-7 = -11 + v/5
-7 = v/5 - 11
-7 + 11 = v/5
4 = v/5
4 × 5 = v
v = 20
The answer is: v = 20.
<span>3x – y = 18
</span><span>3x – 27 = 18
</span><span>3x= 45
x =15</span>
Answer:
<u>1 gallon / 600 sq ft</u>
Step-by-step explanation:
As we can see, we are given that 600 sq ft uses one gallon to cover, therefore one gallon covers 600 sq ft (just vice versa of what's given).
Answer:
x has no real solution
Step-by-step explanation:
Our equation is qudratic equation so the method we will follow to solve it is using the dicriminant :
- Let Δ be the dicriminant
- a=1
- b=2
- c=9
- Δ= 2²-4*1*9 =4-36=-32
- we notice that Δ≤0⇒x has no real solution
