Please explain your answer as well

Mathematics

2 answers:

Rudiy273 years ago

7 0

Answer:

23 bby <3

Step-by-step explanation:

eimsori [14]3 years ago

6 0

Answer:

The Pythagorean theorem

a^2+b^2=c^2

c^2=8^2+15^2

c^2=64+225

c^2=289

c= the square root of 289

c=17

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Answer:

x = 40°

Step-by-step explanation:

Given that ∠SRT ≅ ∠STR

Then ∠STR = 20

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Now we solve for x:

$4x + 20 = 180\\\\Subtract\;20\;from\;both\;sides\;of\;the\;equation\\\\4x + 20 - 20 = 180 - 20\\4x = 160\\\\Divide\;both\;sides\;of\;the\;equation\;by\;4\\\\\dfrac{4x}{4}=\dfrac{160}{4}\\\\x = 40$