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BartSMP [9]
3 years ago
9

Which equation is an identity?

Mathematics
1 answer:
Alecsey [184]3 years ago
6 0

Answer:

D

Step-by-step explanation:

A and B are not, and C doesnt work so D

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Roberta grows pea plants, some in shade and some in sun. She picks 8 plants of each type at random and records the heights. Shad
natita [175]

Answer: 2.6

Step-by-step explanation:

Step 1: Calculate the mean of Shade's plant heights.

= 7+12+12+8+9+8+8+8/8

= 72/8

=9

Step 2: Calculate the range of Shade's plant heights. Range is highest minus lowest number. This will be:

12 - 7 = 5

Step 3: Calculate the mean of Sun plant heights.

19+24+20+23+24+23+23+20/8

= 176/8

= 22

Step 4: Find the range of Sun plants height.

= 24 - 19 = 5

Step 5: Find the difference of means

= 22 - 9

= 13

Step 6: Divide the difference of means by the range.

= 13 ÷ 5

= 2.6

8 0
3 years ago
What is the solution to the following system?
irakobra [83]

Answer:

None?

Step-by-step explanation:

After using the 4 answers using what I think is (x,y,z) none of the answers were true.

8 0
2 years ago
Please help me I beg no one would help me <br><br>Please do all
GarryVolchara [31]

13<em> count one number </em><em>add one </em>

3 0
3 years ago
What is the range of f(x) = 4^x?
Oxana [17]

Answer: A because it goes from (0,infinity) so all positive real numbers

5 0
3 years ago
IT IS 2AM AND ITS DUE IN LIKE AN HOUR PLEASE HELP
Andreas93 [3]
13) As they’ve given the zeros, you can use those to create factors. Since the zeros are x=-1, x=-3, and x=4, by making the right side 0 in each equation, you get the factors (x+1), (x+3), and (x-4). Then, you can multiply those factors using box method or FOIL or whichever method you prefer. By multiplying (x+1) and (x+3), I got x^2+4x+3. Then, I multiplied that by (x-4) to get x^3-13x-12, which is your final answer.

14) Using the same steps in 13, I found the factors. As the zeros are x=-6 and x=0, I got the factors (x) and (x+6). Then, I multiplied them and got x^2+6x, which is the answer.

15) x=1, x=1, x=2. These become the factors (x-1), (x-1), and (x-2). Then, by multiplying (x-1) and (x-1) you get x^2-2x+1. Multiply that by (x-2) to get your final answer, x^3-4x^2+5x-2.

16) Zeros are x=-1, x=5, and x=-2. You get the factors (x+1), (x-5), and (x+2). Multiply (x+1) and (x-5) to get x^2-4x-5. Multiply that by the other factor, (x+2), to get your final answer, x^3-2x^2-13x-10.
8 0
2 years ago
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