hypothenuse is the square root of 12. So 





The length of side x is 
15/3 = 35/x
Cross multiply.
15x=105
105/15=x
x=7
Abe have to take 7 weeks of school this quarter.
Answer:
B
Step-by-step explanation:
perimeter is the sum of all sides. it's the distance around the figure.
Answer:
yes
Step-by-step explanation:
because side a (4) and side b (5) added together are greater or equal to side c (8)