Answer:
-4
Step-by-step explanation:
-1+(-3)
golden rules in math
+*- = -
+*+=+
-*-=+
-*+=-
hence -1+(-3)= -1-3=- 4
Answer:
I'd say 7ft
Step-by-step explanation:
a square has equivalent sides so just divide 49.
<em>please correct me if im wrong.</em>
The answer:
the complement of the question proposed one of the choices given beneath:
a) 58.8
b) 53.0
c) 29.4
d) 26.5
as we observe at the figure, AOB an isosceles triangle, and OCB is a right triangle
consider OCB
OC =9, OB= radius = 28
the problem is how to find the length of CA, for that C is a midpoint of segment AB, so AC=BC
BC can be found by using pythagorean theorem
OB²= OC² + CB², this implies CB² = OB² - OC²
CB² = 28² - 9² = 784 - 81=703, therefore CB= sqrt (703)=26.51
CB=26.51, since CB= AC, so AC=CB= 26.51
finally the <span>the length of AB is AB = 2 x CB = 2x AC= 2x 26.51= 53.0
</span>
the answer is b) 53.0
