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

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Find a mathematical model that represents the statement. F varies directly with s and inversely as the square root of d. f=6 when s=2 and d=9

Form three equivalent fractions for 3/4 by multiplying by 5/5 7/7 3/3

Subtract simplify, if possible 7 1/7-2 6/11

Which is the population standard deviation of the data set: 10,10,10,10, 10? a. 0 b. 1 c. 10 d. 5

Brainliest for whoever gets this correct Paint a wall that measures 2.1 m by 5.2 m. A tin of paint covers 3.5 m? If the tin contains exactly 0.5 litres of paint, and all other measurements are correct to 1 d. p.

The temperature of a pot of water fell from 72°F to 36°F in 4 minutes. find the average temperature per minute

100 birthday candles in 5 bags is proportional to 300 candles in how many bags?

Stevie has some marbles Freddie has twice as many marbles as Stevie Danny has 5 more marbles than Freddie In total they have 55 marbles How many marbles does Danny have?

Calculate the rf value for the reactant b spot. estimate the ruler to the nearest tenth, report the answer using two significant figures.

A dice is rolled 8 times. find the probability of p (getting at least 7 even numbers). a.) 1/256 b.) 9/256 c.) 1/32 d.) 1/16