Answer:

Step-by-step explanation:
So we have the expression:

To multiply, distribute the left to the terms on the right:

Distribute:

Combine like terms:

Simplify:

Therefore:

Before we get started, it is good to remember PEMDAS - the acronym that tells you the order to carry out equations.
P = parentheses
E = exponents
M = multiplication
D = division
A = addition
S = subtraction
Knowing this, we should start by doing the equations <em>within </em>each parentheses.

So we did the addition and subtraction pieces within each group leaving us with the above equation. Now let's multiply:

20 is the answer.
Notice that the triangle is a right triangle, because of the right angle. By the Pythagorean Theorem,

. Then

, d. 8 m
Answer:
3/10
Step-by-step explanation:
3/5 se puede convertir en 6/10
(3x2)/(5x2).
9/10 - 6/10 = 3/10
le falta 3/10 para llegar a 9/10.
Answer:
2000
Step-by-step explanation:
1km=1000m
2km=2000m