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iren2701 [21]
3 years ago
8

These are the means and standard deviations for samples of heights from two kinds of trees. Tree A = Mean: 25ft = standard devia

tion: 5ft. Tree B = Mean: 60ft = Standard Deviation: 12ft
Mathematics
1 answer:
tatuchka [14]3 years ago
5 0

Answer:

mmmmmmm.............

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Solve the system by elimination (show all work)
Snezhnost [94]

Answer:

[1, 1, 0]

Step-by-step explanation:

{−2x + 2y + 3z = 0

{−2x - y + z = −3 ←

{2x + 3y + 3z = 5 ←

2y + 4z = 2 ↷

{−2x + 2y + 3z = 0 ←

{−2x - y + z = −3

{2x + 3y + 3z = 5 ←

5y + 6z = 5 ↷

{5y + 6z = 5

{2y + 4z = 2

−⅖[5y + 6z = 5]

{−2y - 2⅖z = −2 >> New Temporary Equation

{2y + 4z = 2

____________

1⅗z = 0

___ _

1⅗ 1⅗

z = 0 [Plug this back into both equations above to get the y-term of 1, then plugging both z-term and y-term into all three equations at the very top, will give you the x-term of 1]; 1 = y; 1 = x

I am joyous to assist you anytime.

8 0
3 years ago
A community park is shaped like a trapezoid with a height of 30 yd, a top base of 25 yd, and a bottom base of 33 yd. The park ha
mr Goodwill [35]
The area of the park without fountain is about 819.76 square yards.
5 0
3 years ago
Nancy has worn a blue skirt on 8 of the last 20 days.
Gala2k [10]

Answer:

it's just 8/20 so shade 8/20 of the circle

8 0
2 years ago
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Does someone mind helping me with this problem? Thank you!
lesya [120]

Answer:

the answer is 10,000

Step-by-step explanation:

i don't know

I think you do this

how many numbers times itself to the length of the code.

6 0
1 year ago
1. Solve this system by ELIMINATION and SUBSTITUTION in your note book. Make sure your work is neat and easy to read.
Andrews [41]

Answer:

(x,y) = (-219/9, -818/9)

Step-by-step explanation:

7 0
2 years ago
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