in the Pythagorean theorem, the two must always be substituted for the side lengths, not a short side true or false

Mathematics

1 answer:

alina1380 [7]3 years ago

7 0

The two what? This question needs more context

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What is the solution of the matrix equation?

Alenkasestr [34]

Answer:

Step-by-step explanation:

$\left[\begin{array}{ccc}1&1\\2&3\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] =\left[\begin{array}{ccc}8\\36\end{array}\right] \\\\\left[\begin{array}{ccc}x+y\\2x+3y\end{array}\right] =\left[\begin{array}{ccc}8\\36\end{array}\right]\\.\qquad\qquad\Downarrow\\\left\{\begin{array}{ccc}x+y=8&|\text{multiply both sides by (-2)}\\2x+3y=36\end{array}\right$

$\underline{+\left\{\begin{array}{ccc}-2x-2y=-16\\2x+3y=36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad y=20\\\\\text{Put the value of y to the firast equation:}\\\\x+20=8\qquad\text{subtract 20 from both sides}\\x=-12\\\\\boxed{(-12,\ 20)}$

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3 years ago

1.6 hours to 0.95 hour increase and decrease?? also show the work.. thxs!

notka56 [123]

Answer:

Decrease

Step-by-step explanation:

If you look at the numbers in general 1.6 has a one in it. Meanwhile 0.95 is part of one. Think of it as money. Which would you rather have $1.60 or 0.95 cents.

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3 years ago

Please Help!!!

lesya692 [45]

Answer:

No, the clay will not pour out easily. I know this because the angle of the truck bed is less than 50°, which is the minimum angle for easy pouring.

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that ...

Sin = Opposite/Hypotenuse

If α represents the angle of the truck bed, this means ...

sin(α) = 9/15

We can find α using the inverse sine function: