A math teacher has $900 to buy new calculators. If each calculator costs $90, how many calculators can the teacher buy?

10 calculators

all you have to do is divide 900 by 90

in order to get the answer

when you divide by 90 you get the answer of 10

Step-by-step explanation:

table 1

step-by-step explanation:

1-16

2-32

4-64

8-128

all multiples of 16

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.