Step-by-step explanation:
x⁴+3x³-4x²=0
x²(x²+3x-4)=0
x²+3x-4=0
x²+4x-x-4=0
x(x+4)-1(x+4)=0
(x+4)(x-1)=0
x=-4 or 1
x can't be negative
therefore x=1
x+4=1+4=5
Answer:
Whaaaa?
Step-by-step explanation:
lol ;)
Answer:
For 2 cookies, that would be 70 calories, 8 cookies would be 280 calories and 10 cookies would have a total of 350 calories.
Step-by-step explanation:
For every 1 cookie, there is 35 calories in the cookie. So, 35 x 8 is 280 and 35 x 10 is 350. Hope this helps! :D
Answer:
7
Step-by-step explanation:
If one of the cards is removes and the mean average of the remaining four number cards is 6, then their sum is 
The sum of all five cards is
Since 
then the card with number 7 is removed.
Answer:
OK, so 17 feet is 17x12= 204+8= 212 inches is the length
And 11 feet is 11x12= 132+8= 140 inches is the width.
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The area of a rectangle is LxW= 212x140= 29,680 square inches.
Now, we are talking about SQUARED numbers, right? So, 1 foot = 12 inches and 1 square foot = 12^2=144 inches.
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We said the room is 29,680 square inches, and 29,680/144= 206.11 and we round off to the nearest foot = 206 square feet.
And the cost?: 206x2.89= $595.34
