While on summer vacation, Mr. Duda traveled about 230 miles to a city near Dallas in 3 hours. How many miles
1 answer:
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Answer:
x = , y = 6
Step-by-step explanation:
5x + y = 7 → (1)
20x + 2 = y → (2)
Substitute y = 20x + 2 into (1)
5x + 20x + 2 = 7
25x + 2 = 7 ( subtract 2 from both sides )
25x = 5 ( divide both sides by 25 )
x = =
Substitute this value into (2) and evaluate
20( ) + 2 = y
4 + 2 = y , so
y = 6
value of at x=8 is
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<u>Step-by-step explanation:</u>
here we need to evaluate 12 + x to the power of 4 - 6 when x = 8 or , where x=8 . Let's find out:
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Putting x =8 :
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Splitting 8 to power 4 into 8 to power 2 ( 2 times )
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⇒
⇒
⇒
⇒
Therefore , value of at x=8 is
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