Answer:

Step-by-step explanation:
Solve like a normal equation by isolating the variable and then dividing by the coefficient.

Answer:
The number 4 is the first term of the sequence
Step-by-step explanation:
we know that
<u>Counting backwards</u> is when the numbers are count in reverse sequence
Is also know as 1 less
In this problem the sequence of counting backwards from 5 is equal to
4,3,2,1,0
therefore
The number 4 is the first term of the sequence
Answer:
NO 21
Step-by-step explanation:
9x2=18
18+3=21
Answer:
15
Step-by-step explanation:
The hypotenuse of a triangle is a² + b² = c².
12² + 9² = c²
144 + 81 = 225
√225 = 15
Answer:
Q?
Step-by-step explanation: