Jorge has to decide what to do with all the letters his store receives. He simply moves 90 letters from his INBOX to his OUTBOX. Now he is down to 79 letters in the INBOX and up to 156 letters in the OUTBOX. Before he moved the letters, how many were in the INBOX

169 letters

Step-by-step explanation:

Given:

He moves 90 letters from his INBOX to his OUTBOX.

After moving it is down to 79 letters in the INBOX and up to 156 letters in the OUTBOX.

Question asked:

Before he moved the letters, how many were in the INBOX ?

Solution:

Let initially letters having in the INBOX =

According to question:-

As he moved the 90 letters from his INBOX to his OUTBOX, we will write this as:

Initially letters having in the INBOX - Letters mover from = 79

Adding both side by 90

Therefore, before he moved the letters, there were 169 letters in the INBOX.

1

step-by-step explanation:

it's the only multiple of both and the least

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)