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Ivahew [28]
4 years ago
5

To the nearest hundredth, what is the value of x?

Mathematics
2 answers:
Scrat [10]4 years ago
7 0

value of 5 x 6 is 30 or the value of x + y if x = 6 and y = 3 is 9. Value can also refer to a variable or constant

finlep [7]4 years ago
7 0

Answer:

B

Step-by-step explanation:

Using the cosine ratio in the right triangle

hypotenuse = x and adjacent = 79

cos38° = \frac{adjacent}{hypotenuse} = \frac{79}{x}

Multiply both sides by x

x × cos38° = 79 ( divide both sides by cos38° )

x = \frac{79}{cos38} ≈ 100.25 → A

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Iodine-125 has a half-life of about 60 days. How many milligrams of a 1000mg sample will remain after 240 days?
Bezzdna [24]

62.5 mg sample will remain after 240 days

Step-by-step explanation:

Given

Half-life = T =  60 days

The formula for calculating the quantity after n half lives is given by:

N = N_0(\frac{1}{2})^n

Here

N is the final amount

N_0 is the initial amount

n is the number of half lives passed

The number of half lives are calculated by dividing the time for which the remaining quantity has to be found by half life

The quantity has to be calculated for 240 days so,

n = \frac{240}{60}\\n = 4

Given

N_0 = 1000\ mg

Putting the values in the formula

N = 1000 (\frac{1}{2})^4\\=1000 * \frac{1}{16}\\=\frac{1000}{16}\\=62.5\ mg

Hence,

62.5 mg sample will remain after 240 days

Keywords: Half-life, sample

Learn more about half-life at:

  • brainly.com/question/11286417
  • brainly.com/question/12973601

#LearnwithBrainly

4 0
4 years ago
Jami went to have a manicure that cost $25. She wanted to tip the technician 20% and
Helga [31]

5.75% of 25 is 1.43

20% of 25 is 5

25+5=30+1.43=$31.43

Jami Spent $31.43 on her manicure.

5 0
3 years ago
Round 6,584,003 to the nearest 10,000
lukranit [14]
The answer is 6,580,000 :)
8 0
3 years ago
Read 2 more answers
When y increases by 15, x decreases by 45. Which equation represents this rate of change?
ikadub [295]

Answer:

y=3x

Step-by-step explanation:

im prob wrong but try milk first then cereal

3 0
3 years ago
A circle has a diameter of 4 inches. Which statement about the area and circumference of the circle is true?
hoa [83]
Only the second one
when diameter is 4 r=2
so 2pi*2=2²*pi the first is circumference the second area
7 0
4 years ago
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