If you add or subtract two rational numbers, is the result sometimes, always, or never rational?

Three blocks a, b, and c and a grooved block d have dimensions a, b, c, and d as follows: a 5 1.500 6 0.001 in b 5 2.000 6 0.003 in c 5 3.000 6 0.004 in d 5 6.520 6 0.010 in d a b b c d a w c (a) determine the mean gap w and its tolerance.

Does the equation Axequalsb have a solution for each b in set of real numbers RSuperscript 4 ? A. No, because A has a pivot position in every row. B. Yes, because the columns of A span set of real numbers RSuperscript 4. C.

I would like to know if 4 dm is greater or less than 40 cm

You deposit $1400 into a savings account that earns simple annual interest. After 12 years, the balance in the account is $2408. What is the annual interest rate?

X-intercept = - 1 Y-intercept = 5

What are the real and imaginary parts of the complex number? 2-5i The real part:? The imaginary part:?

If one card is drawn from a deck what is the probability of getting a red card

Latasha made 128 ounces of punch. How many cups of punch did Latasha make?

What is 4 6/8+11 1/3

The coefficient of the product of (-5xy2) and (-4x2y) is