Mathematics Middle School

-2/3×1/2×-6/7=
please help

Answers

Answer 1
12/42 is the answer. 

Related Questions

6 points! Giving brainliest to the best answer!!!!
Reporting any silly or incorrect answers.


A car travels 183.75 miles in 5 hours and 15 minutes. How fast did it travel. (put your answer in mph).

Answers

The answer needs to be in mph, or "miles per hour", so let's convert "5 hours and 15 minutes" to pure hours (with no minutes attached)

Since there are 60 minutes in an hour, this means that 15 minutes = 15/60 = 1/4 of an hour (quarter of an hour). I'm going to convert the fraction 1/4 into decimal form 0.25; use a calculator or long division to compute this.

Therefore,
5 hours and 15 minutes = (5 hours) + (15 minutes)
5 hours and 15 minutes = (5 hours) + (0.25 hours)
5 hours and 15 minutes = (5+0.25) hours
5 hours and 15 minutes = 5.25 hours

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

The car travels 183.75 miles (given) for 5.25 hours (value computed above). Use the formula shown below to find the speed or rate

speed = distance/time
s = d/t
s = 183.75/5.25
s = 35

Note: your math book might use "r" instead of "s".

So the speed of the car is 35 miles per hour

sara nick and robin were collecting cans for a recycling project . sara collected 5 times as many cans as robin . nick collected 6 times as many cans as robin . the 3 children collected a total 216 cans . how many cans did they each collect?

Answers

r = robins cans
s = sara's cans
n = nick's cans
T = total cans

s = 5r
n = 6r
T = 216 = s + r + n

we sub in the first two equations into the first

216 = 5r + 6r + r
216 = 12r
r = 18
sub this back into equations 1 and 2

thus

r = 18
s = 90
n = 108

Quinn runs 3 miles 3 times every week. How many miles does Quinn run in 6 weeks

Answers

54 miles. 3 miles 3 times every week. Multiply those two and you get 9 miles total each week, times the week number (6).
He ran 9 miles a week so times the 6 weeks is 54

Use long division to convert the rational number 4/9 to its equivalent decimal form. In your final answer, include all of your work.

Answers

see the attached picture for solution:

Which is the best estimate for the sum of 31,096 and
58,721?

Answers

89,800 because you round to the nearest hundred and add them

The teacher separated her class of twenty-eight student into two group. one group has 4 more than twice as many students as the other group. how many students are in each group?

Answers

You can use a system of equations.
x=group 1
y=group 2

x+y=28
2x+4=y

Isolate the variable in equation 1.

y=-x+28

Substitute it into equation 2.
-x+28=2x+4

Solve.
-3x=-24
x=8

Substitute it into one of the equations for y.
-x+28=y
-8+28=y
y=20

There are 8 students in one group and 20 students in the other.

Hope this helps!
x+y=28
x=28-y

x=4+2y
28-y=4+2y
28-4=2y+y
24=3y
24/3=y
y=8
x+y=28
x+(8)=28
x=28-8
x=20
(20)=4+2(8)
20=4+16
20=20
one group=20, other group=8

1. Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime factors? Why?
2.Give and example of how prime factorization could be used in the real world

Answers

Composite number is defined as a number that can be divided by numbers aside from 1 and by itself.

Prime number are numbers that only has a factors of 1 and itself.

It is very possible for a composite number to have more than one prime factorization. But, it is not possible for a number to not have a prime factor. 

When you factorize a number, you break it down into its most basic factors and these basic factors are all prime numbers.

Prime factorization is basically breaking down numbers to its most basic factors. It can be used in everyday living especially when we deal with numerical transactions like money and values. 


what is the sum of three consecutive odd integers is 75?

Answers

odd integers are 2 apart
they are n, n+2, n+4

the sum is 75

n+n+2+n+4=75
3n+6=75
minus 6 both sides
3n=69
divide both sides by 3
n=23
n+2=25
n+4=27

the integers are 23,25,27

Sam has 19 1/2 meters of rope to make jump ropes. He needs 3 1/4 meters for each jump rope.

How many jump ropes can Sam make?


A. 6

B. 6 1/4

C. 6 1/2

D. 7

Answers

This answer is A. 19.5/3.25=6

If r is five less than three times l, then r = A)3l - 5 B)5 - 3l C)5l - 3 D)3(l - 5)

Answers

the answer is A) 3I-5

Answer:  The correct option is

(A) [tex]r=3l-5.[/tex]

Step-by-step explanation:  Given that r is five less than three times l.

We are to write the expression for r.

We have

5 less than three times l can be written as follows :

[tex]3\times l-5=3l-5.[/tex]

Since this is equal to r, so the expression can be written as

[tex]r=3l-5.[/tex]

Thus, the required answer is [tex]r=3l-5.[/tex]

Option (A) is CORRECT.

-4+6(-4x+3) combining like terms & distributive property

Answers

After using distributive property and combining like terms the answer is -2

-4 + 6 (4x+3)

Disribute 6 into both numbers in the parenthesis. So that means...

6 x 4x = 24x

6x3 = 18

Your new expression is:

-4 +24x +18

Combine ALL like terms:

-4 + 18 = 14

New Expression:

14 + 24x

And since you don't have any equal sign, that's as much as you can do to simplify the expression.

which number has a 2 in position where it represents 10 times as much as the 2 in 4,523 a. 241 d. 612 c. 928 b. 2,175

Answers

A. 241

The 2 in 4,523 is 20.
20 times 10= 200.
So the answer has to have a 2 in the hundreds place.
Final answer:

The number 2,175 is the correct answer because its 2 is in the 'hundreds' place which is 10 times as much as the 2 in the 'tens' place of the number 4,523.

Explanation:

In the provided options for numbers, we are to find a number which has a 2 that represents 10 times as much as the 2 in 4,523. In number 4,523, the number 2 represents '20', that is, it is in the 'tens' place. Therefore, we are looking for a number where 2 is in the 'hundreds' place as the 'hundreds' place is 10 times the 'tens' place. From the options given, only number 2,175 fits this criterion as in this number, 2 is in the 'hundreds' place which is 10 times as much as the 'tens' place.

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what is 5 1/2 minus 3 1/4

Answers

5 1/2 - 3 1/4

11/2 - 13/4

22/4 - 13/4 = 9/4

your answer is 2 1/4

hope this helps
Hello There!

All you do is make them improper fractions, make the denominators then multiply.
You'd get 2 1/4

Hope This Helps You!
Good Luck :)

A ski club had 146 members. Each member paid $30 a month for training fees. How much did the club collect in fees for the year? Show your work.

Answers

The club will collect $52,560 in fees for the year
you would multiply the number of member by how much they pay a month to find the monthly income. then multiply the monthly income by 12 to find the yearly income

Men in the age groups of 18-34 years need to be to run a marathon in 3 hours and 10 minutes to qualify for the boston marathon how many seconds is this?

Answers

11,400 seconds
You would take 3 hours to minutes which is 180 then add the following 10 minutes and convert it to seconds.

This would be 11,400 seconds

How many segments is 75 broken into? Use this to figure out the value of each segment

Answers

it will be broken into 5

Shown in the figure is part of a design for a water slide. Find the total length of the slide to the nearest foot, if α = 25°, β = 31°, a = 35 ft, and b = 170 ft.

Answers

let L be the total Length, so L=L1 + L2 + L3L1 is the first length
according to the figure L1 = a / sinβ = 25/ 0.57= 43.85 ft                                     L3= a/sinα = 25 / 0.42=59.5 ft, for L2=b -L1-L3=96.62
so the total length is L=L1 + L2 + L3=  200ft

an architect is designing a rectangular greenhouse. Along one walks is a 7-ft storage area and 5 sections for different kinds of plants. On the opposite wall is a 4-ft storage area and 6 sections for plants. Al of the sections for plants are of equal length. What is the length of each wall ?

Answers

17+2n+=21 +2n is no solution

Answer:

The length of each wall is 22 ft.

Step-by-step explanation:

Consider the provided information.

It is given that the length of each section of plants is equal.

Let the length of each plant is x.

Thus, the length of each side is 7-ft storage area and 5 sections for different kinds of plants. i.e.

Length of one side = 7 + 5x

Similarly, on the opposite wall is a 4-ft storage area and 6 sections for plants. i.e.

Length of opposite side = 4 + 6x

For better understanding refer the figure 1:

As we know in a rectangle opposite sides are equal, thus.

7 + 5x = 4 + 6x

Solve for x.

7 - 4  =  6x-5x

x = 3

Thus, the length of one side is:

7 + 5(3) = 7 + 15 = 22 ft

Hence, the length of each wall is 22 ft.

Note: it is not possible to find the length of other two wall as there is no information related with them.

A number is between 17 and 22. It has prime factors of 2​, and 5. What is the​ number?

Answers

The number would be 20 because these are factors of 2... 2,4,6,8,10,12,14,16,18,20 and factors of 5.... 5,10,15,20 they both are factors of 20. So your answer would be 20. Just to make sure... let's try 17 well it can't be a factor of 2 because it's an odd number and we couldn't do 18 because it's not a factor of 5. We can't do 19 because it's not a factor of 2 or 5. 20 is a factor of both. 21 isn't a factor of 2 or 5. Lastly we have 22.. well it's a factor of 2 but not a factor of 5.
Final answer:

There is no number between 17 and 22 that has prime factors of 2 and 5 because the products of these numbers or their powers don't fall within the range of 17 and 22.

Explanation:

The question is asking for a number that is between 17 and 22 and has prime factors of 2 and 5. Since 2 and 5 are prime numbers, their products could be solutions. However, the least product of 2 and 5 is 10 which is not between 17 and 22. If we consider the product of the power of these numbers such as 2² = 4 and 5² = 25, still we don't have a number that falls within the 17 and 22 range. Therefore, there is no number that is between 17 and 22 that has prime factors of 2 and 5.

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So far, 37 miles of a new highway have been completed. This is one mile less than two thirds of the entire length. How long will the new highway be when complete?

Answers

37 = 2/3x - 1
37 + 1 = 2/3x
38 = 2/3x
38 / (2/3) = x
38 * 3/2 = x
114/2 = x
57 = x <=== when complete, the highway will be 57 miles
Final answer:

The total length of the new highway, when complete, will be 57 miles.

Explanation:

The question states that 37 miles of a new highway have been completed and this distance is one mile less than two thirds of the entire length of the highway. To solve this problem, we need to write an equation using the given information and solve for the variable representing the total length of the highway.

Let's denote the total length of the highway as 'x'. According to the problem, two thirds of this length minus one mile equals 37 miles. Forming an equation, we can write (2/3)x - 1 = 37.

To solve for 'x', first add 1 to both sides of the equation to get rid of the '-1' on the left, that gives us (2/3)x = 38. After, to completely isolate 'x', multiply both sides of the equation by the reciprocal of 2/3, which is 3/2. Doing this results in 'x' = 38 * (3/2) = 57 miles.

Therefore, the new highway will be 57 miles long when complete.

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Help me ASAP!!!

(64 ÷ -4) ÷ (-2)

Answers

Just do PEMDAS

[tex]parentheses \\ exponents \\ multiplication \\ division \\ addition \\ subtraction [/tex]

In this problem we're using: [tex]parentheses [/tex] and [tex]division [/tex]

So, ([tex]64 [/tex]  ÷ -4) ÷ (-[tex]2[/tex])
[tex] \frac{64}{-4} = -16 [/tex]
Problem becomes: [tex] \frac{-16}{-2} [/tex]
Answer: [tex]8[/tex]

good luck on your assignment and enjoy your day! 

~[tex]MeIsKaitlyn :)[/tex]

4 divided by 10.2 =
Please help me

Answers

4 divided by 10.2 equals 0.3921568627

round to the nearest hundredth

0.39
that is equal to 2.55

How to calculate a 20% tip from a $25.50 bill

Answers

Easy you just multiply .20 with 25.50
you multiply 25.50 x .20 and get 5.10. You add the 5.10 to 25.50 and get $30.60

I REALLY NEED HELP PLEEEASS Evelyn has $524.96 in her checking account. She must maintain a $500 balance to avoid a fee. She wrote a check for $32.50 today. Write and solve an inequality to solve for the least amount of money she needs to deposit to avoid a fee.
524.96 − 32.50 + x ≥ 500; x ≥ $7.54
524.96 − 32.50 + x ≤ 500; x ≤ $7.54
524.96 + 32.50 − x ≥ 500; x ≥ $57.46
524.96 + 32.50 − x ≤ 500; x ≤ $57.46



Thank you

Answers

the answer is the first one. 524.96 - 32.50 + x ≥ 500; x ≥ $7.54

The answer is A, because I said so and Im Albert Einstein´s nonrelative


Segment PQ bisects segment ST at point R.

SR=2x+2 and ST=40

Find the length of segment SR.

a
SR=9
b
SR=40
c
SR=36
d
SR=20

Answers

2(2x+2)=40, 4x+4=40, 4x=36, x=9..plug in 9..
2x+2, 2×9+2, 18+2, 20=sr


or simply 40÷2=20

Answer:

2(2x+2)=40, 4x+4=40, 4x=36, x=9..plug in 9..

2x+2, 2×9+2, 18+2, 20=sr

Step-by-step explanation:

(4.9 x 10^-2) (9.80 x 10^2) = _____

Answers

It kinda like scientific notation here's what you need to do:

4.9×10^-2 and 9.80×10^2 ( find the scientific notation)

.0049 for the first one

980. for the second one

Then you multiply:

.0049×980.=4.802

Your answer is 4.802

What is the sum of -2.16 and -1.75

Answers

-3. 91 is the sum of -2.16 and -1.75
-3.91 is the sum between -2.16 and -1.75

Use the rule y = -x + 7 to fill in the blank.

If (-1, y) is on the graph, then y =

Answers

Answer:

k no Im just joking it is y=6

Step-by-step explanation:

Final answer:

Using the rule y = -x + 7, when x is -1, the value for y in (-1, y) is 8.

Explanation:

The rule given is y = -x + 7. If we insert x = -1 into the formula, we get y = -(-1) + 7, which simplifies to y = 1 + 7 and then further reduces to y = 8.

So, when (-1, y) is on the graph of the function, y equals to 8.

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the school fun fair made 1,768 on games and 978 on food sales. how much money did the fun fair make on games and food.

Answers

The school made 2746 dollars. 
The answer is 2,746.

You roll a six sided die. What is the probability of rolling a 1 or 2?

Answers

A = number of ways to roll a 1 or a 2
B = number of ways to roll the six-sided die

In this case, 
A = 2 (since there is only one copy of '1' or '2')
B = 6 (because there are 6 sides)

So,
Probability of rolling a 1 or 2 = A/B
Probability of rolling a 1 or 2 = 2/6
Probability of rolling a 1 or 2 = 1/3

Answer: 1/3
(this is approximately equal to 0.333)
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