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aksik [14]
3 years ago
5

Math question help me

Mathematics
1 answer:
Rufina [12.5K]3 years ago
4 0
I’m pretty sure it’s D
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The sum of three timesthree times a number and 11 more than the number is the same as the difference between negative 17−17 and
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3 x 3n + 11n = -17 - 2n
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Really Easy
LiRa [457]
Part A:
[$25-( $0.50×22)]÷$2=n

Part B:
[$25-($0.50×22)]÷$2=n
[$25-($11)]÷$2=n
[$14]÷$2=n
7=n

Part C: Brandon purchased 7 meals last month.
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I WiLL GiVe BrAnYeSt
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Answer:

the answer is 529

Step-by-step explanation:

divide 7,406 and 14 and the answer is 529

7 0
3 years ago
After giving a statistics exam, professor Dang determined the following five number summary for her class results
Lorico [155]
Found a complete text of the above question:

<span>After giving a statistics exam, professor Dang determined the following five number summary for her class results:  57 65 75 88 97

Use this information to draw a box plot of the exam scores. Choose the correct graph below.

57 and 97 serves as the whiskers of the box plot. 57 is the minimum number while 97 is the maximum number.

65 and 88 serves as the ends of the box while 75 is the line found inside the box.

Choices of for the correct graph is attached but my answer is graph B.</span>

7 0
3 years ago
at 10a.m. you consume an energy drink containing 800mg of caffeine. if the half-life of caffeine is 5.7 hours, how much caffeine
icang [17]

Answer:

268 mg

Step-by-step explanation:

Let A₀ = the original amount of caffeine

The amount remaining after one half-life is ½A₀.

After two half-lives, the amount remaining is ½ ×½A₀ = (½)²A₀.

After three half-lives, the amount remaining is ½ ×(½)²A₀ = (½)³A₀.

We can write a general formula for the amount remaining:

A =A₀(½)ⁿ

where n is the number of half-lives .

n = t/t_½

Data:

  A₀ = 800 mg

    t₁ = 10 a.m.

   t₂ = 7 p.m.  

t_½ = 5.7 h

Calculations:

(a) Calculate t

t = t₂ - t₁ = 7 p.m. - 10 a.m. = 19:00 - 10:00 = 9:00 = 9.00 h

(b) Calculate n

n = 9.00/5.7 = 1.58

(b) Calculate A

A = 800 × (½)^1.58 = 800 × 0.334 = 268 mg

You will still have 268 mg of caffeine in your body at 10 p.m.

6 0
3 years ago
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