Mathematics Middle School

write 45% as a fraction in simplest form

Answers

Answer 1
45% = 0.45 = 45/100

9/20 is your simplest form

hope this helps

Related Questions

Maryann is testing the effectiveness of a new acne medication. There are 100 people with acne in the study. Fifty-five patients received the acne medication, and 45 other patients did not receive treatment. Thirty of the patients who received the medication reported clearer skin at the end of the study. Twenty-two of the patients who did not receive medication reported clearer skin at the end of the study. What is the probability that a patient chosen at random from this study took the medication, given that they reported clearer skin?

Answers

Answer: 58 %

Step-by-step explanation:

Let M represents the event of taking medicine, M' represents the event of not taking medicine and C represents the event of clearing skin,

Thus, according to the question,

n(M) = 55,

n(M') = 45,

n(M∩C) = 30,

n(M'∩C)= 22,

⇒ n(C) = n(M∩C) + n(M'∩C) = 30 + 22 = 52

Let S shows the total number of people,

⇒ n(S) = 100

Hence, the probability of cleared skin,

[tex]P(C)=\frac{n(C)}{n(S)}=\frac{52}{100}=0.52[/tex]

And, the probability of cleared skin of that people who took the medicines,

[tex]P(M\cap C)=\frac{n(M\cap C)}{n(S)}=\frac{30}{100}=0.3[/tex]

Thus, the probability that a patient chosen at random from this study took the medication, given that they reported clearer skin,

[tex]P(\frac{M}{C})=\frac{P(M\cap C)}{n(C)}=\frac{0.3}{0.52}=0.57692307692\approx 0.58 = 58\%[/tex]

Answer: 0.58

Step-by-step explanation:

Let A = Event that the patients received the acne medication.

B = Event that the patients did not receive the acne medication.

C = Patient reported  reported clearer skin.

Now,

[tex]P(A)=\dfrac{55}{100}=0.55\ \ ,P(B)=\dfrac{45}{100}=0.45[/tex]

[tex]P(C|A)=\dfrac{30}{55}\ \ , P(C|B)=\dfrac{22}{45}[/tex]

Using Bayes theorem, The probability that a patient chosen at random from this study took the medication, given that they reported clearer skin:

[tex]P(A|C)=\dfrac{P(A)\cdot P(C|A)}{P(A)\cdot P(C|A)+P(B)\cdot P(C|B)}\\\\=\dfrac{0.55\cdot\dfrac{30}{55}}{0.55\cdot\dfrac{30}{55}+0.45\cdot\dfrac{22}{45}}=0.576923076923\approx0.58[/tex]

Hence, the required probability : 0.58

52 thousandths in scientific notation

Answers

Answer
5.2×〖10〗^(-2)

Explanation
A number is said to written in scientific notation when it is in the form A×〖10〗^n, where 1≤A<10 and n is an integer.
In this case,
52 thousanths = 0.052
0.052=5.2×〖10〗^(-2)
52 thousandths to scientific notation = 5.2×〖10〗^(-2)

Need help on my math homework

Answers

200 +6m = 500-6m

add 6m to each side

200+12m = 500

subtract 200 from each side

12m = 300

divide both sides by 12

m = 300/12 = 25

 25 minutes


 check:

200+ 25*6 = 200 +150 = 350

500 - 25*6 = 500-150 = 350


The following table shows the data collected from a random sample of 100 middle school students on the number of hours they do household chores every week
There are 1,500 students in the school. Based on the sample proportion, how many students in the school would be expected to do household chores for at least two hours every week?
A: 480 B: 960 C: 1,020 D: 1,440

Answers

Your answer is A. 480 I hope this helps yall get a good test grade or what eva yall even doing lol @hehe

There will be 1020 students in the school doing household chores for at least two hours every week.

What is a ratio?

A ratio is a comparison of two attributes of a similar kind.

Based on the random sample, the number of students doing household chores for at least two hours every week =64+3+1 =68

Out of 100, the number of students doing household chores for at least two hours every week = 68

So, out of 1, the number of students doing household chores for at least two hours every week = 68/100

So, out of 1500, the number of students doing household chores for at least two hours every week = (68/100)*1500 =1020

Thus, there will be 1020 students in the school doing household chores for at least two hours every week.

To get more about ratios visit:

https://brainly.com/question/2328454

Alex spend 3/4 of his money. He gave 1/4 of the remainder to his sister. He had $120 left. How much did have in the beginning?

Answers

x = amount of money he had in the beginning

Because he spent 3/7, he has 4/7 left.

(4/7x)

We have to take 1/4 off THIS value. He has 3/4 of this value left.

(4/7x)1/4

Now, lets set it up as an equation

(4/7x)1/4 = 120

Multiply both sides by 4

4/7x = 480

Multiply both sides by 7/4

x = 480 * 7/4
x = 840

Hope his helped!

38 points!
Please do #11 and #12

In return:
Brainliest
Special Thanks

Answers

11.
-8y=24

We want to isolate y to get the value of 1y. Divide both sides by -8
y= -3

Final answer: y=-3

12.
This is the associative property of addition (D).
It states that when adding three terms, the sum is equal no matter the grouping (parentheses).
The answers are 11) y=3 and 12) the associative property of addition

The greatest common factor of a number n and 6 is 3. What are all of he possible whole-number values for n?

Answers

9, 21, 27, 33, 39, etc. just keep going up by 6

Answer:  Odd multiple of 3.

[tex]3,\ 9,\ 15,\ 21, \ 27, \ 33, \ 39,\ 45,...........[/tex]

Step-by-step explanation:

Given : The greatest common factor of a number n and 6 is 3.

Then, it is clear that n should be a multiple of 3.

Prime factorization of 6 :

[tex]6=2\times3[/tex]

So for n a even number then the greatest common factor will be 6.

Thus , the possible choice for n is a odd multiple of 3.

Hence, the possible whole-number values for n are :

[tex]3,\ 9,\ 15,\ 21, \ 27, \ 33, \ 39,\ 45,...........[/tex]

What is the value of y in the equation 3(3y – 12) = 0? (5 points)


4
5
6
9
4.
How many solutions does the equation 5p – 4p – 8 = –2 + 3 have? (5 points)


One
Two
None
Infinitely many

Answers

set equal to 0

3=0, nope

3y-12=0
add 12
3y=12
divide 3
y=4






5p-4p-8=-2+3
p-8=1
p=9
1 solution
The first answer for what does y equal is 4 because 3(3x4-12) = 3(12-12) =3x0=0.

Solve for b.

d = 3a + 3b


A)b=d−3a

B)b=d−3a/3

C)b=3a−d/3

D)b=d−3a/a

Answers

d = 3a + 3b
3b = d - 3a
  b =(d - 3a) / 3

answer
B)(d - 3a) / 3

-2/3×1/2×-6/7=
please help

Answers

12/42 is the answer. 

What is 23.66 times 2.03

Answers

I think its 48.0298 hope that helped
23.66 × 2.03 = 48.0298

5^2-11 over 6(3). Evaluate the expression. A. 7. B. 2/9. C.-1/63. D. 7/9

Answers

The first thing you do is exponents, so you get (25-11)/6(3). After that simplify the denominator to 18. So, you get (25-11)/18. When you subtract the numerator you get 14/18. This reduces to 7/9.

So the answer is D, 7/9.

Hope this helps!

Daniel Plays Videogames for 2/3 (Fraction) of an hour every night before dinner. hos many hours if videogames does he play altogether after 5 days.

Answers

What you should do here is either multiply the fractions, add them, or convert them into decimals and then add them. 

Multiplication: 2/3 (amount of hours he plays) x 5 (how many days he plays)
2/3 x 5/1 = 10/3   He plays a total of 10/3 hours after 5 days.

Addition: 2/3 + 2/3 + 2/3 + 2/3 + 2/3 = 10/3

Decimal: 2/3 is 0.6666666, we'll use 0.66 for short. 0.66 x 5 = 3.3
He plays a total of 3.3 hours after 5 days

Please explain how to do this

Answers

that is how you solve and the answer
The answer would be 8%. To do this, all I did was multiply each percentage by $4.50 to get the sales tax. After the multiplication, you can add your sales tax to $4.50. You can do this on each percentage until you match the final price, $4.86.

Here's my work for 8%:

8% x 4.50
=0.08 x 4.50
=0.36

4.50+0.36=4.86.

I hope this helped you!

(1, -1) parallel to y= 2/5x-3

Answers

y+1=2/5(x-1)
y+1=2/5x-2/5
y=2/5x-7/5

Write 0.12*10-3 as a decimal

Answers

0.12 x 10-3= 0.12 x 7
                  = 0.84

Hope this helps
1.8 is the answer okkkkkk


Okay So I just a question that I don't even know what it means, So if someone could help that would be awesome!

Answers

see attached picture for solution:


use distributive property to find the product of (m+3)(m+7)

Answers

m*m+m*7+3*m+3*7
Answer= m^2+10m+21

Answer:

m² + 10m + 21

Step-by-step explanation:

(m + 3)(m + 7)

m(m + 7) + 3(m + 7)

m² + 7m + 3m + 21

m² + 10m + 21

the table shows amounts earned for washing dogs. how much can be earned by washing 8 dogs
dogs,x. dollars,y
1. 18
2. 36
3. 54
4. 72


a.) $144
b.)$324
c.)$64
d.)$126

Answers

The chart is proportional and you ear $18 per dog washed.

18/1=18
26/2=18
54/3=18
72/4=18

Multiply 18*8 to get the amount earned for 8 dogs.

Final answer: $144

How do you turn -13 into an improper fraction

Answers

To turn any integer into an improper fraction, put the number over 1.

-13= -13/1

Final answer: -13/1

whats the answer to z−4/9−1/3=5/9

Answers

z-4/9 -1/3 = 5/9
z- 7/9 = 5/9
z= 5/9 + 7/9
z= 4/3
simplified 1 1/3

Help me plz math (picture)

Answers

For 34, since each diameter is in scientific notation , meaning that we have one number (1-9) followed by a decimal, we simply see which has the smallest power, which is cell C.

For 35, we multiply them out to get 0.83*10^2 (we subtract exponents when dividing). Since scientific notation is one integer from 1-9 followed by a decimal, we move 0.83 one place to the right and therefore remove one power from 10^2, getting 8.3*10

What is 2.085×106 in standard form?

208,500

285,000

2,085,000

2,850,000

Answers

2.085 x 10^6 =

 move the decimal 6 places to the right: 2,085,000

sorry my answer was deleted for some reason but the answer was c  2.085 x 106 in standard form is 2,085,000 which is c

A company’s profits (P) are related to increases in a worker’s average pay (x) by a linear equation. If the company’s profits drop by $1,500 per month for every increase of $450 per year in the worker’s average pay, what is the slope of the graph of the equation?

Answers

P=ax
   
you're looking for a in the equation
   
-1500=450x (1500 is negative because it's dropping price)
   
-1500/450=x
   
x=-3.33

Approximate the square root of 18 to the nearest tenth and plot the number on a number line SHOW ALL WORK

Answers

[tex] \sqrt{18} = \sqrt{2*3*3} = 3 \sqrt{2} = 3 * 1.41421356237 [/tex]

= 4.24264068712 ≈ 4.2

You can draw a number line making 5 divisions in between the whole numbers (4 and 5) and hence you can show 4.2


what is 15%, 0.015, and 1/5 from least to greatest

Answers

0.015, 15%, 1/5

Hope this helps!
1. Put the values into their decimal form

15%= 0.15

0.015=0.015

1/5= 0.2

2. Order them from least to greatest

0.015, 15% , 1/5


Hope this helps!

What is the midpoint of AB if A = (−2, 2) and B = (3, −1)? Enter your answer in the boxes below.

Answers

The answer is 0.5,0.5

Answer:

[tex](\frac{1}{2}, \frac{1}{2})[/tex]

Step-by-step explanation:

Since, the coordinates of the midpoint of a line segment having the endpoints [tex](x_1,y_1)[/tex] and [tex](x_2, y_2)[/tex] are,

[tex](\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})[/tex]

Here,

[tex]x_1=-2, y_1=2, x_2 = 3, y_2=-1[/tex]

Hence, the coordinates of the midpoint of segment AB are,

[tex](\frac{-2+3}{2},\frac{2-1}{2})[/tex]

[tex](\frac{1}{2}, \frac{1}{2})[/tex]

Would you be more or less likely to take a job in which the type of work is enjoyable to you? Why?

Answers

In my opinion I would be more likely to take the job that i enjoy because first who wants to dread going to work each day? On top off that if you like your job and enjoy doing it each day you would be more passionate about your work.

Answer:

yes if i enjoy the job i would not give it up

Step-by-step explanation:

which of these numbers are square numbers 25 36 48

Answers

25 and 36 are square numbers
25 is square of 5
36 is square of 6
48 is just random number.

so answer is 25,36

What's 755,082 rounded to the nearest 10,000

Answers

The answer is 760,000
It's rounded to 760,000
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