Answer:
175
the error in the diagram is that it implies Elena read 1/5 of the book, not Andre
Step-by-step explanation:
x= total number of pages
A = 1/5*x
E = A+20 = 1/5*x+20
1/5*x + 20 = 55
1/5*x = 35
x = 35*5 = 175
Answer:
f(x) = (x - 4)² - 13
Step-by-step explanation:
Given
f(x) = x² - 8x + 3
To complete the square
add/subtract ( half the coefficient of the x- term )² to x² - 8x
f(x) = x² + 2(- 4)x + 16 - 16 + 3 = (x - 4)² - 13
20x≥100
x≥5
5 gallons needed to travel 100 miles
Okay. 60 equals twice the number added to itself. That would be 30, because 60 is twice of 30 and 30 added to itself is 60. The number is 30.
