Tema : matemáticas OPERACIÓNES CON NÚMEROS NATURALES 1- propongan problemas que puedan resolverse a mediante de las siguientes ecuaciones

1_ 200- 5n =40- n

2_ (2a + 1)-a = 5​

The second and fourth answer are correct

The skating rink rented 872 pairs of skates during april and may.why? : if the skating rink rented three times the pair of skates in april during may, they rented 654 skates. 218 x 3 = 654then, if they want to know how many they rented during both april and may, then you just add 654 (may) and 218 (april) to give you 872 pairs of skates for both months.654 + 218 = 872hope this !

Hello!

the answer is:

the correct option is the option b.

why?

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!