give two rational numbers whose sum is rational, difference is rational, product is rational, division is rational

Johanna graphed the number of calls she made during one day. How many calls were made before 6 p. m.? Cell Phone Calls Numberdal 10 am - 21:59 am 12pm. 1.59 pm 2 pm. 4 pm 3:59 pm. 5.59 p. m. Time of Day 6pm ... 7:59 pm 8 pm 9:59 pm

if one tablet contains 10.5 mg of calcium. how much does a bottle of 20 tablets contain of calcium?

In the space at the right, draw a triangle : Use an algebraic expression to label the length of each side. Write an expression for the perimeter of your triangle. Then simplify that expression.

Find each exact value if 0 x pi/2 and 0 y pi/2 sec (x-y)

Solve this equation: 4y + 228 = 352. A. y = 31 B. y = - 31 C. y = 3 D. y = 145

The sum of two numbers is 90. their difference is 12. what are the numbers?

Stat crunch in a random sample of 200 adults, what is the probability that less than 33 % have no credit cards?

There are 2.54 centimeters in an inch. when using this conversion factor, how many significant figures are you limited to?

How many 4 letter words can be formed from the alphabets?

What is the common factor of this term 6xy^2 = (3x) (?)