Evaluate 3+11t -9u3+11t−9u3, plus, 11, t, minus, 9, u when t=9t=9t, equals, 9 and u=11u=11u, equals, 11.

  3

Step-by-step explanation:

Fill in the numbers and do the arithmetic:

  3+11t -9u = 3 + 11(9) -9(11) = 3

Your understanding of the commutative property of multiplication lets you observe that 11·9 = 9·11. You also know that adding opposites results in zero, so 11·9 - 9·11 = 0

Of course, 3 + 0 = 3.

In other words, you don't actually have to work it out as ...

  3 + 11(9) -9(11)

  = 3 + 99 - 99

  = 102 -99

  = 3

3

Step-by-step explanation:

Let's substitute t = 9 and u  = 11 into the expression.

3+11t−9u

=3+11(9)−9(11)

=3+99-99=3+99−99

=3

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!