3 years ago

Need help. PLEASE! I dont understand

1 answer:

5 0

Briana is wrong. The 2 line cannot be parallel since their slopes are not the same. The slope of one line is 2 and the slope of the other is 2.5.

The other student is right. Just replace (9, 21.5) in both equations and it will satisfy both equation.

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y = amount invested at 9%

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put the system of linear equations into standard form

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x + y = 20287

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3 years ago

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$\sin\theta= \frac{4}{5} 
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\\\sin^2\theta+\cos^2\theta=1
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$\theta \in II \Rightarrow \cos\theta\ \textless \ 0 \Rightarrow \cos\theta=-\frac{3}{5}$

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3 years ago

Need help. PLEASE! I dont understand ​

Need help. PLEASE! I dont understand