Answer:
∠1 and ∠4
Step-by-step explanation:
Answer:
ok
Step-by-step explanation:
35
Answer:
<h2>800</h2>
Step-by-step explanation:

Answer: d=42
Step-by-step explanation:
Both angles are in a supplementary (straight with 180 degrees) line bisected by an angle, so use the supplementary angle theory
(d+7)+(3d+5)=180
4d+12=180
4d=168
d=42
Answer:
34 grams
Step-by-step explanation:
If the remaining sample has 30.26 grams of radioactive substance, and 11% of it decayed, that means that 30.26 grams is 89% of the original. Let the original be x.
30.26=0.89x
Multiply both by one hundred
3026=89x
Divide both by 89
34=x
x=original, so the original was 34 grams.