Answer:
Step-by-step explanation:
So the equation is 1/x+1/y=1/7
Multiplying both sides by 7xy, we get
7y+7x=xy
So x+y=xy/7
Or x=-y+xy/7
So x can be:
1,2,3,4,5,6
So, if 10 cookies cost 2 dollars multiply that by 2 to get 20 cookies ( 4 dollars )
Then divide 2 in half because you need 5 more cookies to get the total 25.
( 1 dollar. )
So that will cost 5 dollars! I did the math myself.
I hope this helped!
I would appreciate it if you gave me a Thanks and a brainliest (:
Answer:
the width if 16 feet the length is 32
Step-by-step explanation:
Answer:
$618.80
Step-by-step explanation:
If the tablet is on sale for 15% off, you pay 85% of the original price.
85% of $700 is
700(0.85) = $595
You pay 4% sales tax on $595, which is
$595(0.04) = $23.80
The total cost you pay is $595 + $23.80 = $618.80
X+1=
To get rid of the square root, put it in the power of 2.
(x+1)^2=3x+7--factor (x+1)^2
x^2+2x+1=3x+7---> solve
