Answer:
x=4
Step-by-step explanation:
12=4-4x
4-4x=12
Add 4 to both sides
4x=16
Divide by 4
x=4
Answer:
39
Step-by-step explanation:
the equation is:
4x - 15 + x = 180
4x + x - 15 = 180
5x - 15 = 180
+15 = +15
5x - 0 = 195
5x/5 = 195/5
x = 39
(4x - 15) + x
(4(39) - 15) + 39
(195 - 15) + 39
141 + 39
180
A circle has 360 degrees but in the problem you are using half of it. You 180 that's why the whole equations has to equal 180 to be right.
you start with 60 and 15 of them like green.
you need to put 15 over 60 because that is how many people that like green.
15/60.... then you need to simplify
which would be 1/4
Its udefined because the question asked describe the line of a slope, now its not negative or positive because there is no change. Its undefined because its a line, going vertical way
A) Original price : y =10.x
Cheaper brand : y = 7x
The original box is $3 more than the cheap one. Proof:
Suppose 1 box is bought of each (x=1),original will cos10 & the cheaper $7
b) Each time he buys a cheap brand he save $3 ($10-$7), on 5 cheap boxes, he would save $3 x 5 boxes = $15