Answer:
Yuri is not correct.
Step-by-step explanation:
Given expression is q(x) = 6x³ + 19x² - 15x - 28
If 'a' is a root of the given function, then by substituting x = a in the expression, q(a) = 0
Similarly, for x =
,
![q(\frac{3}{4})=6(\frac{3}{4})^3+19(\frac{3}{4})^2-15(\frac{3}{4})-28](https://tex.z-dn.net/?f=q%28%5Cfrac%7B3%7D%7B4%7D%29%3D6%28%5Cfrac%7B3%7D%7B4%7D%29%5E3%2B19%28%5Cfrac%7B3%7D%7B4%7D%29%5E2-15%28%5Cfrac%7B3%7D%7B4%7D%29-28)
= ![6(\frac{27}{64})+19(\frac{9}{16})-15(\frac{3}{4})-28](https://tex.z-dn.net/?f=6%28%5Cfrac%7B27%7D%7B64%7D%29%2B19%28%5Cfrac%7B9%7D%7B16%7D%29-15%28%5Cfrac%7B3%7D%7B4%7D%29-28)
= ![(\frac{162}{64})+(\frac{171}{16})-(\frac{45}{4})-28](https://tex.z-dn.net/?f=%28%5Cfrac%7B162%7D%7B64%7D%29%2B%28%5Cfrac%7B171%7D%7B16%7D%29-%28%5Cfrac%7B45%7D%7B4%7D%29-28)
= ![(\frac{162}{64})+(\frac{684}{64})-(\frac{720}{64})-\frac{1792}{64}](https://tex.z-dn.net/?f=%28%5Cfrac%7B162%7D%7B64%7D%29%2B%28%5Cfrac%7B684%7D%7B64%7D%29-%28%5Cfrac%7B720%7D%7B64%7D%29-%5Cfrac%7B1792%7D%7B64%7D)
= ![-\frac{1666}{64}](https://tex.z-dn.net/?f=-%5Cfrac%7B1666%7D%7B64%7D)
=
≠ 0
Therefore, Yuri is not correct. x =
can not be a root of the given expression.
Answer:
cost = 8p + 5
Step-by-step explanation:
$8*[number of pizzas] + $5 delivery fee
$8p + $5
8p + 5
cost = 8p + 5
Answer:
1.25.
Step-by-step explanation:
The common ratio r is 1/5 and the first term a1 = (1/5)^(1-1) = 1.
Sum to infinity = a1 / (1 - r)
= 1 / (1 - 1/5)
= 1 / 4/5
= 5/4
= 1.25 (answer)
Answer:
A) T'(-2,3), U'(0,5), V'(-1,0)