Answer: to minimize the effects of variables other than the independent variable (i.e. confounding variables)
Step-by-step explanation:
A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable (i.e. confounding variables). This increases the reliability of the results, often through a comparison between control measurements and the other measurements.
Adding zero would do nothing to it.
D is your answer.
Hope this helps!
STSN
Answer:
x = -27
Step-by-step explanation:
-x/3 = 9
Multiply each side by -3
x/-3 * -3 = 9*-3
x = -27
Answer:
The answer to your question is p = 27.7 q = 29
Step-by-step explanation:
Process
1.- Calculate the value of all the angles of the triangle
The angle of 50° and the one to the right are supplementary
x + 50 = 180
x = 130°
- The sum of the internal angles in a triangle equals 180°
30° + y + 130° = 180
y = 180 - 130 - 30
y = 180 - 160
y = 20°
- The angle of the right triangle
50 + 90 + z = 180
z = 180 - 90 - 50
z = 40°
If sum up the superior angles 20 + 40 = 60°, then the biggest triangle is a 30-60-90
2.- Calculate q using the trigonometric function tangent
tan Ф = q / 55
solve for q
q = 55 tan 30
q = 28.9 ≈ 29
3.- Calculate the hypotenuse of the biggest triangle
h² = 55² + 29²
h² = 3866
h = 62,12
4.- Use law of sines to find p

solve for p
p = 
p = 27.74
Well, for this question we can start off by making an equation
(6.4)2
This problem is quite simple actually so we will just multiply 6.4*2
6.4*2=12.8 miles