It will take layla 11 nigths
1) <span>B)3x+6y=22
6x+12y=44
because the equations are equivalent to each other
2*(3x+6y=22) -----> 6x+12y=44
2) </span><span>5x+10y=15 should be multiplied by -2, to get 5x*(-2)=-10x, and x then can be eliminated
</span><span>A)-2</span>
Answer: The answer is: " 2 " .
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→ Kami has read the book "<u> 2 (two) </u>" times.
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Step-by-step explanation:
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Let "J" represent the number of times julia has read the book.
Let "K" represent the number of times Kami has read the book.
J = 6 ;
J = 3K ;
Solve for "K" ;
J = 6 = 3K ;
→ 6 = 3K ;
↔ 3K = 6 ;
Divide each side of the equation by "3" ;
to isolate "K" on one side of the equation; & to solve for "K" :
→ 3K / 3 = 6 / 3 ;
to get:
K = 2 .
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The answer is: " 2 " .
→ Kami has read the book "<u> 2 (two) </u>" times.
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2 2(5) 10
---- = --------- = -------
5 5(5) 25
hope this helps :)
Answer:
Ellen invested $60 and Bob invested $140
Step-by-step explanation:
let the two amounts invested by 3x and 7x
(notice 3x : 7x = 3 : 7 )
then 3x + 7x = 200
10x = 200
x = 20
then 3x = 3(20) = 60
and 7x = 7(20) = 140
60+140=200
