Solve the system using the substitution method: 3x + 5y = -10 X - 5y =-10

Mathematics

1 answer:

inn [45]3 years ago

4 0

<u>Answer:</u>

Point Form:

(−5,1)

Equation Form:

x=−5, y=1

<u>Step-by-step explanation:</u>

Solve for the first variable in one of the equations, then substitute the result into the other equation.

1. x=5y−10

2. 20y−30=−10

3. y=1

4. x=−5

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Since $T(0) = 185$ , we solve for C:
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But choose Positive because T > 75. Temp of turkey can't go under.

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(b)

$T(t) = 75 + 110e^{(1/30)\ln(15/22)t} = 75 + 110(15/22)^{t/30} \\
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25 = 110(15/22)^{t/30} 
\frac{25}{110} = (15/22)^{t/30} \\
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