Answer:
Step-by-step explanation:
a) In the pic.
b) He must fill 144 baskets. I did 360÷2.5 because 360 is the amount he wants to earn, and 2.5 is the amount he gets for each basket. By dividing, I find the number of baskets he must pick.
c) The expression would be: x÷2.5 I did this because whatever amount of money he wants to earn, he needs to divide it to find the amount of baskets he needs to pick.
Answer:
(1, - 2 )
Step-by-step explanation:
Given the equations
9x + 2y = 5 ( subtract 9x from both sides )
2y = 5 - 9x ( divide terms by 2 )
y = 2.5 - 4.5x → (1)
7x - 3y = 13 → (2)
Substitute y = 2.5 - 4.5x into (2)
7x - 3(2.5 - 4.5x) = 13
7x - 7.5 + 13.5 = 13 , that is
7x + 6 = 13 ( subtract 6 from both sides )
7x = 7 ( divide both sides by 7 )
x = 1
Substitute x = 1 into (1) and evaluate for y
y = 2.5 - 4.5(1) = 2.5 - 4.5 = - 2
solution is (1, - 2 )
Answer:
Let the number of pages be y and the number of chapters be x, then y = 24 + 12x + 48 = 12x + 72
y = 12x + 72
If the book has 25 chapters, the number of pages will be y = 12(25) + 72 = 300 + 72 = 37 pages.
Step-by-step explanation
448 rounded to the nearest 10 is 450 because 448 is closer to 450 not 440.