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vivado [14]
3 years ago
13

What is the 100th term of the sequence 2, 3, 5, 6, 7, 10, 11, ... which consists of all of the positive integers that are neithe

r perfect squares nor perfect cubes?
Mathematics
2 answers:
emmainna [20.7K]3 years ago
8 0

Answer:

  112

Step-by-step explanation:

There are 10 squares in the interval [1, 100], and there are 4 cubes in that interval, two of which are also squares (1, and 64). Hence 12 numbers must be added to the list to make up for the ones that are stricken. The 100th number is 112.

OleMash [197]3 years ago
4 0

Answer:

112

Step-by-step explanation:

The given sequence is

2, 3, 5, 6, 7, 10, 11, ...

It consists of all of the positive integers that are neither perfect squares nor perfect cubes.

We need to find the 100th term of the sequence.

Squares = 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121

Cubes = 1, 8, 27, 64, 125

Squares and cubes from 1 to 100 are 1, 4, 8, 9, 16, 25, 27, 36, 49, 64, 81, 100.

Total 12 numbers are squares or cubes.

So, the 100th term of this sequence is

100 + 12 = 112

Therefore, the 100th term is 112.

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murzikaleks [220]

Answer:

Tim read 81 pages.

Step-by-step explanation:

If he read 3 pages on Monday and tripled the amount of pages he red based of off the amount of pages he read the previous day, he would have read 3 pages on Monday, 9 pages on Tuesday, 27 pages on Wednesday, and 81 pages on Thursday.

Monday: 3

Tuesday: 3 x 3 = 9

Wednesday: 9 x 3 = 27

Thursday: 27 x 3 = 81

I hope this helps you! :D

8 0
2 years ago
Does the table show a direct proportional relationship? If so, what is the constant of proportionality?
lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality (k) is described by the following expression:

k = \frac{y}{x} (1)

Where:

x - Input.

y - Output.

If we know that (x_{1}, y_{1}) = (13, 45.5), (x_{2}, y_{2}) = (14, 49) and (x_{3}, y_{3}) = (15, 52.5), then the constants of proportionalities of each ordered pair are, respectively:

k_{1} = \frac{y_{1}}{x_{1}}

k_{1} = \frac{45.5}{13}

k_{1} = \frac{7}{2}

k_{2} = \frac{y_2}{x_2}

k_{2} = \frac{49}{14}

k_{2} = \frac{7}{2}

k_{3} = \frac{y_{3}}{x_{3}}

k_{3} = \frac{52.5}{15}

k_{3} = \frac{7}{2}

Since k_{1} = k_{2} = k_{3}, the constant of proportionality is 3.5.

8 0
3 years ago
Help pls ill love you forever
Nesterboy [21]

Answer:

y-4=\frac{1}{5}(x-7)

Step-by-step explanation:

The point-slope form of a line is given by:

y-y_1=m(x-x_1)

Where

(x_1,y_1) is the coordinate pair (any of the points given)

m is the slope. The ratio of change in y coordinates by x coordinates

Let's calculate the slope:

m=\frac{4-3}{7-2}\\m=\frac{1}{5}

Now, it is given "y - 4", so y_1 is 4, so they are using the coordinate pair (7,4). So we can say x_1 = 7

Now we have all the values, lets write the equation:

y-y_1=m(x-x_1)\\y-4=\frac{1}{5}(x-7)

This is the point-slope form.

3 0
3 years ago
Joe earns $14 an hour and Blaine earns $18 per hour. Joe receives a raise of $1.75 every six months, and Blaine receives a raise
Katarina [22]

After 4 interval of six months, Joe to earn same hourly rate as Blaine

<em><u>Solution:</u></em>

Given that,

Amount earned by Joe = $ 14 per hour

Amount earned by Blaine = $ 18 per hour

Lets assume the number of six month intervals be "x"

<em><u>Joe receives a raise of $1.75 every six months</u></em>

Therefore,

Joe earning: 14 + 1.75(number of six month intervals)

Equation for Joe earning: 14 + 1.75x ------- eqn 1

<em><u>Blaine receives a raise of $0.75 every six months</u></em>

Therefore,

Blaine earning: 18 + 0.75(number of six month intervals)

Equation for Blaine earning: 18 + 0.75x ------------ eqn 2

The number of six-month intervals it will take Joe to earn the same hourly rate as Blaine,

Eqn 1 must be equal to eqn 2

14+1.75x = 18+0.75x\\\\1.75x-0.75x = 18-14\\\\1x = 4\\\\x = 4

Thus after 4 interval of six months, Joe to earn same hourly rate as Blaine.

8 0
3 years ago
A local bowling alley charges bowlers $5.25 per game and $3.50 to rent a pair of bowling shoes. The bowling alley also offers fo
Fynjy0 [20]

Answer:

i need help with this also it  is confusing is yours a test???

Step-by-step explanation:

6 0
3 years ago
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