Answer:
x=9
Step-by-step explanation:
The purple expressions are equal because they are Z angles.
So solve
2x + 15 = 5x - 12
=>
15 + 12 = 5x - 2x
27 = 3x
x = 27/3 = 9
The answer is 14/20 or you can simplify it to 7/10 probability of choosing a red or blue stamp.
Answer:
Therefore after 3 years the height of these tree will be same.
Step-by-step explanation:
Given that,
Type A is 2 feet tall and grows at a rate of 17 inches.
Type B is 10 feet tall and is growing at a rate of 5 inches.
1 feet = 12 inches,
2 feet= (12×2) inches = 24 inches
5 feet= (12×5) inches = 60 inches
Let after t years, the height of these tree will be same.
After t years, the height of type A is =(24+17t)
After t years, the height of type B is =(60+5t)
According to the problem,
24+17t=60+5t
⇒17t-5t=60-24
⇒12t = 36
⇒t = ![\frac{36}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B36%7D%7B12%7D)
⇒t=3
Therefore after 3 years the height of these tree will be same.
Answer:
-2
Step-by-step explanation:
cause if you multiply a negative twice it becomes a positive
X = -4
double check by replacing x with -4