2 years ago

Help click the picture to make it bigger!!! ASAP

Mathematics

2 answers:

liraira [26]2 years ago

7 0

Answer: A and D

The blue line has a slope of 2

irina [24]2 years ago

3 0

Answer:A and B

Step-by-step explanation:

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2 years ago

What is the product?

Marina86 [1]

Answer:

$\frac{2}{k+2}$

Step-by-step explanation:

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Help me on this question, I'll give brainlist for the correct answer.

german

Answer:

Step-by-step explanation:

The first expression has value 12

The second expression has value -6

The third expression has value

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Find the time required for an object to cool from 280°F to 220°F by evaluating the following where t is time in minutes. (Round

blsea [12.9K]

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Answer:

5.8496 min

Step-by-step explanation:

$\displaystyle t=\frac{10}{\ln{2}}\int_{220}^{280}{\frac{1}{T-100}}\,dT=\frac{10(\ln{(280-100)}-\ln{(220-100)})}{\ln{2}}=\frac{10\ln{(3/2)}}{\ln{2}}\\\\\boxed{t\approx5.8496\quad\text{min}}$

Modern calculators can perform integration with high accuracy. This one gives the same result.

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