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lakkis [162]
3 years ago
6

X=√

rt{15 - 2 \times } " alt="x = \sqrt{15 - 2 \times } " align="absmiddle" class="latex-formula">
15-2x
Mathematics
1 answer:
Rus_ich [418]3 years ago
5 0
The answer:  " x = 5 " .
____________________________________
Explanation:
____________________________________
Given:   "  x = √(15 <span>− 2x) " ;  Solve for "x" ; 
____________________________________
  "Square" each side of the equation:
____________________________________
</span>      → (x)²  =  [√(15 − 2x) ] ²  ; 

  →   x  =  15 − 2x   ;

Now, add "2x" to each side of the equation:

 →   x + 2x = 15 − 2x + 2x  ;

 →    3x = 15 ; 

Now, divide each side of the equation by "3" ; 
     to isolate "x" on one side of the equation; & to solve for "x" ; 

 →    3x / 3 = 15 / 3  ; 

 →    " x  =  5 " .
____________________________________________________
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D=9 Tables

Step-by-step explanation:

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3 years ago
Karen is typing a 4,000 word essay. She can type at about 30 words per minute. If she types for 45 minutes on Monday and 55 minu
horrorfan [7]

Answer:The number of words that she would still have to type to finish her essay is 1000

Step-by-step explanation:

Karen is typing a 4,000 word essay. She can type at about 30 words per minute. This means that if her rate remains constant, the total number of minutes that it will take her to finish would be

4000/30 = 133.33 minutes.

If she types for 45 minutes on Monday, it means that the total number of words that she typed on Monday would be

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If she types for 55 minutes on Tuesday, it means that the total number of words that she typed on Tuesday would be

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8 0
3 years ago
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Read 2 more answers
A water tank hols 540 galloms but is leaking at a rate of 4 gallons per week a second water tank holds 720 gallons but is leakin
Murrr4er [49]
Let after n week both tanks have same quantity of water .

for first tank
=============
tank hold 540 gallon of water ,
leaking of water 4 gallon /week
so, in n week water leak from the tank =4× n = 4n

now, after n week quantity of water in the tank = 540 -4n

for second tank
==============
quantity of water in the tank =720 gallon
leaking of water at the rate = 7gallon/week
so, after n week water leak from the tank = 7× n =7n

after n week quantity of water rest in the tank = 720 -7n

now ,
according to question ,

water in first tank = water in second tank
540 -4n = 720 -7n

7n -4n = 720 -540

3n = 180

n = 60

hence , after 60 week both tank have same quantity of water.
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Step-by-step explanation:

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8 0
2 years ago
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