Answer:
-21
Step-by-step explanation:
2^2 equals 4, multiplied by 2 is 8, subtracted from 7(2) equals -6, sutracted from 15 gives up -21
Answer:
<em> = n² + 4n ; n = 11 </em>
Step-by-step explanation:
= 
[2 
+ (n - 1)d]
~~~~~~~~~
= 5
d = 7 - 5 = 2
= [ 2(5) + 2(n - 1)] = ( 8 + 2n ) = 4n + n²
<em> = n² + 4n</em>
n² + 4n = 165
n² + 4n - 165 = 0
(n + 15)(n - 11) = 0 ( n ≥ 0 ) ⇒ <em>n = 11</em>
Answer:
<h2>L=8in</h2><h2>W=5in</h2>
Step-by-step explanation:
Step one:
given data
we are told that the border/perimeter of the yellow ribbon is 26in
let the width be x
W=x
and the lenght
L=x+3
Step two:
Required
The expression for the perimeter to find the dimensions of the yellow ribbon given the above condition.
we know that the perimeter of a rectangle is given as
P=2L+2W
26=2(x+3)+2x---------This is the expression required
26=2x+6+2x
26=4x+6
26-6=4x
20=4x
divide both sides by 4
x=20/4
x=5in
The width is 5in
The length is
L=x+3
L=5+3
L=8in
You collect the “like terms” and simplify which would bring you down to 1789b which is equivalent to 1345b. Then you move the “variable” to the “left-hand” side and change its sign which would give you 1789b-1345b=0. Then again collect the “like terms” which would bring you 444b=0. Then you divide the both sides of the equation by 444 and it would mean b=0. So your answer is b=0
Answer:
.24
Step-by-step explanation:
One pack of marbles cost $0.24
