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aalyn [17]
3 years ago
10

4 = + 8 + 2t solve for t

Mathematics
1 answer:
olchik [2.2K]3 years ago
3 0
T= 2

Explanation:

Since this equation has a positive answer u will have to take away.

So 8-2 which is 6. Since the answer gives us a 4. We do 6-4 which is 2. And bc of this answer it proves that t is 2.

Hope this helps!
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EGF and GFH are a linear pair, m EFG = 4n + 15, and m GFH = 5n + 39. what are m EFG and m GFH?
Tasya [4]

The angles of ∠EFG  and ∠GFH are 71° and  109°

<h3>What are linear pair angles?</h3>

Linear pair of angles are formed when two lines intersect each other at a single point.

In other words, a linear pair of angles is a pair of adjacent angles formed when two lines intersect each other.

Linear pair angles are supplementary. This means the sum of  a linear pair angles is 180 degrees.

Therefore,

∠EFG + ∠GFH = 180

Therefore,

∠EFG = 4n + 15

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4n + 15 + 5n + 39 = 180

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n = 126 / 9

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Hence,

∠EFG = 4n + 15 = 4(14) + 15 = 71°

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learn more on linear pair angles here: brainly.com/question/28264317

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2S=(1+799)+(3+797)+(5+795)+\cdots(795+5)+(797+3)+(799+1)

so that we are basically adding 400 copies of 800, and from there we can find the value of the sum right away:

2S=400\cdot800\implies S=160,000

###

We could also make use of the formulas,

\displaystyle\sum_{i=1}^n1=n

\displaystyle\sum_{i=1}^ni=\dfrac{n(n+1)}2

We have

S=\displaystyle\sum_{i=1}^{400}(2i-1)=2\sum_{i=1}^{400}i-\sum_{i=1}^{400}1=400(400+1)-400=400^2=160,000

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Step-by-step explanation:

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