2 years ago

−10 ÷ −2

Mathematics

2 answers:

vladimir2022 [97]2 years ago

7 0

Answer:

$- 10 \div - 2 = 5$

$- 48 \div 8 = 6$

$- 120 \div 6 = - 20$

jeyben [28]2 years ago

4 0

Answer:

Step-by-step explanation:

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ASHA 777 [7]

Answer:

Step-by-step explanation:

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2 years ago

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Solve X - 3/4 = 1 1/8

goldfiish [28.3K]

Answer:

Idk if you have to solve it by X so I say it's X=2.125

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2 years ago

The graph below plots a function f(x):

Afina-wow [57]

The average rate of change of a linear function is the slope of the line. Since we are given the following coordinates:
(0,150) and (3,0)
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2 years ago

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Kellie ran 3 laps around the high school track if the total distancekellie ran was 7 1/3 miles how long is each lap around the t

agasfer [191]

Answer:

22 miles.

Step-by-step explanation:

7 1/3 ×3=22

8 0

1 year ago

Plutonium-240 decays according to the function L where o

PIT_PIT [208]

Answer:

$\boxed{\textbf{1700 yr}}$

Step-by-step explanation:

$-\dfrac{\text{d}L}{\text{d}t} = kL\\\\\dfrac{dL}{L}=-kdt\\\\\ln L = -kt + C\\\text{At t = 0, L = L$_{0}$, so C = $\ln L_{0}$}\\\ln L = -kt + \ln L_{0}\\\ln L_{0} - \ln L = kt\\\\\ln \dfrac{L_{0}}{L} =kt$

Data:

L₀ = 24 g

L = 20 g

k = 0.000 11 yr⁻¹

Calculation:

$\ln \dfrac{24}{20} =0.000 11t\\\\\ln 1.2 = 0.000 11t\\\\0.1823 = 0.000 11t\\\\t = \dfrac{0.1823}{0.000 11} = \textbf{1700 yr}\\\\\text{It will take } \boxed{\textbf{1700 yr}}\text{ for the polonium to decay to 20 g}$

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2 years ago