Use grouping symbols to make each statement true.31) 25-8•3=51 32)9+4•5-3=17

Please make your entries easy to read by using proper separators and by omitting problem numbers:

31) 25-8•3=51 32)9+4•5-3=17 should be presented as:

9+4•5-3=17 That's one equation per line.

Now, ask yourself how we could use grouping symbols (parentheses) to make the equations true.

If done (evaluated) exactly as shown, following order of operations rules,

25-8•3=51 is false. We get 25 - 24 = 51 (false). But look what happens if we enclose 25-8 in parentheses:

(25-8)*3 = 51. This is 17*3 = 51 (true).

Now let's move on to the other equation: 9+4•5-3=17. If evaluated exactly as shown, we get 9 + 20 - 3, or 26, which does not equal 17.

What if we were to enclose 9+4 in parentheses: (9+4)*5 - 3 = ?

13*5 - 3 = 62, and is is therefore is not correct.

Let's try (9+4)*(5-3). That'd be 13*2, or 26, not 17.

Please, before we move on, check to ensure that you have copied down "9+4•5-3=17" correctly. Be sure to leave out the Problem Number (32).

answer: b.48 for

step-by-step explanation:

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.