Answer:
5 Soup can
Step-by-step explanation:
If 3 soup can cost $3.75
Then 1 soup can will cost $3.75/3
So, how many can soup will cost $6.25
= $6.26/(cost of 1 soup can)
= $6.25/($3.75/3)
=$6.25 × 3÷ 3.75
= 5 cans of soup
Answer:
$81.55
Step-by-step explanation:
$15+15%=15x1.15=$17.25
$23+10%=23x1.1=$27.50
$32+15%=32x1.15=$36.80
Total=$81.55
(Time to find a cheaper shop)
Answer:
Question 1: -2xy + 7x
Question 2: 8t - 4v and -4v + 8t
Question 3: -e + 10k and 10k -e
Question 4: x = -3
Add 3 to both sides so that the equation becomes -2x^2 + 5x + 5 = 0.
To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
x = [ -b ± √(b^2 - 4ac) ] / (2a)
x = [ -5 ± √(5^2 - 4(-2)(5)) ] / ( 2(-2) )
x = [-5 ± √(25 - (-40) ) ] / ( -4 )
x = [-5 ± √(65) ] / ( -4)
x = [-5 ± sqrt(65) ] / ( -4 )
x = 5/4 ± -sqrt(65)/4
The answers are 5/4 + sqrt(65)/4 and 5/4 - sqrt(65)/4..
