3 years ago

Prove that : please slove it

Mathematics

1 answer:

maw [93]3 years ago

7 0

Answer:

x is all reall numbers

(∞,-∞)

Step-by-step explanation:

Multiply both sides of the equation by $50 X 7x^{x}$ so it will be

$7x^{x+2} +7x^{x} =(50X7x^{x} )X1$

then when we solve for x it will be 0=0 / Since 0 = 0 , the equation will always be true for any value of x is All real numbers

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Lesson 2 semester B exam algebra 1B unit 7

Elodia [21]

<h2>Answer:</h2>

720 pounds

<h2>Step-by-step explanation:</h2>

Initially, we have that the amount of algae in the pond is $90pounds$ . Every four hours the amount of algae doubles. If we called $t$ the time and $W$ the amount of algae, we have that:

$At \ t=0 \ hours, \ w=90 \ pounds \\ \\ At \ t=4 \ hours, \ w=2(90)=180 \ pounds \\ \\ At \ t=8 \ hours, \ w=2(180)=360\ pounds \\ \\ At \ t=12 \ hours, \ w=2(360)=720 \ pounds$