16

Select the correct answer.

For Al, its atomic number is 13 and its mass number is 27. How many neutrons does it have?

O

A.

13

ه

ن

م

نا

40

Reset

Next

Eugene wrote a riddle: A positive number is 5 less than another positive number. Six times the lesser number minus 3 times the greater number is 3. Find the two positive numbers.

4 x (3+18) : 6 by the way: this is a fifth grade question

Statistics question-needs to show

The percent of sales tax is 6%. What is the sales tax on a skateboard that costs $98?

The parade had 127 floats. Thatis 34 fewer floats than last year. How many floats were in the parade last year?

How many times larger is the rectangular prism than the cube? A. 6 B. 4 C. 30 D. 2

Which expressions are equivalent to 5 x minus 15? Select three options. 5 (x + 15) 5 (x minus 3) 4 x + 3 y minus 15 minus 3 y + x Negative 7 y minus 6 x minus 8 y + x Negative 20 minus 3 x + 5 + 8

Which statement is true about f (x) = square root x

Two times the smallest of three consecutives even integers is four more than three times the largest. Find the integers.

If f (x) = 8x and g (x) = 2X+1 find (fog) (x)