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nikklg [1K]
2 years ago
10

It 3x - 2 = 7, then 3x = 9 is an example of the ?

Mathematics
1 answer:
vova2212 [387]2 years ago
3 0

Answer:

Addition Property of Equality

Step-by-step explanation:

So we had:

3x-2=7

And then we got:

3x=9

We did this by adding 2 to both sides of the equation. When we added 2, the left side cancelled and the right side equated to 9:

(3x-2)+2=(7)+2\\3x=9

Since we added 2 to both sides, this is an example of the addition property of equality.

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Step-by-step explanation:

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Stefan and his 2 friends want to share 16 muffins equally. Will each friend get more than or less than 5 whole muffins? Explain
mash [69]
Stefan and his 2 friends will each get 5 muffins each with one left over. I know my answer is correct because 16÷3=5 remainder 1
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What two mixed numbers have a sum of 3
barxatty [35]
The answer is one and 1/3 + one and 2/3.
To get this answer, we must first need to understand improper fractions are (i guess) an 'uglier' version of mixed numbers because improper fractions can be converted to mixed numbers and vice versa making them pretty much the same thing. 
So an improper fraction is when the numerator is bigger than denominator.
(we also need to understand that for example: 12/3 is the same as 12 divided by 3)
So, what divided by what gives 3? Well 3*3=9 so if 9 is divided by 3 it will equal 3. Therefore we have an improper fraction of 9/3.

The basics of addition in fraction is when the numerator is the same, just add the top. So for simplicity's sake we will make out sum where both improper fraction's denominator is 3. So... what plus what equals 9? 4+5. 4 and 5 are chosen because both numbers are bigger than 3.
so now we have:
4/3 + 5/3
Now just turn the improper fraction into a mixed number and we get the answer of: one and 1/3 + <span>one and 2/3, which equals 3</span>
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3 years ago
Write each expression using a positive exponent.
Dmitriy789 [7]

aswer is eieeee swww

8 0
3 years ago
Find the area of this shape in two different ways. Numbers: 1m, 2m, 3m, and 4m. (See picture if you don’t understand.)
qaws [65]

Answer:

A = 10m^2

Step-by-step explanation:

Divide the figure into 3 smaller figures (a triangle, a rectangle, and a square). Then, solve for the area of each composite figure.

A of triangle = (2 x 2)/2 = 2

A of rectangle = 4 x 1 = 4

A of square = 2 x 2 = 4

A of figure = 2 + 4 + 4 = 10m^2

Another way to solve this is to find the area of the entire figure plus the area of a triangle. This would look like A = 3 x 4 = 12. But, since the extra triangle area is included, we must subtract this from the total area.

A of triangle = (2 x 2)/2 = 2

A of figure = 12 - 2 = 10m^2

7 0
2 years ago
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