-2x -9y = -25
-(-4x -9y =-23)
2x = -2
x = -1
-2(-1) -9y = -25
2 - 9y = -25
-9y = -25 -2
-9y = -27
y = 3
(-1,3)
Answer:
Cara:108
Step-by-step explanation:
John: x number of cards
Cara: 12 times x number of cards(she has 12 times more cards than John)
Cara+John=117 cards
Cara has 12×9 cards, so she has 108 cards.
Hope this was helpful :)
Answer:
A
Step-by-step explanation:
We know that identity:
cos^2x+sin^2x=1.
From that we have:
cos^2x=1-sin^2x.
So it is:
cos^2x-sin^x=(1-sin^2x)-sin^2x=1-2sin^2x.
And this is A).
B) is not treu because cos^2 is not sin^2x+1
C) is not true because cos^2x-sin^x=1 is false.
D) is not treu because cos^2x is not sin^2x-1
Answer:
Step-by-step explanation:
5x + 1 is a SUM.
3y is a TERM.
9(5x + 1) is a PRODUCT.
9 is a FACTOR of 9(5x + 1).
5x + 1
---------- is a QUOTIENT.
3y
5 is the COEFFICIENT of x.
