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3 years ago

С E A B G 77° D plz help.me

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

4 0

90°-77°=13°.

the answer is 13°

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If g(x)=3x-11, what is x is g(x)=289

Liula [17]

Answer:x=100

Step-by-step explanation:

Since you know that g(x)=3x-11 all you have to do is substitute that into g(x)=289. So you get 3x-11=289. To get x you have to add 11 on both sides.

3x-11=289

+11 +11

----------------

3x = 300

Divide 3 on both sides to get x by itself

3x =300

---- -------

3 3

x=100

8 0

3 years ago

Help please !!!!!!!!!!!!!!!!!!

Hunter-Best [27]

Answer:

n = 59

Step-by-step explanation:

There's definitely a better way, i just did math randomly but here goes:

First i squared both sides. which gets you:

$(\sqrt{n+5}-\sqrt{n-10} )(\sqrt{n+5}-\sqrt{n-10} )=1^2\\\\n+5 -2\sqrt{(n+5)(n-10)} +n-10=1$

Cleaning this up gives you:

$2n-5 -2\sqrt{(n+5)(n-10)}=1$

Now move everything to the other side so we can square this equation again

$-2\sqrt{(n+5)(n-10)}=-2n+6$

Divide both sides by -2

$\sqrt{(n+5)(n-10)}=n-3$

square again

$(n+5)(n-10)=(n-3)^2\\n^2-5n-50=n^2-6n+9$

subtract n^2 from both sides, add 6n, and add 50

$-5n-50=-6n+9\\n-50 = 9\\n=59$

Put this back into the equation and you get a correct answer!

sqrt(59 + 5) = sqrt(64) = 8

sqrt(59-10) = sqrt(49) = 7

8 - 7 = 1

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4 years ago

С E A B G 77° D plz help.me​

С E A B G 77° D plz help.me