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rodikova [14]
2 years ago
6

What is the total number of atoms in ammonium hydroxide, nh4oh ? 2 4 7 8

Mathematics
1 answer:
vladimir2022 [97]2 years ago
7 0

Answer:

7 total atoms.

Step-by-step explanation:

There's nothing written for N, so we assume there is one atom. There is 4 written for H, plus the other H at the end, making 5 hydrogen atoms. There is nothing written for O, so we assume there is one atom. 1+5+1=7 total

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The square of a number is always larger than the number. it's a true or false question
enot [183]

Answer:

True except when its 0 or 1 squared in which case would be false

Step-by-step explanation:

0^2=0

1^2=1

4 0
4 years ago
If 3 pieces of candy costs $2.10 how much would four pieces cost?
netineya [11]
$3 

Hope this helps. 

Each Piece costs .07 cents. Found this out by dividing 2.10 by 3. Then add .07 to 2.10 :) 
6 0
4 years ago
Read 2 more answers
The mean incubation time for a type of fertilized egg kept at 100.2100.2â°f is 2323 days. suppose that the incubation times are
zlopas [31]

To solve this problem, what we have to do is to calculate for the z scores of each condition then find the probability using the standard normal probability tables for z.

The formula for z score is:

z = (x – u) / s

where,

x = sample value

u = sample mean = 23 days

s = standard deviation = 1 day

 

A. P when x < 21 days

z = (21 – 23) / 1

z = -2

Using the table,

P = 0.0228

Therefore there is a 2.28% probability that the hatching period is less than 21 days.

 

B. P when 23 ≥ x ≥ 22

<span>z (x=22) = (22 – 23)  / 1 = -1</span>

P (z=-1) = 0.1587

 

z (x=23) = (23 – 23) / 1 = 0

P (z=0) = 0.5

 

P = 0.5 - 0.1587 = 0.3413

Therefore there is a 34.13% probability that the hatching period is between 22 and 23 days.

 

C. P when x > 25

z = (25 – 23) / 1

z = 2

P = 0.9772

This is not yet the answer since this probability refers to the left of z. Therefore the correct probability is:

P true = 1 – 0.9772

P true = 0.0228

<span>Therefore there is a 2.28% probability that the hatching period is more than 25 days.</span>

8 0
3 years ago
Incase you can’t see the picture, it says “Explain how to solve the following equation and check for extraneous solutions: x= sq
Alex_Xolod [135]

Answer:

x=3

Step-by-step explanation: too much math to put here

8 0
3 years ago
Read 2 more answers
Katy invests $18,000 at 14% simple interest for 1 year. How much is in the account at the end of the 1 year period? Answer: $___
Nitella [24]

Answer:

$20,520 at the end of the year

Step-by-step explanation:

A = P(1 + rt)

   A = Total Accrued Amount (principal + interest)

   P = Principal Amount

   I = Interest Amount

   r = Rate of Interest per year in decimal; r = R/100

   R = Rate of Interest per year as a percent; R = r * 100

   t = Time Period involved in months or years

P = $18,000

r = .14

t = 1

A = 18,000 (1+ ( .14 * 1 ) )

A = 18,000 (1 +.14)

A = 18,000 (1.14)

A = 20,520

$20,520 at the end of the year

8 0
3 years ago
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