(192+214+250+x)/4=225
solve for x
(656 + x)/4= 225
656+x = 225*4
656 + x = 900
x = 900 - 656
x= 244
Answer:
D
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
To obtain this form use the method of completing the square.
Given
f(x) = - 0.6x² + 4.2x + 240 ← factor out - 0.6 from the first 2 terms
= - 0.6(x² - 7x) + 240
To complete the square
add/ subtract ( half the coefficient of the x- term)² to x² - 7x
f(x) = - 0.6(x² + 2(- 3.5)x + 12.25 - 12.25 ) + 240
= - 0.6 (x - 3.5)² + 7.35 + 240
= - 0.6(x - 3.5)² + 247.35
with vertex = (3.5, 247.35 )
The maximum value is the y- coordinate of the vertex
Then
f(x) = - 0.6(x - 3.5)² + 247.35 has a maximum value of 247.35
Step-by-step explanation:
5^5•5 = 5^3
y^2/y= y^1 =y
a^2•a^3•a= a^6
b^5/b^7= b^-2
y^5/y^4=y
m^3•m^5•m^2=m^10
Answer:
20 square units
Step-by-step explanation:
count the face of the figure one by one
