12x+9= 45, x =3 3 is the answer
Answer:
X=3
Step-by-step explanation:
4x-12+1=1
4x=1-1+12
4x=12
x=12/4
x=3
I'm not to clear on what this triangle is trying to say but if 18 is a side and 12 is a side let's use the Pythagorean theorem to solve for the other side
18²=a²+12²
324=a²+144
180=a²
√180 = a
13.41 =a
since x look about twice a
x=2*13.41
x=26.8
Answer:
Good style in solving such problems is to notice/(to observe) immediately from the condition that the difference
between two combinations is the cost of 2 cookies, and it is equal to $9 - $7 = $2. So 2 cookies cost $2.
Then subtracting $2 dollars for 2 cookies from the Greg purchase, you got the cost of two bottles - it is equal to $7 - $2 = $5.
Answer. A bottle of water costs $2.50.
Step-by-step explanation: