A is the correct answer, I believe.
Answer:
A
Step-by-step explanation:
Divide both sides with -16. ALWAYS remember that if you divide any number with a negative number, this "< ≤ > ≥" symbols have to change to the opposite direction
42 is 5% of 840.Calculate it like this 42÷840×100,just try other question it will nelp you.
Answer:
a
Step-by-step explanation:
its a
Step-by-step explanation:
step 1. the 3 internal angles of a triangle add up to 180°. let x be the 3rd angle
step 2. x + 34 + 72 = 180
step 3. x = 74°.
step 4. for problem 5 let the internal angles be a, b, and c
step 5. so b = 2a - 10, c = b + 25
step 6. we also know that a + b + c = 180
step 7. so a + (2a - 10) + (b + 25) = 180 by substitution
step 8. a + (2a - 10) + ((2a - 10) + 25) = 180 also by substitution
step 9. 3a - 10 + 2a + 15 = 180
step 10. 5a + 5 = 180
step 11. a = 35°
step 12. therefore b = 2a - 10 = 60°, c = 85°.
