1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
melisa1 [442]
3 years ago
8

Consider the experimental situation described below. Ability to grow in shade may help pines in the dry forests of Arizona resis

t drought. How well do these pines grow in shade? Investigators planted pine seedlings in a greenhouse in either full light or light reduced to 5% of normal by shade cloth. At the end of the study, they dried the young trees and weighed them. Identify the experimental unit(s) or subject(s). (Select all that apply.)
Mathematics
1 answer:
svetoff [14.1K]3 years ago
5 0

Answer:

Pine tree seedlings

Step-by-step explanation:

An experimental unit refers to the subject or factor under investigation. The subject or factor is subjected to different treatments in the course of the study. In the case of the experimental situation described above, the pine tree seedlings are the experimental units that actually received the treatments.

The treatments included being subjected to full or reduced light in the greenhouse. The response of the seedlings to these treatments would determine the outcome of the study.

You might be interested in
Which of the following graphs shows a parabola with a vertex of (1,-9) and solutions of (-2,0) and (4,0)?
Mariulka [41]

Answer:

Hello,

Step-by-step explanation:

Roots are -2 and 4

y=k*(x+2)(x-4)

Vertex = (1,-9) is a point of the parabola

-9=k*(1+2)(1-4) ==> k=1

Equation of the parabola is y=(x+2)(x-4)

But you don' t have given the graphs !!!!

3 0
3 years ago
Willie changes the quadratic function f(x)=x2?6x+14 to vertex form f(x)=a(x?h)2+k. If Willie does this correctly, what is the va
andrew11 [14]

Answer:

The value of k is 5.

Step-by-step explanation:

Since we know we can convert function's quadratic form to vertex form by completing the square.

f(x)=x2?6x+14

We will add and subtract 9 to our equation in order to complete the square.

1(x^{2} ?6x+9)-9+14

Upon completing the square and combining like terms we will get,

1(x?3)^{2} +5

Upon comparing Willie's vertex form with our expression we can see that k is 5.

Therefore, the value of k is 5.

8 0
4 years ago
what do the following two equations represent? please help 4x+2y= 10 4x-2y= -10 a) the same line b) distance parallel lines c) p
sleet_krkn [62]

Answer:

  d)  intersecting, but not perpendicular lines

Step-by-step explanation:

Changing the sign of one of the variable terms causes the line to be reflected across one of the axes. The slope is the opposite of what it was. Since the original slope was not 1 or -1, the resulting line is not perpendicular to it. Lines with different slopes will be intersecting.

The two lines are intersecting, but not perpendicular.

8 0
3 years ago
Sergio passes by a bike store on Monday and sees his dream bike in the window. It cost 120 . He passes by on Wednesday and is th
insens350 [35]

Answer:

90

Step-by-step explanation:

120 - (120/4)

120 - 30 = 90

3 0
3 years ago
Is a – b a positive number or a negative number? How do you know?
Ganezh [65]

Answer:

A positive number.

Any negative subtracted from a positive will always be positive.

8 0
3 years ago
Read 2 more answers
Other questions:
  • A certain forest covers an area of 4300 km2 . suppose that each year this area decreases by 3.25% . what will the area be after
    15·1 answer
  • AP Calc pls help<br> Find the area of the region bounded by the graphs of y = x2 − 4x and y = x − 4.
    6·1 answer
  • The sum of (2a + ab + 2b) + (4a2 - 3ab + 9)
    5·1 answer
  • ?????????????????????????????????????????????????????????????????????
    13·2 answers
  • Simplify: 1/4-1/5+ -3/4+1/8 A23/40 B-5/8 C 1/20 D 3/16
    9·2 answers
  • I need help on this one please​
    11·1 answer
  • Vern has just opened a flower shop. Because of the startup costs, for the next month his net earnings for each bouquet are −$2.5
    9·1 answer
  • 3(y+2/5)=-1/5 What’s y? please help asap!!
    7·1 answer
  • A bicycle is originally priced at $60. The online retailer gives a discount and the bicycle is now priced at $42. Enter the perc
    8·2 answers
  • Slope of the line (0,7), (4,4)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!