3 years ago

HELP PLS!

Mathematics

1 answer:

Zigmanuir [339]3 years ago

5 0

Answer:

x = 2 is the correct answer :)

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Use special right triangles to solve for the exact value of x

Savatey [412]

Pythagorean theorem, a^2 + b^2 = c^2
5 squared is 25, 8 squared is 64, square root of 89 is 9.43 thus the hypotenuse is 9.43, correct me if I'm wrong but that is what I got

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olchik [2.2K]

Answer:

multiply 3 by 2 and add 1 to get 7

Step-by-step explanation:

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deff fn [24]

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3 years ago

Which expression is equivalent to *picture attached*

Sedbober [7]

Answer:

$\sum_{n=3}^{20}(n(n+1))=\sum _{n=3}^{20} n^2+ \sum _{n=3}^{20} n$

Step-by-step explanation:

Given expression : $\sum_{n=3}^{20}(n(n+1))$

Solving further :

$\Rightarrow \sum_{n=3}^{20}(n^2+n)$

$\Rightarrow \sum _{n=3}^{20} n^2+ \sum _{n=3}^{20} n$

So, $\sum_{n=3}^{20}(n(n+1))=\sum _{n=3}^{20} n^2+ \sum _{n=3}^{20} n$

So, The given expression is equivalent to Option A

So, Option A is the answer

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3 years ago

Determine if (-2,5) is a solution of Of 3x+4y=14

Serggg [28]

Well that's easy. Just plug in the numbers: 3*(-2)+4*(5)=14. So yes the solution is correct.

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