Answer:
-45
Step-by-step explanation:
(4.5)*5*(-2) = 4.5* (5*(-2)
= 4.5 * (-10)
= -45.0
= -45
Answer:13
Step-by-step explanation:
36-23=13
Answer:
A%7.2= ( 7.5№) =(+--+) this is the best answer
Answer: El mayor lado del rectangulo tiene 10cm
Step-by-step explanation:
El perímetro de un rectángulo puede escribirse como:
P = 2*L + 2*A
Donde L es el largo y A es el ancho.
Sabemos que uno de los lados es 6cm mas largo que el otro, entonces podemos escribir:
L = A + 6cm.
P = 28cm = 2*L + 2*A
podemos reemplazar la primera ecuación en la segunda:
28cm = 2*(A + 6cm) + 2*A
28cm = 12cm + 4*A
28cm - 12cm = 4*A
16cm/4 = A
4cm = A.
Entonces el ancho es 4 cm, y el largo es L = 4cm + 6cm = 10cm
Answer:
1. 
2. 
Step-by-step explanation:
1. 
Do cross multiplication

Distribute 3 through the parentheses

Move 3x to left hand side and change it's sign

Collect like terms

Divide both sides by 3

Calculate

The value of x is 1
---------------------------------------------------------------------
2. 
Do cross multiplication

Distribute 2 through the parentheses
Similarly, distribute 6 through the parentheses

Move 12n to left hand side and change it's sign
Similarly, move 48 to right hand side and change it's sign

Collect like terms

Add the numbers : 48 and 2

Divide both sides by -10

Calculate

The value of n is -5 .
Hope I helped!
Best regards! :D