The word "difference" tells us that we will be using subtraction. Also, subtraction is not the same if you reverse the terms like, x - 2 and 2 - x are not the same. In your question it say "d and 7" so that's the order we use in the algebraic expression.

3 0

1 year ago

Train a and train B left a central station at the same time they travel the same speed but in opposite directions return a headi

baherus [9]

You go A to B & B 2A + 8 + B to A&A to B&B to a and then you go see 2D to see 2D to see you today to see 2D which equals a + 8 + 8 + 8 + 8 and that's your answer for this question I know it doesn't look like it makes sense but it's correct I think

3 0

4 years ago

Find perimeter of this square with sides of length 5 cm

lukranit [14]

Answer:

P = 20 cm

Step-by-step explanation:

the perimeter (P) is the sum of the 4 sides (s) of the square

the sides of a square are congruent , then

P = 4s = 4 × 5 = 20 cm

3 0

2 years ago