Answer:
True
Step-by-step explanation:
Control groups in experiments ar egroups that are separated from the others involved in which the independent variable being tested cannot influence the results. Control groups can also be separated into two groups which consist of positive nad negative.
Hope this Helps!
The length of the line segment BC is 31.2 units.
<h2>Given that</h2>
Triangle ABC is shown.
Angle ABC is a right angle.
An altitude is drawn from point B to point D on side AC to form a right angle.
The length of AD is 5 and the length of BD is 12.
<h3>We have to determine</h3>
What is the length of Line segment BC?
<h3>According to the question</h3>
The altitude of the triangle is given by;

Where x is DC and y is 5 units.
Then,
The length DC is.

Squaring on both sides

Considering right triangle BDC, use the Pythagorean theorem to find BC:

Hence, the length of the line segment BC is 31.2 units.
To know more about Pythagoras Theorem click the link given below.
brainly.com/question/26252222
Answer:
Step-by-step explanation:
a) D/280 = tan(90 - 6)
D = 280tan84 = 2,664 ft
b) D/280 = tan(90 - 16)
D = 280tan74 = 976 ft
ship speed = (2664 - 976) / 43 = 39.2 ft/s
Answer:
x+y+z=2 has no solutions. You can pick an arbitrary value for x4, and use that to calculate values for all the other variables so that all the equations will be satisfied. If you can set x4 to one of an infinity of real values, then you have an infinity of solutions
Answer:
9
Step-by-step explanation:
The GCF between 54 and 27 is nine.