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postnew [5]
3 years ago
12

Need help with 2 3 and 4, show work if possible

Mathematics
1 answer:
marin [14]3 years ago
4 0
You're in luck i'm feeling the mood to do your homework :)


2) The table would change, the number of hydrogen and oxygen atoms would be the same ALWAYS.
3) 15 Hydrogen Atoms and 5 Nitrogen Atoms (5*3=15, 5*1=5)
4) Not so great with System of Equations, I feel like there is a value missing. It'd be much easier if I was given how many people went.
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Maria needs to reach a window that is eight feet above the ground. When she placed a ladder so that it reached the bottom of the
mr_godi [17]

Answer:

10 feet

Step-by-step explanation:

Given that the distance to be reached is 8 feet above ground and she she placed a ladder so that it reached the bottom of the window, the base of the ladder was 6 feet from the house, the length of the ladder considered with the other lengths forms a right angled triangle.

The length of the ladder represents the hypotenuse side hence using pythagoras theorem

F^2 = 8^2 + 6^2

where F is the length of the ladder in feet

F^2 = 64 + 36

= 100

find the root of both sides

F = 10 feet

The ladder is 10 feet long

5 0
3 years ago
6 is 3% of what number?
Aleks04 [339]

<span>✡ Answer: 200 </span><span>✡

- - Solve:

✡ First we need to find the formula to solve:
\frac{3}{100} * x=6


✡ Now:
x is equal to: \frac{100*6}{3}

</span>
<span>✡Now we are going to multiply 100*2 to get our answer.

- - 100*2=200 </span>


✡Hope this helps!<span>✡</span>







6 0
3 years ago
Read 2 more answers
The sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that is 8 
julsineya [31]
Good afternoon, 

First side= 8cm 
Third side= x
Second side= 2x-4

We know that the sume of the lenghts of any two sides must be greater than the third side, so:

Second \,\,\,\,side+Third\,\,\,\,side>First\,\,\,\,side \\ 2x-4 + x >8 \\ 3x>12 \\ x>4&#10;

<span>Answer: Third side= x                        ;         where: x>4 or (4,+infinity)
                Second side= 2x-4              ;        </span><span> where: x>4 or (4,+infinity)</span>
3 0
3 years ago
The sum of an unknown and eight is twenty. What is the unknown?<br>​
Zarrin [17]

indicates subtraction

20 - 8 = 12

4 0
2 years ago
Read 2 more answers
Abbi has $400 in $5 bills. If she has 38 bills, how many of them are $20?
Sergio039 [100]
F=5 dollar bills
t=twent dollar bills

38 total bills
f+t=38

400 in bills
400=5f+20t

we have
f+t=38
5f+20t=400
multipy first equation by -5 and add to second equation

-5f-5t=-190
5f+20t=400 +
0f+15t=210

15t=210

divide both sides by 15
t=14

subsitute
t+f=38
15+f=38
f=23


23 five dolar bills
15 twenty dollar bills
3 0
3 years ago
Read 2 more answers
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