Multiply 1st equation by 5
-5x + 10y = -20
now you have
-5x + 10y = -20
5x - 10y = 20
---------------------add
0 + 0 = 0
0 = 0
answer
C. the system has infinitely many solutions
Answer:
Simplified: C/2 -4
Step-by-step explanation:
the "/" means fraction
answer:
423.5
step1.
you find the value of 3% by dividing over 100 because percentage is over 100 so 3/100
step2
multiply by $350
so 3/100×350=10.5
step3
we are told the investment is for 7years so we multiply 10.5 by 7 because 10.5 is only for 1year
10.5×7=73.5
step4
add the 73.5 to the 350 then you have your answer
Answer:cot t = 1.875
but sin²t + cos²t = 1 ⇔ cos²t = 1 - sin²t
⇔cos t = 
but t is a quadrant III angle => cos t = 
=> cot t = 
Step-by-step explanation: