If 0.3 = 1 then 0.9 = 3 because 0.3+0.3+0.3=the 3.
Answer:
i think you have to explain what we did work on...
Step-by-step explanation:
Substitute y
3(6x+2)-18x=12
18x+12-18x=12
18x-18x=0
0=0
Solution: Infinitely many solutions
Hoped this helped!<span />
Answer:
BC = 1.71
Step-by-step explanation:
SOHCAHTOA
Cosine = Adjacent over Hypotenuse
cos70 = ? / 5
? = 5*cos70
? = 1.7101
Answer:
Part 1. x = 20 - y and z = 3y - 4
Part 2. Mike's age = x = 15 years and Joe's age = z = 11 years.
Part 3. Sally's age will then be 10 years.
Step-by-step explanation:
Given that Sally's age is y years.
The sum of Sally's age and Mike's age is 20.
Joe is 4 years less than triple Sally's age.
Part 1.
Therefore, Mike's age is x = 20 - y.
And Joe's age is, z = 3y - 4.
Part 2.
If Sally's age were 5 years, the Mike's age = x = 20 - 5 = 15 years.
And Joe's age = z = 3 ×5 - 4 = 11 years.
Part 3.
If Sally and Mike has the same are i.e. x = y = 20 - y
⇒ 2y = 20
⇒ y = 10 years.
Therefore, Sally's age will then be 10 years. (Answer)
