You can multiply everything by 7 to make things simpler.
3x + 5 = 4
3x = -1
x = -1/3
3/x<span>÷5=1/10
3</span><span>÷5=1/10*x
6/10=1/10*x
6=x</span>
Answer:
9n + 30 ≥ -28
Step-by-step explanation:
Let the number be n. Then, symbolically, this statement is:
9n + 30 ≥ -28
Given:
pH = 4.2 of tomato
Required:
hydrogen-ion concentration [H+]| for tomato juice
Solution:
The formula for the pH relating hydrogen ion concentration is pH =
-log[H+] where H+ is the hydrogen ion concentration. so, substitute the value
of pH
pH = -log[H+]
4 = - log[H+]
-4 = log[H+]
10^-4 = [H+]
[H+] = 1x10^-4M
If ur statement is true, then the negation is false.
so the negation would be : All vans have 3 wheels.
