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Stells [14]
3 years ago
12

5^{x+1}-5^{x+2}=-2500. Find x

Mathematics
1 answer:
vladimir1956 [14]3 years ago
4 0

Answer:

x is 3

Step-by-step explanation:

{5}^{(x + 1)}  -  {5}^{(x + 2)}  =  - 2500 \\

divide all sides by -1:

{5}^{(x + 2)}  - 5 {}^{(x + 1)}  = 2500

from law of indices:

( {5}^{x} . {5}^{2} ) - ( {5}^{x} . {5}^{1} ) = 2500

factorise out 5^x:

{5}^{x} ( {5}^{2}  -  {5}^{1} ) = 2500 \\  {5}^{x} (20) = 2500 \\  {5}^{x}  = 125 \\  {5}^{x}  =  {5}^{3}  \\ x = 3

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Change at least one number in the table so that it DOES represent a function.
almond37 [142]

Answer:

change 2 to 4

and 1 to 5

1 --> 5

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4 --> 20

5 --> 24

Step-by-step explanation:

Function means you can have one input for evry one output

so you have to change the 2 and 1 to diffrent numbers like 4 and 5

so now evey imput has their own out put

befor input one it had 5 and 24

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3 years ago
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
I need help plzz its due TODAYYY
kobusy [5.1K]

Answer:

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3 0
3 years ago
Kaylah's family has completed 70% of a trip. They have traveled 35 miles. How far is the trip?
Lady_Fox [76]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
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Answer:

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