How do you solve geometry proofs?

Mathematics

1 answer:

EastWind [94]3 years ago

7 0

Write the Theorem statement that needs to be proved, and state the givens.

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What is the nth term rule of the linear sequence below?

hoa [83]

Answer:

$a_n=-5-2(n-1)$

Step-by-step explanation:

Since this sequence starts with -5 and decreases by 2 with each term, its rule would be:

$a_n=-5-2(n-1)$

Hope this helps!

7 0

3 years ago

sketch and label all possible rectangles with a perimeter of 30 cm and sides whose lengths are whole numbers

Ivahew [28]

Its asking you to draw rectangles with sides that equal 30 cm for example

3 0

3 years ago

Read 2 more answers

-5/2a+ 5=25...............,....................................

sveta [45]

$\text{Hey there!}$

$\mathsf{-\dfrac{5}{2}a+5=25}$

$\text{\bf{SUBTRACT}}\mathsf{\ by\ 5\ on\ your\ sides}\\\mathsf{-\dfrac{5}{2}a+5-5=25-5}\\\\\mathsf{Cancel\ out: 5-5\ because\ it\ gives\ you\ 0}\\\\\mathsf{Keep: 25 - 5\ because\ it\ helps\ us\ solve\ for\ a}\\\\\mathsf{25-5=20}\\\\\mathsf{New\ equation:- \dfrac{5}{2}a=20}$

$\text{\bf{MULTIPLY}}\mathsf{\ \dfrac{2}{-5}\ on\ your\ sides}\\\\\mathsf{\dfrac{2}{=5}\times\dfrac{-5}{2}a=\dfrac{2}{-5}\times20}\\\\\mathsf{Cancel\ out: \dfrac{2}{-5}\times\dfrac{-5}{2}\ because\ it\ gives\ you\ 1}\\\\\mathsf{Keep: \dfrac{2}{-5}\times20\ because\ it\ gives\ you\ the\ value\ of\ a}\\\\\mathsf{\dfrac{2}{-5}\times20=-8}$