Answer:
Number of carbon atoms present in the sample are 391.
Step-by-step explanation:
We are given that,
Ratio of carbon to hydrogen atoms = 1 : 4
It is given that a sample of methane consists of 1564 hydrogen atoms.
Let the carbon atoms in the sample = x
So, we have the relation,
i.e. 
i.e. 
i.e. x= 391
Hence, the number of carbon atoms present in the sample are 391.
The statements are true about the algebra tiles to model x + 2 are as follows;
The variable is modeled by an orange x tile.
+ 2 is modeled by 2 orange + tiles.
<h3>
What are algerbra tiles?</h3>
Algebra tiles are square and rectangle shaped tiles or tiles that represent numbers and variables.
Given
Use the algebra tiles to model x + 2.
The statements are true about the algebra tiles to model x + 2 are as follows;
- The variable is modeled by an orange x tile.
- + 2 is modeled by 2 orange + tiles.
To know more about algerbra tiles click the link given below.
brainly.com/question/81876
Answer:
<h2>
8 years</h2>
Step-by-step explanation:
Given,
Principal (P) = £ 30000
Simple Interest ( I ) = £ 28800
Rate (R) = 12%
Time (t) = ?
Now,
Hence, It would take 8 years.
Hope this helps...
Good luck on your assignment...
Answer:
z = 5
x = 0
x = 1
Step-by-step explanation:
(z - 5)x^2 - (z - 5)x = 0 Take out z - 5 as a common factor
(z - 5)(x^2 - x) Take out x as a common factor
(z - 5)(x)(x - 1) Any one of these could equal 0. There are 3 solutons.
z - 5 = 0 Add 5 to both sides
z - 5 + 5 = 0 + 5
z = 5
===============
x = 0
===============
x - 1 = 0
x - 1 + 1 = 0 + 1
x = 1
==============
64%
16g of copper / 25g total weight = .64g of copper
