Understanding this proof for the proposition "For all integers a, gcd (9a+4, 2a+1) = 1.

Proof: gcd (9a+4, 2a+1) = gcd (2a+1, a) = gcd (a, 1). Since gcd (a, 1) = 1, gcd (9a+4, 2a+1) = 1.

Jordan is five years old. his mother says to him "if you have two apples and i give you two more apples, how many apples will you have?" jordan correctly says "four apples.

A gift store is ordering calendars to resell. the table shows the cost for the given number of calendars. what is the best value A) 6 calendars for $114 B) 8 calendars for $144 C) 10 calendars for $160 D) 15 calendars for $180

How do i write 2m in a verbal expression?

What is 235,000 rounded to the nearest 10,000

What is 842.121 rounded to the nearest tenth

Write the equation of the line whose slope is 1/3 and y-intercept is - 3. Write the answer in slope-intercept form.

Last week, Rick's Math Website had the following number of visitors: Monday = 250, Tuesday = 501, Wednesday = 260, Thursday = 490 and Friday = 711. About how many visitors came to Rick's Math Web last week?

For each cost function (given in dollars), find (a) the cost, average cost, and marginal cost at a production level of 1000units; (b) the production level that will minimize the averagecost; and c) the minimum average cost.

The sum of three numbers is 6. the third number is the sum of the first and second numbers. the first number is one more than the third number. Find the numbers

What is the final amount if 975 is increased by 1% followed by a further 9% increase? Give your answer rounded to 2 DP.