Answer:
the value of cos 0 is 7
Step-by-step explanation:
because you have to times it twice
You have too many numbers we only need 3
Let x = the amount of money he invests at 9%
and y = the amount of money he invests at 3%
y = x - 1400
0.09x + 0.03y = 198
x - y = 1400
9x + 3y = 19800
3x - 3y = 4200
9x + 3y = 19800
12x = 24000
x = 2000
y = 600
$2000 invested at 9% interest
and $600 invested at 3% interest.
Answer:
-30
Step-by-step explanation:
( Add 2 on both sides)
( Multiply by -3 on both sides)

<u>Verify:</u>
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(Correct<u>)</u>
Answer:
a 6,3 b 2,3 c 2,-1 d 6,-1
Step-by-step explanation:
flip the signs