Answer:
Option B
Step-by-step explanation:
Please see attached picture for full solution.
Answer:
x=4
y=-3
Step-by-step explanation:
use substitution method :
1)
7x + 8y = 4 ... (1)
3x + 2y = 6 ... (2)
2) Create the third equation by using
equation (2)
3x + 2y = 6
3x = 6-2y
x = 6-2y/3 ..... (3)
3) Substitute (3) into (1)
7(6-2y)/3 + 8y = 4
4) Solve the equation
42 - 14y /3 + 8y = 4
42 -14y+24y = 12
10y = 12-42
y = -3
5) Find value of x
x = 6-2y/3
= 6 -2(-3)/3
= 12/3
= 4
Hello there! You can structure these word problems correctly, by looking at the key words and tying them in to write the problem correctly. Number is represented by the variable "n". With that being said, if you do it right, here are the answers:
1. n - 18
2. n - 16
3. x + 12 = 21
4. x * 12 = 46
5. 6 + 12
6. 2 * 8
7. 2n + 6
8. 8/2n
9. 7 + x
10. x * 11 = 33
Answer:
D. We can label the rational numbers with strings from the set (1, 2, 3, 4, 5, 6, 7, 8, 9, / -) by writing down the string that represents that rational number in its simplest form. As the labels are unique, it follows that the set of rational numbers is countable.
Step-by-step explanation:
The label numbers are rational if they are integers. The whole number subset is rational which is written by the string. The sets of numbers are represented in its simplest forms. The rational numbers then forms numbers sets which are countable.
