Answer:
Step-by-step explanation:
→ Expand out the brackets
3x + 3 < 18
→ Minus 3 from both sides to isolate 3x
3x < 15
→ Divide both sides by 3 to isolate x
x < 5
Answer:
<2 and <3
Step-by-step explanation:
Given that lines l and m are parallel to each other, and crossed by the transversal line t, the angles formed that are supplementary to <1 are <2 and <3.
<1 and <2 are linear pair. Their sum equal 180°.
<1 and <2 are also a linear pair. Their sum equal 180°.
Therefore, that are supplementary to <1 are <2 and <3.
The half-life of the element is 13 minutes, which means after 13 minutes, any starting amount decays to half. So element X decays with a rate k such that
Solve for k :
Now, we solve for t such that