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Gala2k [10]
3 years ago
5

Trace metals in drinking water affect the flavor and an unusually high concentration can pose a health hazard. We obtain the fol

lowing data for 9 glasses of water. Each glass contained the same amount of water. We look at the zinc concentration (mg/L) in bottom water and the zinc concentration in surface water for each glass. It is fine to round any standard deviations to 2 decimals. Glass 1 2 3 4 5 6 7 8 9 Bottom Water .48 .32 .62 .58 .76 .77 .70 .64 .52 Surface Water .42 .24 .39 .41 .61 .61 .63 .52 .41

Mathematics
1 answer:
Vitek1552 [10]3 years ago
5 0

Answer:

Please see attachment

Step-by-step explanation:

Please see attachment

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Q(a+1) - 2q(a) if q(x) = x²+3x+4​
siniylev [52]

q(x) =  {x}^{2} + 3x + 4

_________________________________

Step(1)

To find q(a) we just need to put a instead of x in q(x) function.

Let's do it...

q(a) =  {a}^{2} + 3a + 4

Multiply sides by -2 :

- 2q(a) =  - 2( {a}^{2} + 3a + 4)

- 2q(a) =  - 2 {a}^{2} - 6a - 8

_________________________________

Step (2)

To find q(a+1) we just need to put a+1 instead of x in q(x) function.

Let's do it...

q(a + 1) =  ({a + 1})^{2} + 3(a + 1) + 4 \\

q(a + 1) =  {a}^{2} + 2a + 1 + 3a + 3 + 4 \\

q(a + 1) =  {a}^{2} + 5a + 8

_________________________________

Step (3)

q(a + 1) - 2q(a) =

{a}^{2} + 5a + 8 - 2 {a}^{2} - 6a - 8 =  \\

-  {a}^{2} - a  =  - a(a + 1)

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

8 0
4 years ago
What are factorials? And how do you do them in fractions like
Ket [755]
I think that it is 54
4 0
3 years ago
Which table shows no correlation?
Veseljchak [2.6K]

Instead of adding 6 three times, you can multiply 6 by 3 and get 18, the same answer.

Similarly,

6 + 6 + 6 + 6 + 6 + 6 + 6 = 6 × 7 = 42

3 0
2 years ago
Triangle PQR has vertices at the following coordinates : P(0,1) Q(3,2) R(5,-4) . Determine wether or not triangle PQR is a right
lord [1]
Here is my answer. Hope this help.

8 0
3 years ago
G(1) = 4<br> g(n) = g(n-1)-(-3)<br> g(3)
Licemer1 [7]

Answer:

2

g

n

+

3

+

3

g

Step-by-step explanation:

8 0
3 years ago
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