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2 years ago

Help me pls..................

Mathematics

2 answers:

valina [46]2 years ago

8 0

Angle 1 = 52 because they are alternate interior angles

Amanda [17]2 years ago

7 0

Answer:

52 degrees.

Step-by-step explanation:

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SpyIntel [72]

The answer would be 125

8 0

2 years ago

Read 2 more answers

For questions 20 through 23, use the graph below.

spayn [35]

Answer:

20) yes

21) -1

22) 1

23) -4

Step-by-step explanation:

8 0

2 years ago

What is the area of the shaded region? Explain please for both #9 and #12

Alja [10]

9=30*25+25*53. which = 2975.
You have to split the shape into two smaller ones to make two rectangles and find the area of both and add them together.
With 12, you need to find the area of both shaped and subtract the triangle form the rectangle to get 93.5.

5 0

2 years 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:

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

8 0

3 years ago

Complete the pattern Blank 8570 blank 85.7 8.57 blank

Nataly [62]

85700, 8570, 857, 85.7, 8.57, .857

4 0

3 years ago