Mathematics Middle School

Help plz:

7. Add or subtract the following polynomials:
a. 5x^2 + 3y^3 - 4x^2 =
b. y^3 + 2y^3 - 8 + 2 =
c. 9 - 3x - 4x + 2x - 12 =
d. -6t + 4t^2 - 6 + 7t - 4t^2 =

Answers

Answer 1

Step-by-step explanation:

you will see, this is totally easy. so, once you understand that principle, I am sure you will agree with me that this costs more time putting it in here than just doing it yourself in the future.

you need to consider for addition and subtraction every variable combined with an exponent a different thing, a fruit for example.

you know exactly what to do, when you are being asked to add 3 apples to 2 apples, right ?

or, when are are asked to add 4 apples and 2 pears to 3 apples and 2 pears.

in the first case we simply get 5 (2+3) apples.

in the second case we get 7 (3+4) apples and 4 (2+2) pears.

and nothing else happens here.

we could call x² apples, y² pears, y³ plums, x kiwis, t strawberries, t² raspberries. and the constants could be another fruit or grams of sugar.

now, we simply combine the "fruits" that belong together. there is nothing more to this.

5x² + 3y³ - 4x² = x² - 3y³ (because 5-4 for x²)

y³ + 2y³ - 8 + 2 = 3y³ - 6 (1+2 for y³ and -8+2 constant)

9 - 3x - 4x + 2x - 12 = -5x - 3

-6t + 4t² - 6 + 7t - 4t² = t - 6 (4-4 for t², -6+7 for t)

Related Questions

Find the value of X and a missing angel in this triangle

Answers

Answer:

x=175

Step-by-step explanation:

175 person above is right pls mark Brainlest

6000 popcicle sticks and they cost 34.99$ how much would each popcicle be

Answers

177.477 I hope this has helped you!

Help plz:


13. Solve the following inequalities:
a. 3x - 3 > 6
b. 24x + 4 < 52
c. -2x - 2 < 8
d. 10x - 100 > 0

Answers

Answer:

[tex]3x - 3 > 6\\= 3x - 3\\=0x\\0x < 6\\\\24x + 4 = 28x\\28x < 52\\\\-2x - 2 < 8\\= -2x - 2\\= -4x\\-4x < 8\\\\10x - 100 > 0\\= 10x - 100 \\=-90x\\-90x > 0[/tex]<---- Why is -90x greater than 0?

because 90x > 0.

Step-by-step explanation:

hope this helped.

Answer:

a. = x > 3

b. = x < 2

c. = x > -5

d. = x > 10

Step-by-step explanation:

Solve means to find x.

a.

3x - 3 > 6

+3 each side

3x > 9

Divide by 3 each side

x > 3

b.

24x + 4 < 52

-4 each side

24x < 48

Divide by 24 each side

x < 2

c.

-2x - 2 < 8

+2 each side

-2x < 10

Divide by -2 each side (Causing the inequality sign to flip, dividing or multiplying by a  negative causes it to.)

x > -5

d.

10x - 100 > 0

+100 each side

10x > 100

Divide by 10 each side

x > 10

Mrs.Rose received a 35% discount on her cell phone. The price of her cell phone came out to be $180. How much was the original price of her cell phone?

Answers

Answer:

The original price of the cell phone is $514.29

Step-by-step explanation:

The answer is $514.29 because the equation to find the answer is :

Let x = the original price of the cell phone

$180 = Price after discount

So, 180 = x * 35/100

Multiply by its reciprocal on both sides so

180 (100/35) = x

18000/35 = x

514.29 = x

So the original price of the cell phone is $514.29

N'(-10,-15) is the image of N after a dilation with a scale factor of 5/4, centered at the origin. What are the coordinates of N?

Answers

When the point N is dilated, the coordinate of N changes to N'

The coordinate of point N is (8,12)

How to determine the coordinate of N

The given parameters are:

N' = (10,15)

k = 5/4

To calculate the coordinate of N, we make use of:

N * k = N'

So, we have:

N * 5/4 = (10,15)

Multiply both sides by 4

N * 5 = (40,60)

Divide both sides by 5

N = (8,12)

Hence, the coordinate of point N is (8,12)

Read more about dilation at:

https://brainly.com/question/3457976

PLZ HALP MEH WHAT"S AAAAAAAAAAAAAAAAAAAAAA

Answers

Answer:

A

Step-by-step explanation:

subtract 0.36 to get a alone

Answer:A

Step-by-step explanation:

We can rearrange the equation to solve for a:

[tex]0.36+a=13.3[/tex]

[tex]a=13.3-0.36[/tex]

[tex]a=12.94[/tex]

The answer is a.

Give me the answer please

Answers

Answer:

-2

Step-by-step explanation:

The line in the graph has a slope of 1/2. Perpendicular means the opposite sign and the reciprocal, so it would be -2.

-2 is the answer for the question you are welcome

Samuel and Jason spend 3/4 of their combined earnings from Wednesday to buy a gift. Use a problem solving model to determine if there enough left over from Wednesday's earnings to buy a card that costs $3.25? Explain.

Answers

Answer:

math

Step-by-step explanation:

no

Answer:

It is a division problem. 3.25 × 0.75 = 4.375

Step-by-step explanation:

They had $4.375 dollars, but then, they bought a gift card for $3.25 dollars. so, we must multiply 3.25 * 0.75.

hope this helps.

1. 0.12 x 105=
2. 45.3 x 4=
3. 99.2 x 82=
4. 37 x 0.93=
5. 1.67x 4=
6. 3.2 x 184=
7. 12 x 0.37=
8. 0.904 x 75=

Answers

1)12.6
2) 181.2
3) 8134.4
4) 34.14
5) 6.68
6) 588.8
7) 4.44
8) 67.8
Could of used calculator

what is 5\7 divided by 3\4=
wright the answer and show work.
thank you.

Answers

20/21 (WORK AND EXPLANATION PROVIDED)
the answer would be 20/21

you’d start off by multiplying the fractions but switch the 3/4 into 4/3
5 4
— x —
7 3

then multiply 5 x 4 = 20
and then multiply 7 x 3 = 21

which would be 20/21

Max has x dollars. Keisha has four more dollars than Max. Which anwsers are correct, choose few.

A. x

B. 4

C. 7

D. x + 7

E. x + 4

F. x + 3

G. r - 4

Answers

Answer: F

Step-by-step explanation:

I think B and E? Because we don't know how much Max has. So if she has just four more add it to x.

Jaime wants to know how fast she can type, so she times herself as she types a paper. The paper has 612 words in it, and Jaime types it in 9 minutes. What is her typing rate, in words per minute?

Answers

Answer:

612/9=68 words/minute

Step-by-step explanation:

Answer:

68 words per minute

Step-by-step explanation:

Since she types 612 words in 9 minutes, divide 612/9 and you get 68

To Check, do 68 x 9 and you get 612

75 percent of a number is 354. find the number

Answers

Answer: 75% of 472 is 354

Step-by-step explanation: you can figure this out by dividing 354 by 3 = 118, then you multiply that 118 by 4 = 472.

The answer to this is 75% of 472 is 354
because you start by dividing 354 by 3 = 118, then you multiply that 118 by 4 = 472.

This meal costs 11. The 5 coupon is applied, followed by a 7 sales tax rate. What is the total with the discount and tax?

Answers

This is probably wrong but my guess is 13 so maybe verify it but that’s my best!
The answer is 13.this is because 11-5=6 6+7=13

3(4 + x) = 45
What is x?

Answers

Answer:

x = 11

Step-by-step explanation:

3(4 + x) = 45

=> 12 + 3x = 45

=> 3x = 33

=> x = 11

Conclusion:

Therefore:

x = 11

Hoped this helped.

the x is 11 because 4+11 = 15 and 15x3= 45 .

PLS HELP ASAP DOING A TEST
A circular kitchen table has a diameter of 20 in. How much fabric is needed to cover the table top?

Answers

We know d=20, so we can divide this by 2 to find the radius.
r=20/2
r=10
With the radius, you can find the area by using this formula:
A=(3.14)r^2
When plugging this in you get:
A=(3.14)10^2
A=314

Gigi's home is located on the grid with the points (-6, 2), (-1, 2), (-7, 4) and (0, 4). She is planning to paint the entire roof of her home. Each unit on the coordinate grid represents 5 feet. Each can of paint can paint up to 45 feet of open space. How many cans of paint must Gigi purchase to paint the entire roof of her room?

Pls show work and explain!
Brainliest to the first person who gets the question right and explains it!

Answers

Answer:

Step-by-step explanation:

PLS HELP ME I REALLY NEED THIS URGENT!!!!!

Answers

-2 is the answer I hoped I helped

The answer is Positive 1/2. The lines is moving along the (P,P) positive, positive coordinates. *If the Y value is increasing the line is positive which it does.

What is (6/3×21/9)÷[8.9+2/4]×14×84

Answers

Answer:

The answer I got was 583.82

calculate the sum, divide and reduce, then calculate and you’ll get 27440/47

Write an algebraic expression for “three times the quantity q minus eleven.”

Answers

Answer:

[tex]3q-11[/tex]

Step-by-step explanation:

Answer:

3q - 11

Step-by-step explanation:

Read this phrase carefully.

(three times the quantity q minus eleven.)

"3 times the quantity q" means adding q three times or "3q"."minus 11" means subtracting 11 from "3q".

Conclusion:

Our expression created is 3q - 11.

Hoped this helped.

[tex]GeniusUser[/tex]

Good morning and night. Can anyone help me on this question?

I'm stuck on this question for khan that I need to master.

Answers

Answer:

X = Y x 3

Step-by-step explanation:

In the table, we can look at 5 and 15 as well as 11 and 33 and easilly tell that it has a correlation of tripling the number. To check our answer, all we must do is 8 1/3 x 3 and end up with 25

Answer:

→ y = 3x because 15 divided by 5 equals 3, 25 divided by 8 1/3 equals 3 and 33 divided by 11 equal 33 ( I hope you have a good day or night! and I also hope you get you homework correct as well:))))).

Which exspression is equivalent to 2(m - 5) + 6

Answers

The expression that is equivalent to 2(m - 5) + 6
is 2m - 4.
The given algebraic equation consists of
numbers, arithmetic operations, and variables.
The first thing to do is to open the brackets.
After that, we will sum up or subtract the like
terms.
Given that:
=2(m - 5) +6
=2m - 10 + 6
=2m - 4
Therefore, we can conclude that the expression
that is equivalent to 2(m - 5) + 6 is 2m - 4.

HELP! PLEASE!
• At store A, 3 pounds of apples cost $12.

• At store B, the cost is given by y = 2x where y is the cost in dollars and x is the number of pounds of apples.

• The cost of apples at store C is shown in the graph.

(don't worry about the graph I know how to do this one)

Answer the questions to find out which store's apples are the least expensive.

2. What is the unit price of apples at store B? How did you use the equation to find the unit price? (2 points)

Answers

Answer:

The unit price is the cost per unit of an item or the cost/price for each item.

1) 4$ per pound. By simplifying the proportion (constant ratio) between the cost, and the pounds of apples. 3 pounds of apples cost 12$ → 3/3 pounds of apples cost 12/3$ → 4 dollars for every pound.

2) 2$ per pound. By evaluating the rate of change (change in the y over x or dependent variable over independent) in the equation: y = 2x. y is the cost in dollars, and x is the pounds of apples. So there are 2 pounds (weight) of apples for every dollar.

3) 3$ per pound. Given a graph with a y scaled by 3, and an x scaled by 1 with a graph y = x or 1 unit up for every unit right. This must be equivalent to y = 3x. Where y is labeled as the cost in dollars, and x as the weight in pounds. So there are 3 dollars for every pound of apples.

4) Store B. Because 2 is less than 3 which is less than 4.

Please helptyank you

Answers

Answer: this is the answer

Step-by-step explanation: this then that then this

Someone help me with this please, I really need help, and it's due tmrw...PLEASE

Answers

Answer:

the 4.99 represents the fixed cost (the monthly cost)

Step-by-step explanation:

If she didn't download any music her monthly cost would be $4.99. Every song she downloads adds another $1.50 to the monthly cost.

Answer:

The cost to use the service for a month if no songs are downloaded.

Step-by-step explanation:

This is the original price, and the songs added add additional money to $4.99.

the amount of songs downloaded multiplied by 1.5 adds onto $4.99.

How many 1/8 tps can go into 1/8 cup?

Answers

Answer:

6 tps

Step-by-step explanation:

3 tsp = 1 tablespoons

16 table spoons = 1 cup

therefore 48 teaspoons = 1 cup

therefore 1/8th cup =6 teaspoons

Answer:

(1/8) cup = 6 U. S. teaspoons

Step-by-step explanation:

Do a quick Internet search.  Type '1 cup = teaspoons" into the address line as tho' you were doing a search.  Result:  1 cup = 48 U. S. teaspoons.

We want to know the teaspoon equivalent of 1/8 cup.  To get this, multiply both sides of the above equation by 1/8:

(1/8) cup = (1/8)(48 U. S. teaspoons), or  (1/8) cup = 6 U. S. teaspoons.

help look at pic pls

Answers

Answer:

A) -68

Step-by-step explanation:

The tape diagram represents an equation...

Write an equation to represent the image...

Answers

6+t=9

I think thats the answer, i forgor

Hopes this helps

Answer: try this for an example there are 6 boxes and you needed to make 9 whold you use 1.5 x 6 what does that equal yep 9

Step-by-step explanation: make me brainlist

SOLVE PLEASE WORTH 15 POINTS

Answers

I think it’s 20 I’m sorry if it’s wrong
20 I looked it up it’s 20

Please help me
Evaluate the expression when M=2

m²+29

Answers

Answer:

33

Step-by-step explanation:

If m=2, then you can rewrite it as 2²+29

2²=4

4+29=33

The answer is 33 because 2 to the 2nd power is 4 and 4 plus 29 is 33
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