y+1=2x-3
y=2x-4
2x-3=y+1
2x-4=y
y=2x-4
2y+2=4x-6
2y=4x-8
y=2x-4
They are all the same: y=2x-4
Formula= amount=principal(1+rate/100)^time
a=3000(1+2.5/100)^5
a=3000(100/100 +2.5/100)^5
a=3000(102.5/100)^5
a=3000(1.025)^5
a=3000x1.131408212890625
a=3000x1.1314
a=3394
hope you understood
Answer:
There are 68 students in the class after these changes.
Step-by-step explanation:
g = number of girls
b = number of boys
Because the ratio of girls to boys is 3:1, initally the equation was
g = 3b
Finally, we have
g-1 girls because one girl dropped the class
b+3 boys because three more boys signed up
Because the new ratio of girls to boys is 5:2, the new equation is
(g - 1)/(b + 3) = 5/2
Cross multiply.
2(g - 1) = 5(b + 3)
2g - 2 = 5b + 15
2g - 5b = 17
Then, substitute g (which is 3b because the first equation was g = 3b)
2(3b) - 5b = 17
b = 17
g = 3b = 3*17 = 51
g = 51
The final number of students in the class = 17 + 51 = 68
Answer: 68
Well if you simplify it, it will not work it stays the same, but if your solving for x it would be x = <span>5.010679
Hopes this helps ya!</span>
