Mathematics Middle School

when multiplying and subtracting fractions ... 5/6-3/4

Answers

Answer 1
multiplying: 5/6 x 3/4 = 15/24
do not need common denominators

subtracting: 5/6 - 3/4 = 20/24 - 18/24 = 2/24
need a common denominator

Related Questions

If the sales tax in Maple Town is 9.5%, how much would an ice cream of $4.25 cost with the tax added? Please explain.

Answers

To find the sales tax, you need to find 9.5% of 4.25

4.25*.095 = .40375

Now we need to add the sales tax to the price.

4.25 + .40375 = 4.65375
Because dollars one have 2 decimal points we should round this to 4.65

Hope this helped!
I agree with the first answer

a grandmother says her grandson is two years older than her granddaughter and that together they are at least 12 years old how old are her grandson and granddaughter

Answers

 x = the granddaughter's age x + 2 = the grandson's age   x + x + 2 ≥ 12        Collect like terms.            2x ≥ 12            Divide both sides by 2.              x ≥ 6 years       x + 2 ≥ 8 years
Grandson=granddaughter + 2
Grandson +gradaughter = 12

Make grandson x and granddaughter y

X=y + 2
X + y = 12

(Y + 2) + y = 12

2y + 2= 12
2y = 10
Y = 5
Granddaughter is 5
Grandson is 7

Solve for x. −2(x+1/3)+9x=4 ​

PLZ HELP!!!!
20 POINTS!!!

Answers

-2x-2/3+9x=4
7x14/3
2/3
2/3 is the answer

distribute the -2 

you end up with -2x -2/3 + 9x = 4

combine the x's

7x - 2/3 = 4

7x = 4 2/3

x = 2/3

A shopper uses a department-store gift card to pay for 3 sweaters priced at $27 each. What is the change in the value of the gift card?

Answers

Well you multiply 27 by 3 to get 71 dollars

The required change in the value of the gift card is $ 81

What is arithmetic?

Arithmetic is the branch of mathematics that deals with the study of numbers using various operations on them. Basic operations of math are addition, subtraction, multiplication and division. These operations are denoted by the given symbols.

Given:

A shopper uses a department-store gift card to pay for 3 sweaters priced at $27 each.

According to given question we have

By the use of arithmetic we have

1 sweaters priced = $27

3 sweaters priced =  $27 ×3

3 sweaters priced =$ 81

Therefore, the required change in the value of the gift card is $ 81

Learn more details about arithmetic  here:

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If the market price for a chair is $24 and the marginal cost for the chair is $7, the marginal revenue from the chair would be _____. $24 $17 $31 $7

Answers

The think that the  anwser is $24

A school has 625 students and 325 of them are girls what fraction of the students are girls write your answer in simplest form
A. 13/25
B. 1/2
C. 65/125
D. 20/35

Answers

The answer to your question would be letter A. 13/25
Well you first turn that story problem into a fraction, 325/625. Then find the number that goes into the numerator and denominator evenly. Which is 5, then you get the answer of 13/25.

In total your answer is A. 13/25
I hope this helped and please let me know if I was correct or not. :D

Help please!

What type of equation will best fit the data below?

Linear
Quadratic
Exponential

Answers

it's a parabolic curve, so quadratic is best

What type of equation will best fit the data below?

The given data represents a parabolic curve, that means it is a quadratic equation.

Explanation:

A parabola is defined as a curve with all the points at an equal distance from the focus and the straight line. While calculating the whole parabola, make sure that the equation for the given parabola must be in the standard quadratic form f(x) = ax² + bx + c, where "a" is not equal to zero.

Help Needed.

Six and a half pounds of oranges cost $5.59. What is the cost of one
pound?

Answers

0.86 a pound. Divide 5.59 by 6.5
so you wanna basically divide 5.59 by 6 1/2 too give you .86 for each pound.

for each pair of numbers identify which number is farther from positive 1 explain your reasoning

a. -7 or +3

b. -10 or +7

Answers

Just ignore the sign and then take the larger number :)

Would the answer be 31 or 16?

Answers

32/2= 16 games the first round

then you have 16 teams left

16/2 = 8 games the second round

8/2 =4 teams left

4/2 =2 games the 3rd round

 then you have 2 teams left, so 1 game in the fourth round

 so 16 +8 +4 +2 +1 = 31 games

what is the constant term of the expression 90x-20

Answers

Constant term is a number with no variables next to it..

In this case its  -20 

Shelley's score = 90x

Terrence's score = 90x-20

Difference between them is (90x - 20 - 90x) = -20

The constant term represents the difference between Shelly's and Terrence's scores.

2/3p-14=p+13
How do I solve this

Answers

Add 14 to both sides
2/3p=p+27

Subtract p from both sides
-1/3p= 27

Multiply both sides by -3
p= -81

Final answer: p=-81
So here you just want to move all the like terms to either sides.

You can do this by first adding 14 to both sides.

2/3p - 14 = p + 13

+ 14           +14

2/3p = p + 27

And then by subtracting p from both sides

-1/3p = 27

And then dividing both sides by -1/3

p = -81




write 2 numbers that fit each description.if there is no such number write none.

1) negative integer
2) negative rational number that is not an integer
3) negative irrational number

Answers

negative rational number that is not an integer
1) -2, -3 (any negative whole number)
2) -1/2, -3/4 ( any negative number that isn’t a repeating decimal, or whole number)
3) square root of -3, square root of 2 (any negative number with a crazy, repeating, goes on forever decimal)

there are four seventh grade math teachers at central middle school mr. abott teaches 120 students in 6 classes mrs. garcia teaches 48 students in 3 classes mrs.nguyen's 5 classes total 109 students and ms. turner has a total of 121 students in 6 classes what is the average number of students in each seventh grade math class at central middle school

Answers

You see what the average is in each class. (Divid students and classes) and add them together and divid by four. You should get 18 if you round to the whole number.

find the mean of the integers
-16,-27,21,-19,14,-3

Answers

To find the mean all you have to do is add all the numbers...
you should get -30
 and divide by a number of numbers, there are 6
 so -30/6 is -5

80 divided in a ratio of 3:2

Answers

The correct answer is:  " 48:32 " .  
__________________________________________Explanation:
__________________________________(3*80) divided by (3+2) = 240 ÷ 5 = 48 ;
__________________________________ (2*80) divided by (3+2)  = 160 ÷ 5 = 32 ;
__________________________________
So; the answer is:  " 48:32 " .
__________________________________

joseph tweets 13 times a day. define each variable and write an algebraic expression to describe the number of posts after any given number of days

Answers

Let y = the total amount of tweets Joseph sends.

Let x = how many days have passed.

y = 13x.

If you were to plot this as a line, your first and second points would be (1,13) and (2,26), respectively.

Which are solutions to y=x-4? Choose all correct answers. (4,0), (3,-1), (6,3), (2,-4)

Answers

The correct answers are (4,0) and (3, -1)

The coordinates (4, 0) and (3, -1) represents the solution of the function f(x).

We have a function -

y = f(x) = x - 4

We have to identify the possible solutions of this function from the ones mentioned.

What do you understand by the Solution of a function -y = f(x)?

The solution of the function is the possible values of x (say a) for which f(a) equals to y.

According to the question -

y = f(x) = x - 4

Case 1 : P(4, 0)

0 = 4 - 4 = 0

P(4, 0) represents a solution

Case 2 : P(3, -1)

-1 = 3 - 4 = -1

P(3, -1) represents a solution

Case 3 : P(6, 3)

3 = 6 - 4 ≠ 2

P(6, 3) does not represents a solution

Case 4 : P(2, -4)

-4 = 2 - 4 ≠ -2

P(2, -4) does not represents a solution

Hence, the coordinates (4, 0) and (3, -1) represents the solution of the function f(x).

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what is the answer to 38.22÷2.6 and how would you show your work

Answers

answer is 14.7 hope this helps you

in a local coed softball keague, male to female ratio is 6:6. if there is 160 players in the league, how many are female?

Answers

80. Bc a 6:6 ratio is also a 1:1. So half of 160 them would be female.

Lucy's final exam has true/false questions, worth 2 points each, and multiple choice questions, worth 3 points each. Let x be the number of true/false questions she gets correct, and let y be the number of multiple choice questions she gets correct. She needs more than 90 points on the exam to get an A in the class. Using the values and variables given, write an inequality describing this.

Answers

True/False questions = 2 points each(x).
Multiple choice questions = 3 points each(y).
She needs more than (>) 90 points.

2x + 3y > 90
2x + 3y > 90

Use the term LEG.

L - Least
E-equal
G- Greater

what is 4 1/2 + 3 3/4

Answers

8 1/4. hope that helped

Evaluate for x = 2.

(12x + 8)
4
A) 4
B) 5
C) 6
D) 8

Answers

(12x + 8) /4
= [12(2) + 8] / 4
= (24 + 8)/4
= 32/4
= 8

answer
D) 8
The answer would be 
D) 8

A survey was conducted in local town on modes of transportation to work. The following circle graph shows the number of people who utilize each mode of transportation. If 320 people were surveyed, about how many of them would be expected to take a bus to work?

A. 42

B. 112

C. 130

D. 82

Answers

the numbers in ur circle add up to 120.....so the ones that took the bus were 42...

42/120 = x / 320...42 bus riders to 120 ppl = x bus riders to 320 ppl
cross multiply
(120)(x) = (42)(320)
120x = 13440
x = 13440/120
x = 112 <===

or u can also do it this way...
42/120 = 0.35 = 35%....so 35% took the bus
35% of 320 = 0.35(320) = 112 <=

What is the domain of the function g(x)=5^2x?
A-x>0
B-x<0
C- all real numbers
D- all positive real numbers

Answers

The domain of a function is a set of values that will map the function to a set of range. 

for function [tex]g(x)=5^{2x}[/tex] the domain can be any numbers, for example:

[tex]g(0)=5^{2*0}=5^0=1[/tex]
[tex]g(3)=5^{2*3}=5^6=15625[/tex]
[tex]g(-4)=5^{2*-4}=5^{(-8)}= \frac{1}{390625} [/tex]

Answer: C - all real numbers

joshua swims 25 meters in 1 minute.Draw a graph of meters swam versus time.Find the value of the slope and interpret it in words

Answers

25/1, so your value of the slope is 25. Interpretation into words: For every minute passed, Joshua swims 25 meters.

Hope this helps you.

Answer:

Given,

The number of meters covered by Joshua in 1 minute = 25 meters,

So, the number of meters covered by him/her in x minutes, ( say y ) = 25x minutes,

⇒ y = 25x,

Which is the equation of line passes through origin,

If x = 1, y = 25,

If x = 2, y = 50,

So, by joining the points (1, 25) and (2,50) we will get the graph,

∵ Slope of a line y = mx + c is m,

By comparing,

The slope of the above line is 25 that shows the rate of change in meters per minute.

Note : x ≥ 0, because number of minutes can not be negative.

What is the estimate of 2,308 times 9

Answers

estimate for thousands: 2000 x 9 = 18000
estimate for hundreds: 2300 x 9 = 20700
estimate for tens: 2310 x 9 = 20790
estimate for ones: 2308 x 9 = 20772

hope this helps
ik the answer its 20,772 because
i just keep adding on like 2,308+2,308=4,616

Convert to the given unit. 40 m to cm A. 0.4 cm B. 4 cm C. 400 cm D. 4000 cm

Answers

It's D because there are are 100 cm per m and so 40*100 = 4000

Final answer:

To convert 40 meters to centimeters, multiply by 100, since there are 100 centimeters in a meter. The result is 4000 centimeters.

Explanation:

To convert 40 meters to centimeters, we need to determine the correct conversion factor between meters and centimeters. Since we are going from a larger unit to a smaller unit, we will multiply.

There are 100 centimeters in one meter, so we use this as our conversion factor.

The conversion is as follows:

40 m × 100 cm/m = 4000 cm

Therefore, 40 meters is equal to 4000 centimeters.

what is the square root of 4 multiplied by 16

Answers

the square root of 4*8=64 is 8
2 x 2 = 4 x 16 = 64
or
 2
√4 = 2 x 16 = 32 

What is the ratio 45:75 simplified

Answers

3:5, divide both sides of the ratio by 15. Hope it helped:)
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