Answer:
There is only one perfect number between 20 to 30 which is 28.
<h3>Explanation:</h3>
The number 28 is a perfect number because its factors are 1, 2, 4, 7, 14 and 28.
Answer:173
Step-by-step explanation:
Answer:
Step 1: Multiply the entire first equation by 2.
Step 2: Rewrite the system of equations, replacing the first equation with the new equation.
Step 3: Add the equations.
Step 4: Solve for x.
Step 5: Find the y-value by substituting in 3 for x in either equation.
Step 6: Identify the solution as an ordered pair.
Answer:
Step-by-step explanation:
8 and 47
Answer:
y ≥ 9x - 14
Step-by-step explanation:
Isolate y to one side:
9x - y ≥ 14
Subtract 9x from both sides, and rearrange the order
-y ≥ -9x + 14
Multiply both sides by -1
y ≥ 9x - 14
-Chetan K