Ella spent her whole allowance of $2.00, plus the 16¢ she had left over from last week, onbubble gum. If the pieces of gum had b
een a penny cheaper, she would have received threemore pieces than she did. How many pieces did she actually buy?
1 answer:
If x is the first price of bubble gum and
y is the number of prices she bought
$2.00+16 cents= 216 cents
216/x=y
If the first price will be 1 penny cheaper the price will be (x-1) and will get 3 more pieces of candy so will have y+3
216/(x-1)=y+3
Since both 216/x=y and 216/(x-1)=y+3 can be true in the same time this is a system of equations that will help us find y.
If 216/x=y then x=216/y
Substitute x in the other equation
216/(216/y)-1=y+3
y^2 +3y-648=0
And y could be 24 pieces and 27 pieces
Check
216cents /24 pieces= 9 cents per piece
Cheaper by 1 penny will be 8 cents
216//8=27 pieces that are 3 more than 24
Same logic for 27 pieces bought
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D is false.
-1 = -(-1)
When you negate the negative on the left, you get a positive 1, not a negative 1.
Answer:
m=17
Step-by-step explanation:
Complementary means they add to equal 90 degrees.
1) 90-A=36
2)36=2x+2
3) Subtract 2 from both sides, 34=2x
4) Divide by 2 17=x
Your pfp. *kneels down*
will you marry me, genshin player?
The relevant rules of exponents are
.. (t^a)^b = t^(a·b)
.. t^a·t^b = t^(a+b)
You have
.. (t^-4)^-9·t^2
.. = t^((-4)*(-9) +2)
.. = t^38 . . . . . . . . . . . selection C
9 * 25 = 225
225 - 6 = 219
There are 219 chairs left.
