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
= -
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:
B
Step-by-step explanation:
the reason is the
Her total bill is $186 because :
(3x39)+15+(2x27)
an explicit formula for the arithmetic sequence -5,13,31,49 is .
<u>Step-by-step explanation:</u>
Here we have an arithmetic sequence -5,13,31,49 . We need to find an explicit formula for the arithmetic sequence .Let's find out:
Let be terms of an A.P , common difference is :
⇒
⇒
⇒
⇒
We know that general term of an Arithmetic Progression ( A.P) is :
⇒
So , Here we will have
⇒
⇒
⇒
Therefore , an explicit formula for the arithmetic sequence -5,13,31,49 is .
1,050 is the correct answer