Answer:
12.8
Step-by-step explanation:
Given a parabola in standard form , ax² + bx + c : a ≠ 0
Then the x- coordinate of the vertex is
= - 
h = 3 + 14t - 5t² ← is in standard form
with a = - 5 and b = 14, thus
= - 
= 1.4
Substitute t = 1.4 into h for maximum height
h = 3 + 14(1.4) - 5(1.4)²
= 3 + 19.6 - 9.8 = 12.8
The mixed number equivalent to 1.35 is 1 7/20 or one and seven twentieths. If you need it, the improper fraction form is 27/20 or twenty-seven twentieths.
Your answer would be 2848. Always do the equation in the parentheses first, so -1 + 5 is 4. So then you multiply 4 by 712. Hope this helped :)
Answer:
x=10
Step-by-step explanation:
Using Pythagorean theorem,
(√13^2-12^2)×2
(√169-144)×2
(√25)×2
5×2=10
