Answer:
Number of children, x= 400
Number of adults, y = 100
Step-by-step explanation:
Let the number of children be x
Let the number of adults be y
Given : Total number of people, x + y = 500 --------(1)
Total amount collected, 5x + 10y = 3000 ---------(2)
(1) => y = 500 - x
Substitute y in (2) : 5x + 10(500 - x) = 3000
5x + 5000 - 10x = 3000
-5x = 3000 - 5000
-5x = -2000
x = 400
Substitute x in (1) : 400 + y = 500
y = 500 - 400
y = 100
Answer:
x = 4 ± 
Step-by-step explanation:
Given
x² - 8x = 3
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 4)x + 16 = 3 + 16
(x - 4)² = 19 ( take the square root of both sides )
x - 4 = ± ( add 4 to both sides )
x = 4 ±
Answer:
5,500,000
Step-by-step explanation:
I'm not sure if this is correct but how I got that was I divided 11,000,000 by 2. I'm sorry if it's incorrect
Answer:
she will have read 15 books in all
Step-by-step explanation:
if she has read 10 books in 2 months that means she has read 5 books each month, because 10 ÷ 2 = 5.
so if another month passes by that means she reads another 5 books.
10 + 5 = 15
so in total britney has read 15 books in total
