Which number comes next in the pattern write your answer in the box below 8.80,8.45,8.10,7.75 --------

Mathematics

2 answers:

eimsori [14]2 years ago

7 0

Find the difference between each number:

8.80 - 8.45 = 0.35

8.45 - 8.10 = 0.35

8.10 - 7.75 = 0.35

The next number in the series is 0.35 less then the previous number.

Next number = 7.75 - 0.35 = 7.40

Answer: 7.40

viktelen [127]2 years ago

3 0

Answer:

Step-by-step explanation:

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The half-life of cesium-137 is 30 years. Suppose we have a

VMariaS [17]

(a) If $y(t)$ is the mass (in mg) remaining after $t$ years, then $y(t) = y(0) e^{kt}=100e^{kt}.$

$y(30) = 100 e^{30k} = \frac{1}{2}(100) \implies e^{30k} = \frac{1}{2} \implies k = -(\ln 2) /30 \implies \\ \\
y(t) = 100e^{-(\ln 2)t/30} = 100 \cdot 2^{-t/30}$

(b) $y(100) = 100 \cdot 2^{-100/30} \approx \text{9.92 mg}$

(c)
$100 e^{- (\ln 2)t/30} = 1\ \implies\ -(\ln 2) t / 30 = \ln \frac{1}{100}\ \implies\ \\ \\
t = -30 \frac{\ln 0.01}{\ln 2} \approx \text{199.3 years}$

3 0

3 years ago

The other answer choice is 30

il63 [147K]

Answer:

21 pencils

Step-by-step explanation:

b 21 pencils

8 0

2 years ago

Please help!............

atroni [7]