Answer:
Distribute 1.2 to 6.3 and -7x
Combine 3.5 and 7.56
suhtract 11.06 from both sides
Answer:
9.6x10^3
Step-by-step explanation:
9,600
find the highest number
9,600
^
bring the decimal to that number
9.600
count how many spaces it took to get to that number
9.600
^ ^ ^
3
so its 10 to the third power
Answer: 
Step-by-step explanation:
We know that:
: The number of vibrations per second of the nylon guitar string.
: Tension.
: The length of the string.
Since varies directly with the square root of the and inversely with , the equation has the following form:
Where "k" is the constant of variation.
Knowing that when 
and 
, 
, we can find the value of "k":
Finally, in order to find the tension when the length is 0.3 meters and the number of vibrations is 12, you need to substitute these values and the value of "k" into and solve for :
Answer:
the second one it is a function.
Answer:
using the pythagoras theorem
AB^2 + AC^2 = BC^2
12^2 + 5^2 = BC^2
144 + 25 = BC^2
169 = BC^2
13 = BC
NOW, since the triangles are similar BC = XZ
THEREFORE, XZ = 13 m
hope it helps !!!!
