Justify the last two steps of the proof. Given: RS UT and RT US Prove: ARST = AUTS R S T Proof: 1. RS = UT 2. RT = US 3. STETS 4. ARST = AUTS 1. Given 2. Given 3. ? 4. 2

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg