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2 years ago

Please help please!!!!!

Mathematics

1 answer:

LenKa [72]2 years ago

7 0

Top and bottom are $\pi each$

curved surface is 2*9* $\pi$

so in total, its 18+2=20 $\pi$ thats your answer

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Disproof by counter example: For all positive integers x: 1/x < 1

xz_007 [3.2K]

Answer:

The given statement is correct for all positive integers.

Step-by-step explanation:

The given inequality is

$\frac{1}{x}$ for all positive integers

$\frac{1}{x}1$

5 0

3 years ago

Suppose a student carrying a flu virus returns to an isolated college campus of 7000 students. Determine a differential equation

Alex73 [517]

Answer:

The differential equation is $\frac{dx(t)}{dt} = k x(t) [7000 - x(t)]$

Step-by-step explanation:

From the question we are told that

The number of students are $n = 7000$

The number of student that have contracted the flu is x(t)

The number of student that don't have the flu is mathematically represented as

$z = 7000 - x(t)$

The rate at which the disease spread is proportional to the number of interactions between students with the flu and students who have not yet contracted it, which can be mathematically represented as

$\frac{dx(t)}{dt} \ \ \ \alpha\ \ \ x(t) [7000 - x(t)]$

=> $\frac{dx(t)}{dt} = k x(t) [7000 - x(t)]$

5 0

3 years ago

Find with proof the minimum possible k such that every subset of f1; 2; : : : ; 2022g of size k must contain at least two elemen

Helga [31]

Answer:

Minimum possible K = 307

Step-by-step explanation:

Attached below is the detailed solution

Given set { 1, 2 , .......... 2022 }

The largest subset will contain prime numbers because they are not multiples of any number but 1

6 0

2 years ago

Florence is itemizing deductions on her federal income tax return. Her AGI was $197,130 last year, and she contributed $99,310 t

zhannawk [14.2K]

Adjusted gross income (AGI) is a person's total gross income minus specific deductions. So, Florence can deduct an amount of: .5 or 50% of 197130 = 98,565 is the maximum deduction which is less that actual amount given for the charitable contributions.

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3 years ago

Can someone tell me what 5/6 x 9/10 is and explain it please don’t just give me a answer

nadezda [96]

How this is solved is by

Multiply 5/6 with 9/10
This multiplication involving fractions can also be rephrased as "What is 5/6 of 9/10?"

5
6
×
9
10
is
3
4
.

Steps for multiplying fractions

Simply multiply the numerators and denominators separately:
5
6
×
9
10
=
5 × 9
6 × 10
=
45
60
After reducing the fraction, the answer is
3
4
Or 3/4

8 0

2 years ago