Answer:
2.25
Step-by-step explanation:
The radius of this
Answer:
There are 253 ways to select 5 participants
Step-by-step explanation:
Total number of volunteers to try a new brand of tennis shoes = 10
Number of volunteers to be selected = 5
We are supposed to find number of ways the research group select 5 participants.
We will use combination:
Formula:
Substitute n = 10 and r = 5
So,
Hence There are 253 ways to select 5 participants
(a) The parabola opens downward.
(b) The axis of symmetry is at x = -2.
(c) The vertex is at (-2,0).
(d) The x-intercepts is (-2,0), and the y-intercept is at (0,-1).
<span>−<span>1.5 <span>(<span>4 − n</span>) </span></span></span>+ <span>2.8
</span><span>Distribute:
</span><span><span><span>(<span>−1.5</span>) </span><span>(4) </span></span>+ <span><span>(<span>−1.5</span>) </span><span>(<span>−n</span>) </span></span></span>+ <span>2.8
</span><span><span>−6 </span>+ <span>1.5n </span></span>+ <span>2.8
</span>
<span>Combine Like Terms:
</span><span><span>−6 </span>+ <span>1.5n </span></span>+ <span>2.8
</span><span>(<span>1.5n</span>) </span>+ <span>(<span><span>−6 </span>+ 2.8</span><span>)
</span></span><span>1.5n </span>+ <span>−<span>3.2
</span></span>
The answer is <span>1.5n </span>+ <span>−<span>3.2</span></span>
