Definitons: 1) Expand (multiply over brackets) 2) collecting like terms 3) rearranging 4) solving equations

Mathematics

2 answers:

Scilla [17]4 years ago

8 0

Collecting like terms is to simplify terms in expressions in which the variables are the same.

Rearranging is to change the position for example changing the place of the = sign to change the meaning of the equation.

Solving equations is to find the solution of the equation

Kitty [74]4 years ago

5 0

Answer:

I'm not sure sorry

Step-by-step explanation:

I need points I'm struggling too

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Please answer correctly

vekshin1

Theoretical: the result is based on the number of outcomes.

7 0

4 years ago

If a sample of pure sodium has a mass of 8.2 grams and sodium has an average atomic mass of 22.99 g/mol, how many sodium atoms a

Nonamiya [84]

8.2 grams = 1 mol
Na ________
22.99 grams

First multiply the value of 8.2 to 1. Then divide by the value of 22.99 to determine the number of moles of sodium present in the 8.2 gram sample.

Then use the following equation to solve for sodium atoms.

Number of moles of Na • Avogadro Number = Number of sodium atoms.

0.3566782 • (6.02 X 10^23). = 2.1472 X 10 ^ 23. Or 2.15 X 10 ^ 23.

The answer is the second option - 2.15 X 10 ^ 23.

7 0

4 years ago

Plzz answer fasttttt

Alja [10]

Answer:

45 square centimeters.

Step-by-step explanation:

Length(L) = 9 cm

breadth (b) = 5 cm

Area of the rectangle

= L * b

= 9 * 5