Evaluate the algebraic expressions, and put their values in order from least (1) to greatest (4), for a = 2 and b = 5 1. 50 − b2 + a 2. a2(5 − b) 3. b2 − 10 4. a(b − 3)

ill give brainiest to first answer

0

4

15

27

Step-by-step explanation:

a) The first expression is

When a=2 and b=5, we get

b) The second expression is

We substitute a=2 and b=5;

c) The next expression is

We substitute b=5 to get:

d) The fourth expression is

When a=2 and b=5

We know that:

0<4<15<27

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2