Answer:
A. The curve is a parabola with a vertex at (3,-4) and is traced from left to right for increasing values of t.
Step-by-step explanation:
x = 3 + t
y = t² − 4
Eliminating the parameter:
t = x − 3
y = (x − 3)² − 4
This is an upwards parabola with a vertex at (3, -4).
x = 3 + t, so as t increases, x increases.
So the curve is traced from left to right.
Answer: The answer is the yellow square.
Answer:
see explanation
Step-by-step explanation:
Given the sequence
1, 3, 6, 10, 15
(a)
This is the sequence of triangular numbers.
After the first term the pattern is
+ 2, + 3, + 4, + 5, ............
(b)
Using this pattern then
a₆ = a₅ + 6 = 15 + 6 = 21
a₇ = a₆ + 7 = 21 + 7 = 28
a₈ = a₇ + 8 = 28 + 8 = 36
(c)
The n th term formula for triangular numbers is
= n(n + 1)
(d)
Substitute n = 21 into the formula
a₂₁ = × 21 × 22 = 21 × 11 = 231
<span>22,119 rounded to the nearest hundred
=
22,100
hope it helps</span>
Answer:
284 kgs
Step-by-step explanation:
4 bushels = 112 kg
8 bushels = 224 kg
PLUS
0.5 bushels = 60 kg
8.5 bushels = 224 + 60 = 284 kg
8.5 bushels of oats weighs 284 kgs.
Hope this helps! :)