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gtnhenbr [62]
3 years ago
14

Please help my grades come out soon

Mathematics
1 answer:
gogolik [260]3 years ago
6 0
The answer to the last problem, would mean that the right answer would be B. 0 ≤ m ≤ 500
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Find the area of these triangles.
melomori [17]

Answer:

First triangle: 10 units

Second triangle: 6 units

Step-by-step explanation:

First: Area if triangle is half of base times height, 1/2(4) * 5 = 2*5 = 10

Second: 1/2(4) * 3 = 2*3 = 6

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On Monday, Xavier went to recess at 1:30 p.m.
jonny [76]

Answer:

3:10pm

Step-by-step explanation:

1:30 + 20 = 1:50pm

1:50 + 55 = 2:45pm

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3 years ago
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What percent of a present amount of radioactive radium (226Ra) will remain after 1200 years? The half life of 226Ra is 1599 year
sp2606 [1]

Answer:

59.44%

Step-by-step explanation:

<em>M_{R} = \frac{M_{O} }{2^{n} }</em>

<em>n=\frac{t}{t\frac{1}{2} }</em>

<em>Where M_{R} = mass remaining</em>

<em>M_{O} =original mass.</em>

<em>t= time </em>

<em>t\frac{1}{2} =half life</em>

t\frac{1}{2} =1599,  t= 1200, M_{O} =226,  M_{R} =?

n=\frac{1200}{1599}

n= 0.750469

M_{R} = \frac{226}{2^{ 0.750469} }

M_{R} =134.3367amu

percentage of mass remaining = \frac{134.3367amu}{226amu} *100%

                                                   = 59.44%

8 0
3 years ago
What is the common difference for this arithmetic sequence?<br> -6, -2, 2, 6, 10, ...
FrozenT [24]

Answer:

common difference: t2-t1

-2-6

-8

5 0
3 years ago
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