Mathematics Middle School

Find the possible values of n in the inequality -3n<81

A. n<27

B. n>-27

C. n=-27

D. n=27

Answers

Answer 1
-3n < 81...divide both sides by -3, and change the inequality sign
n > -81/3
n > - 27 <==

** in an inequality, if u divide/multiply by a negative number, u have to change the inequality sign

Related Questions

luca has 72 baseball cards. this is 8 times as many as han has.how m

Answers

If Luca has 72 baseball cards, Han has 9 baseball cards. 
Han has 9 Basball card.
9 x 8 (8 times as many) = 72 cards (lucas cards)

Question : estimate the square root of 188 to the nearest hundredth

Answers

The answer is 13.7 and rounded to the nearest hundredth is 14
The answer would be 13.7113092008 but you would just put 14

not sure! help! please

Answers

[tex] \dfrac{ \frac{x}{4} + \frac{1}{8} }{ \frac{x^2}{4} } = \vspace{3mm} = \dfrac{ \frac{2x}{8} + \frac{1}{8} }{\frac{x^2}{4}} \vspace{3mm} = \dfrac{ \frac{2x+1}{8} }{\frac{x^2}{4}} \vspace{3mm} = \dfrac{2x + 1}{8} \times \dfrac{4}{x^2} \vspace{3mm} = \dfrac{2x + 1}{2x^2}[/tex]

A group of 4people share 1/2 pound of almonds how many pounds of almonds does each person get

Answers

0.125 pounds or 1/8 pound

Answer:

each person gets 1/8 pounds of almonds

Step-by-step explanation:

Four persons will divide ½ pound of almonds in four pieces, one piece for everyone, so translating this to an equation is:

X = [tex]\frac{1}{2}[/tex] ÷ 4

Where X represent how much of almonds will have everyone.

For divide fractional numbers we do a multiplication in cross, that means that the higher number in the first fraction will be multiplicated with the lowest number of the second fraction ( if the second number is not a fraction, we will assume that have a the number 1 is the lowest part) and the lowest number of the first fraction will be multiplicated with the highest number of the second number.

Then, we can rewrite the initial equation and solve as:

X= [tex]\frac{1}{2}[/tex] ÷ [tex]\frac{4}{1}[/tex]

[tex]X=\frac{1*1}{2*4} = \frac{1}{8}[/tex]

So, each person is going to get 1/8 pounds of almonds.

Which of the following is a rational number? A.√2 B.√3 C.√4 D.√5

Answers

it’s C square root 4

Determine the least common multiple of 12, 48, and 96.

Answers

the answer is 96 hope this helps!

The least common multiple (or LCM) of 12, 48, and 96 is 96. Hope this helped you.☺❤

A hand-held digital music player was marked down by 1/4 of the original price.
a. If the sales price is $128.00, what is the original price?
b. If the item was marked up by 1/2 before it was placed on the sales floor, what was that the store paid for the digital player.?

Answers

A) you would divide $128 by 4, getting $32. then add that to the original price, being $160.
B) you would divide $160 by 2, getting $80, then add those two together in order to find what it was marked up to, being $240. hopefully this helps

Answer:

a) The original price of music player is $170.66

b)If the item was marked up by 1/2 before it was placed on the sales floor, the store paid $213.325 for the digital player.

Step-by-step explanation:

Let the original price be x

A hand-held digital music player was marked down by 1/4 of the original price.

So, Discount = [tex]\frac{1}{4}x[/tex]

So, Sale price =[tex]x-\frac{x}{4}=\frac{3x}{4}[/tex]

We are given that  the sales price is $128.00

So, [tex]\frac{3x}{4}=128[/tex]

[tex]x=\frac{128 \times 4}{3}[/tex]

[tex]x=170.66[/tex]

a) The original price of music player is $170.66

The item was marked up by 1/2 before it was placed on the sales floor.

So, Cost = [tex]170.66+\frac{1}{4} \times 170.66[/tex]

Cost = [tex]213.325[/tex]

b)If the item was marked up by 1/2 before it was placed on the sales floor, the store paid $213.325 for the digital player.

how can we find the area of two-dimensional figures

Answers

You would multiply length and width. For example, if you have a 2 unit wide rectangle with 4 units of length, you would multiple 4x2 and get the area of the 2D figure.
Hope this was helpful, if there is anything else you need help with, please let me know.

how do you solve 3.2x0.75

Answers

I don't know how to explain but the answer is 2.4. 

Tyson and his friends go ice skating. Tyson must pay an initial fee of $18.30 plus $4.80 per hour. Write an equation for the cost (c)Tyson must pay after ice skating (h)hours. Solve the equation to find the cost to go ice skating for 4 hours. Write your answer as an ordered pair.

1. c= 18.30 + 4.80h (4,37.50)
2. c= 18.30 +4.80 + h (4.27.10)
3. C= 4.80h - 18.30 (4,0.9)
4. C= 4.80 + 18.30h (4,78.00)

Answers

1.c=18.30+ 4.80h (4,37.50)
The correct answer would be the first one, though it is written out of order, it is correct

A train is traveling from New Orleans to Memphis at a constant speed of 79 mph. New Orleans and Tennessee are 395.1 miles apart. How long will the train will the train take to reach Tennessee? Round to the nearest tenth.

Answers

time = distance / speed
time = 395.1 / 79
time = 5.0 hrs
Final answer:

Using the formula 'Time = Distance / Speed', the train traveling from New Orleans to Memphis at a constant speed of 79 mph would take approximately 5.0 hours to cover the distance of 395.1 miles.

Explanation:

The subject of this task is about calculating travel time given a certain speed and distance. In this case, we have a train traveling from New Orleans to Memphis at a constant speed of 79 mph, and we're asked to find out how long it would take for the train to cover the distance of 395.1 miles between the two cities.

The principle used to find this is a basic mathematical concept involving time, speed, and distance, represented in this formula: Time = Distance/Speed. For this question, the distance is 395.1 miles and the speed is 79 mph.

Applying this information into the formula, the calculation becomes: Time = 395.1 miles / 79 mph = 5 hours. Rounded to the nearest tenth, the time it takes for the train to get to from New Orleans to Memphis at a constant speed of 79 mph is approximately 5.0 hours.

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please help me answer the range and domain for graph 1 & 2. thank you !

Answers

the domain is -5 I think but I don't belive  is true

an aquarium holds 6 1/4 gallons of water the water level dropped to 4/5 of this amount how much water should be added to fill the aquarium

Answers

The answer is 1.25 gallons or 5/4 gallons

WHAT IS THE ANSWER TO #37 and #38 20 points!

Answers

37.

Call the amount David has, d.
Call the amount Jhumpa has, j.

Jhumpa has $55.
Jhumpa has $21 more than David.
$55 is $21 more than David has, so if you add $21 to David's amount, d, you get Jhumpa's amount, j

j = d + 21

38.

Let the temperature at noon be t.
The temperature fell 16 deg from noon, so you must subtract 16 from the temperature at noon to get the temperature at 3 pm. The temperature at 3 pm was -3 deg.
That means that t minus 16 must equal -3.

t - 16 = -3

Please help with number 33 and 34!

Answers

Problem 33

For each number, generate a factor tree. This is where you break a number down into smaller factors in a visual "tree" like style. The idea is to factor down to the prime factors and then you circle the common primes between each number. The values you circle are then multiplied if you circle more than one value in each tree. 

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

Problem 34

Xiao factored correctly but didn't pull out the GCF. So he didn't factor fully. In the case of 60 and 90, the GCF is 30. This is the largest shared factor between the two values. So we can pull out 30 to get
60+90 = 30*2+30*3 = 30*(2+3)

I'm basically using the distributive property in reverse. You can distribute the 30 back in and get 60+90 again. Notice how the inner stuff 2 and 3 have no factors in common other than 1. 

Kevin,Rob and Brad were playing poker. Kevin has 5 more chips in his pile than Brad. Rob has 3 times the amount of chips in his pile than brad. In total they have 125 chips. Determine how many chips are in each of their piles.


A) write an equation to find how many chips are in each of their


( please show work )

Answers

Lets say Brad has 'x' number of Chips Brad = x Kevin has 5 more chips than that of Brad. So Kevin = x + 5 Rob has 3 times more chips than that of Brad. So Rob = 3*x = 3x Total chips present = 125. So putting down the below equation Bob + Kevin + Brad = 125 x + (x + 5) + 3x = 125 5x + 5 = 125 Subtracting by 5 on both sides of equation 5x + 5 - 5 = 125 - 5 5x = 120 Divide by 5 on both sides of equation 5x/5 = 120/5 x = 24 So total chips possessed by Brad = x = 24 total chips possessed by Kevin = (x + 5) = 24+5 = 29 total chips possessed by Rob = 3x = 3*24 = 72 Brad has 24 chips, Kevin has 29 chips and Rob has 72 chips

What is 263874 rounded to the nearest 10000

Answers

30000 is the answer as it is ajove 20000 in comparison to rounding down

Giving 30 points to whoever helps me.Fasttttt and no wrong answers.

Answers

The answer is y = -3x + 10.
The rest is not linear since the rest is not in the form of y = mx +b (a type equation for a line).

Have an awesome day! :)

how to define trigonometric ratios

Answers

They are ratios of two sides of a right triangle and a related angle. Trigonometric functions are typically used to calculate unknown lengths or angles in a right triangle.

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

Formula for trignometric ratios.

[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]

The trignometric ratios are [tex]\downarrow[/tex][tex]\downarrow[/tex]

[tex]\begin{gathered}\begin{gathered}\begin{array}{||c|c|c||} \\ \rm sin \: A & \dfrac{\sf\:Opposite\: side\: of\: angle\: A }{\sf\:Hypotenuse \: } & \dfrac{\sf\:BC}{\sf\:AC} \\ \\ \rm cos \: A & \dfrac{ \sf\: Adjacent \:side \:of\: angle \:A }{\sf\: Hypotenuse} & \dfrac{\sf\: AB}{ \sf\: AC} \\ \\ \rm tan A & \dfrac{\sf\: Opposite \:side \:of \:angle\: A}{ \sf\: Adjacent \:side \:of \:angle \:A } & \dfrac{\sf\:BC}{ \sf\: AB}\\ \\ \rm cosec A & \dfrac{\sf\: Hypotenuse}{\sf\: Opposite\: side \:of\: angle\: A}& \dfrac{\sf\:AC}{ \sf\:BC } \\ \\ \rm sec A & \dfrac{\sf\: Hypotenuse}{ \sf\: Adjacent \:side\: of\: angle \:A}& \dfrac{\sf\:AC}{\sf\:AB}\\ \\ \rm cot A & \dfrac{\sf\: Adjacent \:side\: of \:angle \:A}{\sf\: Opposite\: side \:of\: angle\: A} & \dfrac{\sf\:AB}{ \sf\: BC} \end{array}\end{gathered}\end{gathered} \\ \\ - \bf \: Lucazz \: (brainly.com)[/tex]

Refer to the picture for better understanding.

I need help ASAP i'm doing math and we are do Addition with mixed numbers

A chemist mixes 2 3/5 g or an element and 16 4/9 g of another element. When the two are mixed,what is the total mass in simplest form?

A) 18 1/2 g
B) 18 2/45 g
C) 19 2/45 g
D) 18 1/4 g

Answers

You can add the whole numbers as is.

2 + 16 = 18

Add the fractions with the same denominator.

Find the common denominator between 5 and 9.

The common denominator should be 45.

Write both fractions with a denominator of 45.

3/5 → 27/45

4/9 → 20/45

Add the new fractions as is:

27/45 + 20/45 = 47/45

Write 47/45 as a mixed fraction.

47/45 → 1 2/45

Add both the whole number and the mixed fraction.

18 + 1 2/45 = 19 2/45

Solution: C) 19 2/45g

The answer is 19 and 2 45ths g trust me this is the answer

Step-by-step explanation:

There are 112 seats in a school auditorium.There are 7 seats in each row.There are 70 people seated,filling up full rows of seats.How many rows are empty?


PLEASE HELP ME

Answers

Answer:

6 rows empty

Explanation:

1127=16 total rows

707=10 rows full

16−10=6 rows empty


 there is going to be 6 empty rows

3.93 is equivalent to how many tenths

Answers

There are 39 tenths in 3.93.

In the 2008 election,there was 28 “blue” states and 22 “red” states. Express the “red” and “blue” states as fractions, in lowest terms, of the total number of states and also in decimals.

Answers

 28 “blue” states and 22 “red”
total = 28 + 22 = 50

blue = 28/50 = 14/25 (in lowest terms)  = 0.56 (decimal)
red = 22/50 = 11/25 (in lowest terms) = 0.44 (decimal)
Final answer:

In the 2008 election, the fractions of 'blue' and 'red' states when expressed in lowest terms were 14/25 and 11/25 respectively. In decimal form, these values are 0.56 and 0.44.

Explanation:

When solving fractions in mathematics, there are straightforward steps to follow. In the context of the 2008 election with the “red” and “blue” states, this means calculating the fraction of each in relation to the total number of states which is 50 in the US. The total number of red states was 22 and the total number of blue states was 28.

To express this as fractions we utilize the simple fraction formula of Part/Whole. For the blue states, the fraction becomes 28/50. To bring this to its lowest terms divide both the numerator and the denominator by their greatest common divisor which in this case is 2, so the fraction becomes 14/25.

Similarly, for the red states, we use the fraction formula where the red states are the part (22) and the whole is all the states (50). This gives a fraction of 22/50 which simplifies to 11/25 when reduced to lowest terms.

When these fractions are expressed as decimals, 14/25 equals to 0.56 while 11/25 equals to 0.44.

Learn more about Fractions and Decimals here:

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Which equation is in standard form?



A)3y + 4x = 10

B)3y = -4x + 10

C)4x + 3y = 10

Answers

standard form

C)4x + 3y = 10
-------------

The answer is c because the variables go x y and there are only variables on one side

What is the graph of y=-9

Answers

It's a horizontal line y = -9.


Look at the picture.


Answer: B.

What is the relationship between gross pay and net pay?

Answers

Gross Pay is the total amount of money you get before taxes or other deductions

Net Pay is the amount of pay remaining after deductions have been made (for example, taxes, payment for health-care, etc)

hope this helps :D

There are three shelves. Each has 28 books. There is also a stack of books. There are a total of 85 books. What is the equation that represents the situation

Answers

Final answer:

The equation representing the total number of books, including those on three shelves and in a stack, is 84 + x = 85. By solving this equation, we find that there is 1 book in the stack.

Explanation:

The question involves formulating an equation to represent the total number of books given the number of books on shelves and in a stack. Since there are three shelves each with 28 books, we first calculate the total number of books on the shelves. Then, we let x represent the number of books in the stack. The equation that represents the total number of books is:

3 shelves × 28 books per shelf + x books in the stack = 85 books total

This simplifies to:

84 + x = 85

To solve for x, we subtract 84 from both sides:

x = 85 - 84

Thus, x = 1, meaning there is 1 book in the stack.

A 6-pound watermelon costs $2.40 before a 30% discount. Which equation would allow you to find the discounted price of the watermelon?

Answers

That equation would look like this:

2.4 - 2.4 * .3 = p

p = price
The unit price of watermelon is

$2.40
--------- = $0.40/lb.
  6 lb

The discounted price of the watermelon would be (1.00-0.30)($0.40)

= 0.70($0.40) = $0.28/lb

Help me on the last two

Answers

6.5 is suppose to be on the inside of the radical sign.

what is the value of x in the equation 8x-48 when y=4

Answers

Your equation is in the form

y = mx + b

4 = 8x - 48

Can you solve for x now?
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