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docker41 [41]
3 years ago
12

If one half life is the amount of time it takes for a radio active isotope to decay by a factor of 2, approximately which percen

t describes how much of the initial quantity of a substance would remain after 2-3 half lives?
A.0.25
B.0.20
C.0.75
D.0.50
Mathematics
1 answer:
ycow [4]3 years ago
3 0

Answer:

the answer for this question is option c

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What is the area of the composite figure
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To solve this we will divide the given composite figure into three figures. The three figures will be 2 squares and 1 rectangle. Let's find their areas and add them!

\boxed{ \sf \: area \: of \: square =side ^{2}  }

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\rm \implies \: area = 3 ^{2}

\rm \implies9

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  • The area of second square will be also 9m², because the sides of both squares are equal.

<h3>Now area of the reactangle⤵️</h3>

  • Length = 6m
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\sf \: area \: of \: rectangle = length \times breadtg

\tt \dashrightarrow \: area = 10 \times 3

\tt \dashrightarrow \: area = 30m ^{2}

<em>Thus, The area of rectangle is 30m²....</em>

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\bf \:total \: area = 9 + 9 + 30 \\   \bf= 48m {}^{2}

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2 years ago
Triangle DEF is congruent to triangle GHI. Side DE measures 52. Side GH measures 10x-13. Side HI measures 12x-16 find the value
Lapatulllka [165]
Check the picture below.

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3 years ago
Someone do as much of the page as possible (ill mark brainlyless)
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Answer:

Step-by-step explanation:

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5) x⁴ - 36 = (x²)² - 6² = (x² + 6) (x² - 6)

6)64c³ +  1 = (4c)³ + 1³ = (4c)³ + 3(4c)²(1) + 3(4c)(1)³ + 1³

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                   = 64c³ + 48c² +12c + 1

7) k³ - 27 = k³- 3³ =  (k + 3)(k - 3)

8 0
3 years ago
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shtirl [24]
(r^-7)^6 = r^-42 . . . . exponents are multiplied
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Csc0sin20-sec0=cos20sec0​
Mkey [24]

Answer:0

Step-by-step explanation:

(0)0.342-0=0.9397(0)

0=0

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