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
mestny [16]
3 years ago
7

The age of trees in a forest is known to be approximately normal with an average age of 40 years and a standard deviation of 10

years. What is the standardized score for a tree that is 34 years old?

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0

Answer: D. -0.6

Step-by-step explanation:

Z score formula= x-mean/ SD

34-40/10= -3/5= -0.6

You might be interested in
If (-5x^5) (a) = 25x^7 + 100x^5, find a
sweet-ann [11.9K]
(-5x^5)(a) = 25x^7 + 100x^5
<u>+5x^5                         +5x^5</u>
             a = 25x^7

4 0
3 years ago
Please show your workings
GarryVolchara [31]
13% of 4,760,000 = 618,800
4,760,000 + 618,800 = 5,378,800
Hope it helps!
6 0
3 years ago
A) Write the following in standard form and find A, B and C
alex41 [277]

Answer:

  • a)  2x -y = -5; A=2, B=-1, C=-5
  • b)  y = 2x +5

Step-by-step explanation:

a) Standard Form is ...

  Ax + By = C

where A > 0 and A, B, C are mutually prime.

To get that form, we can add 2x-5 to both sides of the equation:

  (2x -5) -2x = (2x -5) -y +5

  -5 = 2x -y

Then we can swap sides of the equal sign:

  2x -y = -5 . . . . . . standard form

Matching this to the generic standard form equation, we find ...

  A = 2

  B = -1

  C = -5

__

b) We can solve for y by adding 2x+y to both sides of the equation:

  (2x +y) -2x = (2x +y) -y +5

  y = 2x +5 . . . . . . slope-intercept form

5 0
3 years ago
Concert tickets cost $15 for general admission, but only $9 with a student ID. Ticket sales total $450. Write and graph an equat
aliina [53]

The equation that models the situation is 15x + 9y = 450

The x-intercept is (30, 0) and the y-intercept is (0, 50)

Given the following parameters:

  • Cost of concert tickets for general admission= $15
  • Cost of a ticket for those with student ID = $9

Given that the total sales is $450, the equation that models this situation will be expressed as:

  • 15x + 9y = 450

where:

x is the those that admitted generally

y are those with student ID

<u />

<u>Get the x-intercept.</u>

This is a point where the y-axis is zero

15x + 9y = 450

15x + 9(0) = 450

15x = 450

x = 450/15

x = 30

Thee x-intercept is (30, 0)

<u>Get the y-intercept.</u>

This is a point where the x-axis is zero

15(0) + 9y = 450

0 + 9y = 450

9y = 450

y = 450/9

x = 50

The y-intercept is (0, 50)

Learn more on intercepts here: brainly.com/question/24212383

7 0
2 years ago
Quiz 9.1 &amp; 9.2
Ray Of Light [21]

Answer:....

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Solve sin θ +1 = cos 2 θ on the interval 0 ≤ θ &lt;2π
    6·1 answer
  • Answer to this question please?
    14·2 answers
  • In a group of 100 adults, 70 say they are most likely to do spring houseclean-ing in March, April, or May. Of these 70, the numb
    13·1 answer
  • Decimal Operations:<br> (Round to the nearest thousandth.) <br> 0/0.75
    8·1 answer
  • A jar contains 6 yellow marbles, 4 black marbles, and 2 purple marbles. Two marbles are picked at random, without replacement. W
    8·1 answer
  • Help me fast please ASAP
    9·2 answers
  • Select the correct pairs of triangles.
    9·1 answer
  • Select the correct comparison Set A Set B?
    13·2 answers
  • On what interval is the function increasing.
    14·1 answer
  • What is the value of the missing angle?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!