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3 years ago

BRAINLIESTTT ASAP! MATH EXPERT PLEASE HELP ME :)

Mathematics

2 answers:

kirza4 [7]3 years ago

3 0

Answer:

It's true.

Explanation:

2(segment ST) = RT

divide both sides by two

ST = RT/2

You would have two equal halves of RT. One half equals RS. The other half equals ST.

Here's a rough picture of the line.

R _____________S_____________ T

S is in the middle of the line which makes it the midpoint.

It's true. S is the midpoint of RT.

Elena-2011 [213]3 years ago

3 0

Answer:

True

Step-by-step explanation:

The problem gave us that 2ST = RT.

Therefore if we draw it out, we can can come up with the equations:

RT = RS + ST

RT = 2ST

∴ RS + ST = 2ST , by some thereom i forgot the name of

RS + ST = ST + ST

RS = ST

By definition of a midpoint, S must be the midpoint.

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2 years ago

Can anyone explain how to do any of this?

pashok25 [27]

Answer:

qn 10. 15mn² - 23m²n +4m³

Step-by-step explanation:

1. distribute 4m through the parenthesis

8mn² - 12m²n + 4m³ - 2n(5m² - 3nm) + nm(n-m)

2. use the commutative property to reorder the terms

8mn² - 12m²n + 4m³ - 2n(5m² - 3mn) + mn(n - m)

3. distribute -2n through the remaining parenthesis

8mn² - 12m²n + 4m³ -10m²n + 6mn² + mn² - m²n

4. collect like terms

8mn² + 6mn² + mn² - 12m²n - 10m²n - m²n + 4m³

5. complete bodmas

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that's is how you do it so the answer is

15mn² -23m²n + 4m³

5 0

3 years ago