Answer:
The fourth number is 13
Step-by-step explanation:
7+9+11+13 = 40 it's the only one that works
3.2E-9
A bit complicated, so PLEASE don't ask for an explanation
Answer:
h = 7.7 cm
Step-by-step explanation:
you can create a proportion using Law of Sines
<u> sin 90 </u> = <u> sin 31 </u>
15 h
<u> 1 </u> = <u> 0.515 </u>
15 h
h ≈ 7.7
Answer:

Step-by-step explanation:
