Mathematics Middle School

If 2/3 of the girls have brown eyes and 1/4 of the girls have blue eyes, what fraction of the girls in class have niether blue or nrown eyes?

Answers

Answer 1

Answer:

1/12

Step-by-step explanation:

Answer 2

The fraction of the girls in class that have neither blue or green eyes is given by B = 1/12 of the girls

What is a Fraction?

An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.

Given data ,

Let the fraction of the girls in class that have neither blue or green eyes be represented as B

Now , the value of B is

Let the fraction of girls in the class that have blue eyes = ( 2/3 ) of girls

Let the fraction of girls in the class that have brown eyes = ( 1/4 ) of girls

So , the total fraction A = ( 2/3 ) + ( 1/4 )

The total fraction of girls with either blue of brown eyes A = ( 11/12 ) of girls

And , fraction of the girls in class that have neither blue or green eyes is given by B = 1 - A

On simplifying , we get

The fraction of the girls in class that have neither blue or green eyes is given by B = 1 - 11/12

The fraction of the girls in class that have neither blue or green eyes is given by B = 1/12

Therefore , the value of B is ( 1/12 ) of the girls

Hence , the fraction is 1/12 of the girls

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Related Questions

You need to rent a moving truck for a day you have identified two companies that rent trucks company a charges $45 per day plus $.10 per mile company BCharges $30 per day plus $.20 per mile for how many miles will be cost of renting be the same

Answers

45 + 0.10m = 30 + 0.20m
45 - 30 = 0.20m - 0.10m
15 = 0.10m
15/0.10 = m
150 = m.....they are the same at 150 minutes

check..
45 + 0.10(150) = 60
30 + 0.20(150) = 60
yep, it checks out,,,150 miles

20 Points!!!

When you add a negative and a positive the answer is: Neg/Pos

When you add numbers with with the same sign the answer is: Neg/Pos

When you subtract a negative and a positive the answer is: Neg/Pos

When you subtract numbers with the same sign, the answer is: Neg/Pos

Answers

All right,  All you have to remember is a triangle.  In 2 angles of the triangle, add a negative sign.  In the last side, add a positive.  All you have to do now is cover up the 2 sides in your equation, and the uncovered one is your answer.  For example, -1 times -1=???  So you cover up the 2 negative sides, and you are left with a positive.  However, this only works with multiplication and division.  When it comes to subtraction and addition, the answer varies with the number.  Hope this helps.
When you add a negative and positive the answer is positive.
When you add numbers with the same sign it is positive
When you subtract numbers with the same sign it is negative

what property was used to rewrite the polynomial expression (x+5)+3(a+(6x)y) to 5+(x+3a+(18x)y)

Answers

3(a+(6x)y) was clearly multiplied out as seen by the 3a and 18xy, so the distributive property was used there. In addition, the commutative and associative properties state that you can rearrange sums, so those were used too 

Give an example of the associative property of multiplication

Answers

(6x7)x5 = 6x(7x5), hope this helps

2+7+5=2+7+5
(2+7)+5=2+(7+5)
(9)+5=2+(12)
14=14

Jim spends 3 1/2 days a month away from home if he does this for 6 1/2 months how many days would Jim be away from home

Answers

Final answer:

Jim would be away from home for approximately 23 days.

Explanation:

To find out how many days Jim would be away from home, we need to multiply the number of days he spends away from home in a month by the number of months he does this for:

3 1/2 days x 6 1/2 months = (7/2) x (13/2) = 91/4 = 22.75 days

Since we can't have a fraction of a day, we round up the decimal to the nearest whole number. So, Jim would be away from home for approximately 23 days.

Divide. Round to the nearest tenth if necessary:
39.39 divided by 3

Answers

39.39/3 = 13.13

rounded to the nearest tenth is: 13.1

hope this helps
Or... you can use a calculator. But, I can understand if you are not allowed to use a calculator.

39.39 / 3 = 13.13

You can round that down to: 13.1

The length of a rectangle is 4 inches more than its width the perimeter is 96 inches what is the length and width of the rectangle

Answers

The length is 20 and the width is 16. You have to do 96/4 (for four sides) you get 24 then you have to do 24-8 (for 4 inches more than the width for two sides)

during the summer you work 30 hours per week at a gas station and earned $8.75 per hour. You also work as a landscaper for $11 per hour and your work as many hours as you want. You want to earn a total of $400 per week. How many hours mostly work as a landscaper?

Answers

a very minimum of 12.5 because 30x8.75= 262.5 and when you subtract that from 400 you get 137.5 and that divided by 11 equals 12.5 
Final answer:

To earn a total of $400 per week, considering you already earn $262.50 working 30 hours a week at a gas station, you need to make up the rest ($137.50) working as a landscaper. This equates to approximately 12.5 hours of work a week at an hourly rate of $11.

Explanation:

The nature of the question is mathematical, specifically relating to linear equations. Initially, we know you're earning $8.75 per hour from your job at the gas station, working 30 hours a week, which gives you a total of $8.75 * 30 = $262.50 per week. Your goal is to earn $400 in total per week. Therefore, your earnings from the landscaping job need to make up the difference, which is $400 - $262.50 = $137.50.

Next, to find out how many hours you need to work as a landscaper, we divide that by the landscaper's hourly wage of $11, so $137.50 / $11 = 12.5 hours approximately. Hence to meet your target of $400 per week, you need to work about 12.5 hours as a landscaper, in addition to your 30 hours at the gas station each week.

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what is the simplified form of the expression 11[(9^2-5^2) divided by 2^2+8]
224.5
242
51.3
110

Answers

[tex] \frac{11(9^2-5^2)}{2^2+8} = \frac{11(81-25)}{4+8} = \frac{11*56}{12} = \frac{11*28}{6} = \frac{11*14}{3} = \frac{154}{3} [/tex]= 51.333333333 ≈ 51.3

Hence, the answer is C.

Answer:

51.3

Step-by-step explanation:

In order to calculate this, you have to remember the norms for the solution of math problems with hierarchy of operations called PEMDAS:

   Parentheses (simplify inside 'em)

   Exponents

   Multiplication and Division (from left to right)

   Addition and Subtraction (from left to right)

So we first solve parentheses:

11[(9^2-5^2)= 11(81-25)=11(56)= 616.

and now we have to divide that by the result of:

2^2+8

Remember first exponents:

2^2+8= 4+8=12

ANd now we just divide:

616/12=51.3333

So the answer would be 51.3

multiply (2.75×10−8)⋅(4.6×10−3)

Answers

2.75 times 10 is 27.5 minus 8 is 19.3.
4.6 times 10 is 46 minus 3 is 43

Then 19.3 times 43 equals 829.9.
so your answer is 829.9.
2.75 * 10 - 8=19.5 
4.6 *10 - 3= 43
19.5 * 43=838.5 
Good Luck, hope this helps 

find the perimeter of the polygon with the given vertices

G(2,4), H(2,-3), J(-2,-3), K(-2,4)

Answers

I graphed these vertices myself in the attached photo, and it turned out to be a rectangle;  With the thought that you perhaps made a typo and meant rectangle instead of polygon I continued on and found the perimeter of the rectangle.  

The formula for finding the perimeter of a rectangle is P = 2(l+w).  

I counted the units of the long side (K & J) to get the length, which is 7.

Next, I counted the units between J & H to find the width which is 4.  Now we're ready to use the formula.  

First I will add the length plus the width, 7 + 4 = 11.  

Then I will multiply 2 x 11 to get a product of 22.  

P = 22.  :D 

Write -7 - (-4) as an addition problem. Then simplify the expression.

Answers

-7 + 4

if you subtract a negative it turns it into a positive, so just take away the negative and turn the sub into an addition sign

In general, the air temperature decreases 12 degrees Fahrenheit for every 4,000 feet increase altitude. If a hiker climbs 3,000 feet, by how much can she expect the temperature to increase?

Answers

9 degrees


because 12/4 = 3 degrees (per 1000 feet)
3 x 3 = 9 degrees total (in 3000 feet)

hope this helps

1/3(12-24v)=-2(4v-2)

Solve the equation for 15 points PLEASE HELP!!!!!!!

Answers

Relax! This isn't so hard once you grasp it. In an equation like this, what's the first step? Distributive property, right? Multiply 1/3 by 12, then by -24 v, and apply the same process to the other side. This leaves you with 4-8v=-8v+4. Now you need to isolate that variable. You have the same variable on both sides, so you do inverse of subtraction on either one. I'm going to choose the one on the right. You add 8v to both sides, leaving you with 4-v=4. Subtract 4 from the first side, and get -v=4. You aren't solving for -v, so flip the sign, and your final answer is v=-4. Make sense? (Let me know if it doesn't--I'm always willing to walk you through it some other way. I plugged it back in, and I am 100% sure that this answer is correct.)

4 7\12 + 2 3\4 +7 5\12

Answers

4 + 2 + 7 = 13

7/12 + 3/4 + 5/12 = 7/12 + 9/12 + 5/12 = 21/12 = 1 9/12 = 1 3/4

13 + 1 3/4 = 

14 3/4 <===

Answer: 6/12 in other words 1/2

hope thats correct

Above 1700 feet to 2500 feet write compound inequality

Answers

1700>X<2500

Hope this helps! :)
1700 < x ≥ 2500

above 1700 means it cant be 1700, but as long as it's greater than 1700, the inequality works. to 2500 feet means it can be 2500, but it can't be greater than 2500. 

turn 129/3930 into decimal

Answers

To find the decimal, all you need to do is take the number on top and divide it by the one in the bottom. 129/3930=0.03
Divide 129 by 3930 
Which is 0.03282442748
Then round it to .033

Hope I helped :)

In the seventh grade, the ratio of girls to boys is 7:5. If there are 21 girls in the seventh grade, how many boys are there?

Answers

There is 15 boys in the Seventh Grade

So we are given the fraction ratio...

7 girls

---------

5 boys

if we make the fraction

21 girls

----------

x boys

equal each other, we can cross multiply and find x.

Cross multiplying means to multiply 7 times x and 21 by 5.

then we set up a little equation

7x = (21)(5) First lets solve what 21 times 5 is 

7x = 105 Now we have to divide both sides by 7 to get x alone.

÷7 = ÷7  On the left side of the equation the 7 cancels and we solve on the right.

x = 15


So we know that when we have 21 girls in the 7th grade classroom we also have 15 boys.


Good Luck! :)

<3

find the range of f(x)=-3x+1 if the domain is (x=-2,7(

Answers

To find the range of this function, simply plug each of the end values into the original equation. In this case, with x of -2, the function becomes f(x) = 6+1 or 7, and with x of 7, the function becomes f(x) = -21+1 or -20. As such, the range of the function is -21 <= f(x) <= 7.

The grass in the outfield of a professional baseball stadium is trimmed to a height of 5.08 * 10^-5 miles. Which unit of measurement is most appropriate to measure in height?

Answers


The height is given as 5.05 x 10⁻⁵ miles.

Because this is in English units, we should reduce the height to inches.

Note that
1 mile = 5280 ft
           = 5280*12 = 63360 in

Therefore the height is
(5.08 x 10⁻⁵ miles)*(63360 in/mile) = 3.219 in

Answer:
3.2 in (nearest tenth)
The given measurement is in English units, so the conversion stays in English units.

twenty less than 8 times a number is the same as 15 more than the number in equation form

Answers

8x-20=15+x

7x=35 subtract x from left side and add 20 to right side
x=5 divide


Which statement is true about the graphed function?

F(x) < 0 over the intervals (-∞, -0.7) and (0.76, 2.5).
F(x) > 0 over the intervals (-∞, -0.7) and (0.76, 2.5).
F(x) < 0 over the intervals (-0.7, 0.76) and (2.5, ∞).
F(x) > 0 over the intervals (-0.7, 0.76) and (0.76, ∞).

Answers

Choice A) True. The f(x) portion is below the x axis on the interval (-infinity, -0.7) and on the interval (0.76, 2.5)

Choice B) False. This is a complete contradiction of choice A. 

Choice C) False. The portion of f(x) on the interval (-0.7, 0.76) is above the x axis.

Choice D) False. The portion of f(x) is above the x axis on the interval (-0.7,0.76); however, f(x) is below the x axis on the interval (0.76, 2.5). See choice A.

---------------------------------------

In summary, the final answer is choice A

Answer: A. F(x) < 0 over the intervals (-∞, -0.7) and (0.76, 2.5).

What is the answer of 3·(2x+5)−23=10?

Answers

6x - 8 = 10
+ 8 +8
6x = 18
x = 3
It becomes: 6x+15-23=10

We send 23 to the other side: 6x+15=10+23

Then it becomes: 6x+15=33

Then we send 15 to the other side: 6x=33-15 》6x=18

Divide the each side to 6: x=3

The answer is 3.

Explain how to simplify the fraction 12 over 36

Answers

The fraction 12/36
Is quite simple first find out what can go into 12 and 36
The factors that can go into 12 and 36 is 12.
12÷12=1
36÷12=3
So the final answer will be 1/3

The fraction is, 12/36 is the fraction 12 over 36.

What is fraction?

A fraction represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters.

here, we have,

the fraction 12 over 36

Is quite simple first find out what can go into 12 and 36

The factors that can go into 12 and 36 is 12.

12÷12=1

36÷12=3

So the final answer will be 1/3.

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A rectangular patio has a length of 12 1/2 feet and an area of 103 1/8 square feet. What is the width of the patio?

Answers

Area= length x width

103 1/8 = 12 1/2 x width

width = (103 1/8) ÷ (12 1/2)
width = 8.25 or 8 1/4

Answer:

The answer is b. 8 1/4 feet.

what is the area of the science lab table that is 60 by 48 inches in feet?

Answers

2880 is the area in inches and 240 is the area in feet.
Most tables are rectangular so we can use the rectangle area formula:
[tex]A = L * W[/tex]

A = 60 * 48
A = 2880

Convert inches to feet.

2880 inches = 240 feet

So, the answer is 240 square feet.

In order from least to greatest what is 19% 19/20 1.9% 1.9 x 10 to the power of 5

Answers

1.9%, 19%, 19/20, 1.9x10 

A bottle contains 240 millimeters of juice. How many litters of juice is this?

Answers

The conversion of (240mL)/1 * (10^-3L)/1mL = .24L

Can anyone help me with this question?

Answers

Since a cube is essentially 6 squares, and the base, length, and height is ∛(volume)=∛(27)=3 due to that a cube is base*width*height, with each being the same. Each square is 3*3=9 square centimeters. 6 equal squares are 9*6=54 square centimeters. which is 1 cube. 54*2=108, 54*3=162, and we have 6*27=162 square inches, meaning that we have 3 cubes!

What is :
1)9.4 divided by 47
2)2.583 divided by 9
3)33.8 divided by 26
4) 37.8 divided by 18
Brain teasers answer in the comments ( I'm bored just do it )

Answers

1) 9.4 divided by 47 = 0.2

2) 2.583 divided by 9 = 0.827

3) 33.8 divided by 26 = 1.3

4) 37.8 divided by 18 = 2.1

Answer:

since u don't need the answers imma just leave this here, thnx for the points :)

Step-by-step explanation:

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