Solve each expression record in standard form

4tens plus 6tens

8hundreds plus 2hundreds

5thousands plus 7thousands

How do you solve 3n + 8 = 29

3 (2^9x-8) - 7=14 solve for x

Suppose that the correlation between midterm 1 and midterm 2 is 0.55; the mean and standard deviation of midterm 1 are 71 and 3, while for midterm 2 the mean and standard deviation are 81 and 4. There are 21 students in the class. Test, at level 0.

How many minutes does it take9 people to paint 7 walls?

How do you write 228 o/o as a fraction

What does a computer do when it's hungry

Brandie is trying to decide between two cell phones. One is free with a 2-year contract, but she will have to pay the sales tax of 8% on the original price$399 and the monthly charge is $10 more than she currently pays.

If the length of side a is 16 centimeters, the length of side b is 10 centimeters, and m = 42°, what is the measure of? Round your answer to two decimal places.

Solve for y. 18y - 6 = - 30

Multiply. (3x + 2) (3x - 2) A. x² + 12x - 4 B. 9x² - 12x - 4 c. 9x - 4 D. 9x² + 4