3 years ago

Y =f(x)=-3^x Find f(x) when x =1

Mathematics

1 answer:

Dominik [7]3 years ago

3 0

Replace the x in -3^x by 1

Answer is -3^1 = -3

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3 years ago

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3 years ago

Jackson’s age was 2/5 of the age he will be 20 years from now 7 years ago. How old is Jackson now?

bonufazy [111]

<h3>The present age of Jackson is 25 years old</h3>

<em><u>Solution:</u></em>

Let the present age of Jackson be "x"

Therefore

Jackson's age 7 years ago = x - 7

And, Jackson's age after 20 years = x + 20

From given question,

Jackson’s age was 2/5 of the age he will be 20 years from now 7 years ago

$\frac{2}{5} \times (x + 20) = x - 7\\\\2(x + 20) = 5(x - 7)\\\\2x + 40 = 5x - 35\\\\5x - 2x = 40 +35\\\\3x = 75\\\\Divide\ both\ sides\ by\ 3\\\\x = 25$

Thus present age of Jackson is 25 years old

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3 years ago

(8x-20) (5x+37) apply angle theorem find x

Studentka2010 [4]

Value of x = 19

(8x - 20) = (5x + 37)
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3 years ago

Solve the following quadratic equations using factoring.<br><br> C. X^2-10=9x

boyakko [2]

we can easily solve this one by splitting theiddle term

x2 - 9x -10

x2 -10x + x - 10

x(x - 10) 1( x - 10)

(x + 1) (x-10)

x = -1 or 10

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2 years ago