-5 - (-2)³ = -5 - (-2) × (-2) × (-2) = -5 - (-8) = -5 + 8 = <u>3</u>
Answer:
(5, - 4)
Step-by-step explanation:
Given a quadratic in standard form : ax² + bx + c : a ≠ 0
Then the x- coordinate of the vertex is
= - ![\frac{b}{2a}](https://tex.z-dn.net/?f=%5Cfrac%7Bb%7D%7B2a%7D)
x² - 10x + 21 ← is in standard form
with a = 1, b = - 10, so
= -
= 5
Substitute x = 5 into the quadratic for the corresponding value of y
y = 5² - 10(5) + 21 = 25 - 50 + 21 = - 4
vertex = (5, - 4)
Answer:
Enrique goes for a walk every 3 days, to play his guitar every 8 days and to dance every 12 days. Every how many days do you carry out the three activities?
Answer
I think its C which is 112
![\star](https://tex.z-dn.net/?f=%5Cstar)
<span>In any arithmetic sequence, each term is equal to the previous term plus the common difference.
</span>
![\star](https://tex.z-dn.net/?f=%5Cstar)
Thus, the second term is equal to the first term plus the common difference. In this sequence, the second term, 5, is 3 less than the first term, 8<span>.
</span>
![\star](https://tex.z-dn.net/?f=%5Cstar)
Therefore, the common difference is <span>-3. </span>