The correct answer is 1087
Answer:
119/38 = n
Step-by-step explanation:
7-2n 1
------------ = ---
7+2n 18
We can use cross products to solve
(7-2n) * 18 = (7+2n) *1
Distribute
18*7 -18*2n = 7+2n
126 - 36n = 7+2n
Add 36n to each side
126 -36n+36n = 7+2n+36n
126 = 7+38n
Subtract 7 from each side
126-7 = 7+38n-7
119 = 38n
Divide by 38
119/38 = 38n/38
119/38 = n
Answer:
r=-2/3 or r= 6
Step-by-step explanation:
To solve this equation to find r, first subtract 5 from both sides.
3r² - 16r -7 -5= 5 -5
3r² - 16r -12= 0 (simplify)
(3r + 2)(r - 6)= 0 (factorise the equation)
3r+2=0 or r-6=0
3r= -2 or r= 6
r= -2/3
Answer:
¹/₄x - 3 ≥ 2
+ 3 + 3
4(¹/₄x) ≥ 4(5)
x ≥ 20
Step-by-step explanation:
