Answer:
1.4
Step-by-step explanation:
12x+3x=15+6
15x=21
X=21/15
X=7/5 or 1.4
<h2><u>Solution</u></h2>

<h3>Hope This Helps You ❤️</h3>
Answer: 9
Step-by-step explanation:
If you put all the numbers in order from least to greatest 9 is in the middle.
The length of the altitude is 
Explanation:
Let ABC be an equilateral triangle.
It has sides of length 16 cm
Let AD be the altitude of the triangle.
We need to determine the length of an altitude.
Let AC = 16 cm and CD = 8 cm
Let us consider the right angled triangle ADC
Using the Pythagorean theorem, we have,

Substituting the values, we get,




The length of the altitude is 
Answer:
2
Step-by-step explanation:
18 = 2 × 3 × 3
22 = 2 × 11
choose the number that appears most
which is 2