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2 years ago

Can someone show me how to do the problem ? If I take 8 pills a week, how many months is that?

Mathematics

1 answer:

stiv31 [10]2 years ago

4 0

Answer:

Step-by-step explanation:

I assume you want to find the pills per month? You know that you take 8 pills per week, and there are 4 weeks in a month. So:

8 pills/week × (4 week / month) = 32 pills/month

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Let A be a set of numbers.

LUCKY_DIMON [66]

Answer:

a. closed under addition and multiplication

b. not closed under addition but closed under multiplication.

c. not closed under addition and multiplication

d. closed under addition and multiplication

e. not closed under addition but closed under multiplication

Step-by-step explanation:

Let A be a set of all integers divisible by 5.

Let $x,y$ ∈A such that $x=5m\,,\,y=5n$

Find $x+y,xy$

$x+y=5m+5n=5(m+n)$

So, $x+y$ is divisible by 5.

$xy=(5m)(5n)=25mn=5(5mn)$

So,

$xy$ is divisible by 5.

Therefore, A is closed under addition and multiplication.

Let A = { 2n +1 | n ∈ Z}

Let $x,y$ ∈A such that $x=2m+1\,,\,y=2n+1$ where m, n ∈ Z.

Find $x+y,xy$

$x+y=2m+1+2n+1=2m+2n+2=2(m+n+1)$

So,

$x+y$ ∉ A

$xy=(2m+1)(2n+1)=4mn+2m+2n+1=2(2mn+m+n)+1$

So,

$xy$ ∈ A

Therefore, A is not closed under addition but A is closed under multiplication.

$Let A=\{2,5,8,11,14,...\}$

Let $x=2,y=5$ but $x+y=2+5=7$ ∉A

Also,

$xy=2(5)=10$ ∉A

Therefore, A is not closed under addition and multiplication.

Let A = { 17n: n∈Z}

Let $x,y$ ∈ A such that $x=17n,y=17m$

Find x + y and xy

$x+y=17n+17m=17(n+m)$

$xy=(17m)(17n)=289mn=17(17mn)$

So,

$x+y,xy$ ∈ A

Therefore, A is closed under addition and multiplication.

Let A be the set of nonzero real numbers.

Let $x,y$ ∈ A such that $x=-1,y=1$

Find x + y

$x+y=-1+1=0$

So,

$x+y$ ∈ A

Also, if x and y are two nonzero real numbers then xy is also a non-zero real number.

Therefore, A is not closed under addition but A is closed under multiplication.

4 0

2 years ago

PLZ HELP ASAP!!!!!!!!

andreyandreev [35.5K]

Answer:

Step-by-step explanation:

formula for cylinder:V=πr2h

shape of the base: circle

formula for circle: A=πr2

radius: 6.5cm

height: 16cm

V=3.14x6.5^2x16

2122.64cm^3

4 0

3 years ago

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Find the slope intercept equation of the line with m=-2 and b=4

Scorpion4ik [409]

Slope intercept form is y = mx + b, where m is the slope and b is the y-intercept.

We are given the values of m and b. Inserting the given values into the equation gives us:

y = -2x + 4

This is the slope-intercept equation of the line. Let me know if you need any clarifications, thanks!

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3 years ago

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Would it make sense to add more points to the graph from x=0 to x =0?

Sedaia [141]

No, because you're not actually moving.

5 0

2 years ago

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A model ship is 0.38 M long how long is the ship in centimeters

Leokris [45]

Answer:

Actual length of ship is 150 meters.

Step-by-step explanation:

As model ship is built to a scale of

1 centimeter : 5 meters and

length of model ship is 30 centimeters

Actual length of ship is 30 × 5 = 150 meters.

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3 years ago

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Can someone show me how to do the problem ? If I take 8 pills a week, how many months is that?​

Can someone show me how to do the problem ? If I take 8 pills a week, how many months is that?