Answer:
15 marks
Step-by-step explanation:
If the average mark obtained by 3 students is 15, then the total marks are
⇒ 3 x 15 = 45
Let x be the marks obtained by the third student.
If two students obtained 12 and 18 marks, then
⇒ 12 + 18 + x = 45
⇒ 30 + x = 45
⇒ x = 45 - 30
⇒ x = 15
Answer:
$3355.20
Step-by-step explanation:
The formula for simple interest is ...
i = Prt
where P is the principal amount, r is the annual rate, and t is the number of years. Fill in the given values and do the arithmetic.
i = 12,000×0.0699×4 = 3355.20
Paul owes $3355.20 in interest.
From C you draw a parallel to AB. From left to right name the angles:
C₁, C₃ and C₂
∠C₁ = ∠A₁ (interior alternate)
∠C₃ = ∠C₃
∠C₂ = ∠B₂ (interior alternate), but ∠C₁ + ∠C₃ + ∠C₂ = 180° (straight line),
Then: ∠A₁ + ∠C₃ + ∠B₂ = 180°
Answer:
X is 35
Step-by-step explanation:
Since it’s a straight angle, the total measurement is 180 degrees. So if one angle is 145 then you subtract that from 180 and you will get 35 degrees.