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belka [17]
3 years ago
11

Can someone please help me with math.

Mathematics
1 answer:
Alex17521 [72]3 years ago
6 0

Answer:

A. 85

Step-by-step explanation:

They are congruent angles, or the same.

Therefore, the answer is 85

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The sum of the interior angles of a pentagon is _______. 180° 270° 360° 540°
monitta

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The answer is 540°

Step-by-step explanation:

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3 years ago
How do you find the original price if the percent of discount is 25% in the sales price is $40
kondaur [170]

25% — $40

100% — $40 * 4 = $160

The original price is $160.

3 0
2 years ago
A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)e^kt, where m(0) is the initial mass and k is a n
forsale [732]

Answer:

mean life = 8264.5 s

Step-by-step explanation:

k = - 0.000121

The relation is given by

m = mo e^{kt}

Now, the mean life is the life time for which the sample retains.

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The relation between the mean life and the decay constant is

\tau =\frac{1}{k}\\\\\tau = \frac{1}{0.000121} = 8264.5 seconds

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3 years ago
Michael buys a ball for 5.50 and a flashlight for 3.65. If he has 10.00 how much change we’ll he receive
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.85 cents

Step-by-step explanation:

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2 years ago
Question 5 of 7 -
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