Answer:
x = 4.9t²
Step-by-step explanation:
x is directly proportional to t²
x = kt²
When t = 2 , x = 19.6
Substitute into the equation
x = kt²
19.6 = k * 2²
19.6 = k * 4
19.6 = 4k
k = 19.6/4
k = 4.9
Substitute the value of k into the equation:
x = kt²
x = 4.9t²
Answer:
all you do is multiply 3.6 and 109 to see if its 45,000 per year
Step-by-step explanation:
Idk but maybe key words maybe it’s D don’t quote me tho
Answer:
<h2>-3 ; 3</h2>
Step-by-step explanation:
4x² - 36 = 0 ⇌ (2x)² - 6² = 0 ⇌ (2x - 6)(2x + 6) = 0 ⇌ 2x - 6 = 0 or 2x + 6 = 0
⇌ x = 3 or x = -3
Answer:
7 candidates passed maths only
6 candidates passed physics only
23 students sat in examination
Step-by-step explanation:
