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Naily [24]
3 years ago
9

Maria is using the random number table shown to select students for her survey. She assigned each of the 300 students in the sch

ool a three-digit number starting with 001. Beginning on Line 13, what is the third student number chosen for the sample?
A. 020
B. 171
C. 529
D. 639

Mathematics
1 answer:
pishuonlain [190]3 years ago
8 0
I believe the answer is C
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Whats balance fe+30^2 >fe^2O^3
blsea [12.9K]

Answer:

You are given:

4Fe+3O_2 -> 2Fe_2O_3

4:Fe:4

6:O_2:6

You actually have the same number of Fe on both sides, The same is true for O_2 so yes this equation is properly balanced.

For added benefit consider the following equation:

CH_4+O_2-> CO_2+2H_2O

ASK: Is this equation balanced? Quick answer: No

ASK: So how do we know and how do we then balance it?

DO: Count the number of each atom type you have on each side of the equation:

1:C:1

4:H:4

2:O:4

As you can see everything is balanced except for O To balance O we can simply add a coefficient of 2 in front of O_2 on the left side which would result in 4 O atoms:

CH_4+color(red)(2)O_2-> CO_2+2H_2O

1:C:1

4:H:4

4:O:4

Everything is now balanced.

Step-by-step explanation:

5 0
2 years ago
Consider the following functions.<br> f(x) = x^2- 4<br> g(x) = x-2<br> What is (f(x)) (g(x))?
rodikova [14]

Answer:

(f(x) g(x)) = x^3-2x^2-4x+8 ; all real numbers

Step-by-step explanation:

(f(x) g(x)) = (x^{2} -4)(x-2)

              = x^3-2x^2-4x+8  via FOIL

6 0
3 years ago
Which best explains why the given lines are or are not perpendicular x=-2,y=8
vesna_86 [32]
The two lines are perpendicular because both of the lines intersects
8 0
3 years ago
Simplify.
Ne4ueva [31]

Answer:

need help ....................

8 0
3 years ago
Read 2 more answers
Dan uses 6 1/4 cups flour to make pita bread for his family. The recipe calls for 2 1/2 cups. How many batches of pita bread rec
Dominik [7]
Here is the answer to the problem above. Given that the recipe only calls for 2 and 1/2 cups and this is for one batch only, and Dan used 6 and 1/4 cups, we will solve how many batches of pita bread he made by dividing 6 and 1/4 by 2 and 1/2. So this would be 25/4 divided by 5/2. So the result is 2 and 1/2. So the number of batches of Pita bread he made is 2 and 1/2 batches. Hope this answer helps.
5 0
3 years ago
Read 2 more answers
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