7th grade math help me please :))

7th Grade Math Help Me Please :))

Answers

Answer 1

Answer:

a) 23x

b) 8n

c) -6y

d) -17w

Explanation:

When combining like terms, if there is an addition operator, add both coefficients and carry the variable over. If there is a subtraction operator, subtract both coefficients and carry the variable over. Remember, you can only combine like terms if the variable, and exponent are the same. The addition and subtraction symbols are examples of an operator used in arithmetic. For example, 9x + 14x could be like adding 9 objects and 14 objects together, you have 23 objects total because 9 + 14 = 23. When you add negative numbers, it is like subtracting. When you subtract negative numbers, it is like adding. Negative just means opposite.

a) 9x + 14x = (9+14)x = (23)x = 23x

b) -2n - 10n = (-2+10)n = (8)n = 8n

c) 8y - 14y = (8-14)y = (-6)y = -6y

d) -6w - 11w = (-6-11)w = (-17)w = -17w

Answer 2

Answer:

a: 23x

b: 8n

c: -6y

d: -17w

Step-by-step explanation:

you just add/subtract the numbers then add the variable at the end


Related Questions

express 148.502 in standard form
Pls as soon as possible

Answers

Answer:

1.48502 × 10²

Step-by-step explanation:

A number expressed in standard form is

a × [tex]10^{n}[/tex] ( 1 ≤ a < 10 and n is an integer )

Given

148.502 ← express as a number between 1 and 10

1.48502

To obtain the original number we require to multiply by 100 , that is 10²

Thus

148.502 = 1.48502 × 10²

Answer:

[tex]1.48502 \times {10}^{2} [/tex]

Step-by-step explanation:

To convert to standard form, move the decimal point until there is one digit to the left of the decimal point.

Since the decimal point moves to the left, the exponent value goes up. If the decimal point moves to the right, the exponent value gpes down.

In this case, since the decimal point moves to the left twice, then the exponent goes up by 2.

Hope this helps!

Help me if your good with math I’ll give brainliest

Answers

Answer:

Step-by-step explanation:

x^3=27

x=sqrt27=3

x=3

Answer:

A) x=3

Step-by-step explanation:

you can type it in the calculator like this: [tex]\sqrt[3]{27} =3[/tex]

Tell whether the angles are complementary or supplementary. Then find the value of xx.

Answers

Answer:

2x+3x+35 =180

5x+25=180

5x =180-25

5x =155

x= 155/5

x= 31

Line equations from point/slope

Answers

Answer:

The answer is

[tex]y = \frac{1}{4} x + 3[/tex]

Step-by-step explanation:

Plug in and solve the equation. We are trying to find the y-intercept:

[tex]y= \frac{1}{4}x + b \\ 2 = \frac{1}{4} ( - 4) + b \\ 2 = - 1 + b \\ \frac{ + 1 = + 1 \: \: \: \: \: \: \: \: }{3 = b} [/tex]

We found the y-intercept, so now we plug it in it's right full spot in the formula.

[tex]y = \frac{1}{4} x + 3[/tex]

Which statements accurately describe how to determine the y-intercept and the slope from the graph below?
(ANSWERS ARE ALSO IN A PHOTO)

Answers

Answer:

C) The third option. To find the y intercept move vertically, to find the slope, y2-y1/x2-x1

Step-by-step explanation:

Fitness R Us charges $58 to join the club. During January, the club has a markdown of 51% per joining fee. What is the fee in January? plz help me.

Answers

Answer:

100-51=49

49/100 x 58

= $28.42

Answer:

28.42

Step-by-step explanation:

the equation would be 58 times .49

58 times .49 is 28.42

Order the numbers from least to greatest 2.379, 2.164,2.538,2.386

Answers

Answer:

2.164, 2.379, 2.386, 2.538

Step-by-step explanation:

2.164<2.379<2.386<2.538

Answer:

2.164, 2.379, 2.386, 2.538 (least to greatest)

Step-by-step explanation:

The first number is the same so, all that you have to compare is what is after the decimal.

Hope this helped!! :)

Brainliest?!?!

Stay safe and have a wonderful day/night/afternoon!!!

Find 22÷(−2) need help

Answers

Answer:

-11...................

Answer:

-11

Step-by-step explanation:

22/2=11

its negative so make it negative

What is the surface area of the cylinder with height 3 cm and radius 6 cm? Round your to the nearest thousandth.

Answers

Answer:

113.097

Step-by-step explanation:

so Basically to find the area of this cylinder have to set up to equation ((2)6pi)3

first you multiply 2 x 6 getting you 12 then multiply it by pi which in mathematical terms is 37.7 multiplied by 3, getting you 113.097

which can be simplified to 113

The surface area of the cylinder with height 3 cm and radius 6 cm is 340 cm².

What is surface area?

The surface area of a figure is the number of unit squares it takes to cover the entire surface without gaps or overlaps. If a three-dimensional figure has flat sides, the sides are called faces.

Given that, the cylinder with height 3 cm and radius 6 cm, we need to find its surface area,

SA of a cylinder = 2 π × radius × (height + radius)

= 2 × 3.14 × 6 × (3+6)

= 2 × 3.14 × 6 × 9

= 339.12

≈ 340

Hence, the surface area of the cylinder with height 3 cm and radius 6 cm is 340 cm².

Learn more about surface area, click;

https://brainly.com/question/29298005

#SPJ2

Pleaseeeee someone helpppppp !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!

Answers

This one is very simple.

The triangle on the left has two equal sides, so the angle on the opposite side of that same triangle is also 52º. That angle is on a 180º line, so the angle right next to it has to be 180º - 52º, so 128º. The other two angles of that triangle are unknown, but still equal because of the sides being the same. So, subtract 128º from 180º to get 52º again, but divide it by two. The angle measurement of x = 26º

Find the degree of the polynomial -m^6-10m^3

Answers

Answer:

We conclude that:

The degree of the polynomial is 6.

Step-by-step explanation:

Given

Given the polynomial

[tex]-m^6-10m^3[/tex]

To determine

The degree of the polynomial

In order to determine the degree of the polynomial, we need to check the term with the highest of the degree with non-zero coefficients. The degree of an individual term is basically the exponent of the term.

In our case,

The exponents of the terms of this polynomial are, in order, 6, and 3.

Thus, the highest degree (larger exponent) of the term is 6.

Therefore, we conclude that:

The degree of the polynomial is 6.

find the perimeter......

Answers

Step-by-step explanation:

We know that perimeter is the sum of all sides

= 2x³ + 6x + 4x³ - 5x + 6x³ + x

= 12x³ + 2x

= 2x ( 6x² + 1)

Hope it will help :)❤

27 = -3x - 9 plssss helppp​

Answers

Answer:

x = 1-2

Step-by-step explanation:

27 = - 3x - 9

36 = -3x

-12 = x

x = -12

Step-by-step explanation:

27+9=-3x

36=-3x

36 divided by -3=x

-12=x

divide 12xy^3z^6 by 4x^5yz^12
a. 3x ^4y^2z^6
b. 3x ^5y^3z^6
c. 3x^5y^3/z^6
d. 3y^2/x^4z^6

Answers

Answer:

d

Step-by-step explanation:

because

12xy³z⁶/4x⁵yz¹²=3y²/x⁴z⁶

The division of (12xy³[tex]z^6[/tex])/ (4[tex]x^5[/tex]y[tex]z^{12[/tex]) is 3y²/ [tex]x^4[/tex][tex]z^6[/tex].

What is Polynomial?

A polynomial is a mathematical equation that solely uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables. Variables are sometimes known as indeterminates in mathematics.

Given:

(12xy³[tex]z^6[/tex])/ (4[tex]x^5[/tex]y[tex]z^{12[/tex])

Now, expand for the division

12/4= 3

x / [tex]x^5[/tex] = 1/ [tex]x^4[/tex]

y³ /y = y²

[tex]z^6[/tex] / [tex]z^{12[/tex]= 1/[tex]z^6[/tex]

So, the division is

(12xy³[tex]z^6[/tex])/ (4[tex]x^5[/tex]y[tex]z^{12[/tex])

= 3y²/ [tex]x^4[/tex][tex]z^6[/tex]

Learn more about Polynomial here:

   https://brainly.com/question/11536910

#SPJ2

A right rectangular prism has edges of 8 feet, 4 feet, and 1/2 foot. How many cubes with side lengths of 1/2 foot would be needed to fill the prism?

Answers

Answer:

Step-by-step explanation:

From the question we are told that

Edges of 8 feet, 4 feet, and 1/2 foot

Generally the volume V_p of the right rectangular prism is mathematically represented as

[tex]V_p=8*4*0.5[/tex]

[tex]V_p=16[/tex]

Generally volume of the cube V_c is mathematically given as

[tex]V_c =(\frac{1}{2})^3[/tex]

[tex]V_c =\frac{1}{6}[/tex]

Therefore total number of cubes is given as

[tex]V=\frac{V_p}{V_c}[/tex]

[tex]V=\frac{16}{\frac{1}{6}}[/tex]

[tex]V=96[/tex]

Write the equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x

Answers

Answer:

The equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x is [tex]\mathbf{y=-\frac{2}{3}x+3 }[/tex]

Step-by-step explanation:

We need to Write the equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x

The general equation in slope-intercept form is: [tex]y=mx+b[/tex] where m is slope and b is y-intercept.

Finding Slope:

Both the equations given are parallel. So, they will be having same slope.

Slope of given equation y= - 2/3x is m = -2/3

This equation is in slope-intercept form, comparing with general equation  [tex]y=mx+b[/tex] where m is slope , we get the value of m= -2/3

So, slope of required line is: m = -2/3

Finding y-intercept:

Using slope m = -2/3 and point (-3,5) we can find y-intercept

[tex]y=mx+b\\5=-\frac{2}{3}(-3)+b\\5=2+b\\ b=5-2\\b=3[/tex]

So, we get b = 3

Now, the equation of required line having slope m = -2/3 and y-intercept b =3

[tex]y=mx+b\\y=-\frac{2}{3}x+3[/tex]

The equation of the line in slope intercept form that passes through the point (-3, 5) and is parallel to y= - 2/3x is [tex]\mathbf{y=-\frac{2}{3}x+3 }[/tex]

Answer:

[tex]\displaystyle y = -\frac{2}{3}x + 3[/tex]

Step-by-step explanation:

5 = –⅔[–3] + b

2

[tex]\displaystyle 3 = b \\ \\ y = -\frac{2}{3}x + 3[/tex]

Parallel equations have SIMILAR RATE OF CHANGES [SLOPES], so –⅔ remains as is.

I am joyous to assist you at any time.

is -1 a irrational number

Answers

-1 is a rational number.
So no, -1 is not an irrational number

Answer: No -1 is not an irrational number.

Step-by-step explanation: The number 1 can be classified as a natural number, a whole number, a perfect square, a perfect cube, an integer. This is only possible because it is a rational number, not irrational.

BRAINLIEST!!!! Please say yes or no for number 13 and explain why. +15 points

Answers

Answer:

yes (answer in the comments) U^U

Step-by-step explanation:

Which of the following does not represent a proportional relationship?

A. Nicole earns $5 per hour. How many hours must she work to earn $100?
B. Frances walks 2.2 miles every 30 minutes. If she continues to walk at this rate, how far can she walk in 4 hours?
C. Juanita has 7 ceramic frogs in her collection. In addition, she will receive 3 ceramic frogs for her birthday each year, how many ceramic frogs total will she have in 10 years?
D. The earth rotates on its axis every 24 hours. How many rotations will the earth complete in 15 days?

Answers

C because Juanita needs 7 ceramic frogs

You only have to solve one of them but please explain how to do it because I have many more

Answers

85. Relative mins are at x=-1 and x=3; relative max x=1
As x > -infinity, y > infinity
As x > infinity, y > infinity

Originally, Juan borrowed $10, but his mother loaned him $3 more, so he borrowed a total of $13. He sells $25 worth of lemonade in his first week. How much money will he have left after he pays back his mother?

Answers

Answer:

$12

Step-by-step explanation:

Juan borrowed $10

His mother loaned him $3 more

= $10 + $3

= $13

He sold $25 worth of lemonade in the first week

If the pays his mother then the amount that will be left with him can be calculated as follows

= $25 - $13

= $12

Answer:

$12

Step-by-step explanation:

got it on edge

What two types of formulas can be used to represent a sequence?

Answers

Answer:

In this lesson, we'll be learning two new ways to represent arithmetic sequences: recursive formulas and explicit formulas. Formulas give us instructions on how to find any term of a sequence.

Step-by-step explanation:

(PLEASE HELP I WILL GIVE BRAINLIEST) Mr. Kircher has a coupon for 30% off to purchase a KV sweatshirt. The sweatshirt was originally priced at $40.
What is the amount of the discount that Mr. Kircher will save?

Answers

Answer:

$12

Step-by-step explanation:

30% of 40 = 12

Answer:

its 28.00

Step-by-step explanation:

trust me

Explain the purpose of statements and reasons in a formal proof.

Answers

Answer:

Find the explanation below.

Step-by-step explanation:

Statements simply state the theorem that is to be proofed. Formal proof in logical sequence connects the hypotheses to the conclusion reached.

Statements and reasons are important because they help to breakdown a theorem, showing in steps and stages how a conclusion was reached. They provide facts that convince the observer that the theorem is indeed true.    

Can someone help please

Answers

9514 1404 393

Answer:

  16.4

Step-by-step explanation:

The law of cosines is useful here. It tells you ...

  b^2 = a^2 + c^2 -2ac·cos(B)

  b^2 = 22^2 +10^2 -2·22·10·cos(44°)

  b^2 ≈ 267.49

  b ≈ √267.49 ≈ 16.35514

  b ≈ 16.4

Chance's family of 5 has 3 2/5 pizzas left over that they want to eat for dinner tonight. If they share the pizza equally, how much does each family member get?​

Answers

Answer: 17/25 pizza per each family member.

find the coordinates of the orthocenter for XYZ with X(-5,-1) Y(-2,4), Z(3,-1)

Answers

9514 1404 393

Answer:

  (-2, 2)

Step-by-step explanation:

The orthocenter is the intersection of the altitudes. The altitude lines are not difficult to find here. Each is a line through the vertex that is perpendicular to the opposite side.

Side XZ is horizontal, so the altitude to that side is the vertical line through Y. The x-coordinate of Y is -2, so that altitude has equation ...

  x = -2

__

Side YZ has a rise/run of -1/1 = -1, so the altitude to that side will be the line through X with a slope of -1/(-1) = 1. In point-slope form, the equation is ...

  y -(-1) +(1)(x -(-5))

  y = x +4 . . . . . . . . subtract 1 and simplify

The orthocenter is the point that satisfies both these equations. Using the first equation to substitute for x in the second, we have ...

  y = (-2) +4 = 2

The orthocenter is (x, y) = (-2, 2).

Hello will someone please help me with this i really need it!!

Answers

Answer:

It was the withdrawal of the Union troops from the South.

Step-by-step explanation:

The South could go back to blatant mistreatment and practically slavery without the oversight of the Northern troops- so all of the progress that was made was for nothing. That was when Reconstruction ended.

guess a number from 1 -10
ill mark u brainliest if u get it right

Answers

Answer:

7

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

PLEASEEEEEEEEEEEEEEEEEEEEEEE HELP ME!!!!

Answers

I’m pretty sure it’s 9/10 - 2/5. I’m sorry If it’s wrong
Other Questions
There were 1150 pounds of flour in the grain store. After most of the flour was sold, there were 230 pounds left. What was the percentage decrease of the grain stores flour? HELLLPPPP PLEASEeeee How do my educational choices connect with my long-term goals and vision for life? The ratio of green houses to white houses in Queens is 5 to 7. There are 63 white houses, How many green houses are there? solve x + 4y = 14 and 3x + 3y = 15 by elimination When is it patriotic to protest? 5/4y + 8 = 17.50Please Help me What are the Co constructors of a child's ecosystem? how affect reproductive strategy in an ecosystem Grace went on a road trip. She had 293 miles to drive on the first day. She was only able to drive 247.7 miles before she had to take a rest stop. What percent of the trip was she able to complete? Solve the equation, justify each step with an algebraic property. -11 = -12+ 2x +3 Bob's gift shop sold a record number of cards for Mother's Day. One salesman sold 24 cards, which was 20% of the cards sold for Mother's Day. How many cards were sold for Mother's Day? Write -0.37 as a quotient of integers to show that it is rational Why did Pope Gregory fight the practice of layinvestiture? Imagine that you are a worker in a Lowell mill in the nineteenth century. Write a letter (about 100 to 150 words) to your parents. Tell them about your life at Lowell and your experiences. You can use information from the sources in parts A and B as well as from the lesson. How much heat is required to change 48.5 liquid mercury (Hg) at 400 K to vapor at a 700 K? The boiling point of mercury is 629.88 K-88 kj-204 kj 16.2 kj 30 kj 29 kj What wisdom will Jonas gain from the memory of a rainbow In the crucible, the court realized that what they were doing was a mistake. They were condemning innocent people to death based on lies told by the girls. Paris brought news that Abigail was gone and that she stole some of his money. These issues rested heavily on those who were falsely accusing the people of witchcraft. However, Mr. Danforth sought to protect the court's reputation and so could not free the innocent people in spite of knowing the truth. They summoned Elizabeth to convince her husband, John, to confess to witchcraft. When the couple met, John found out some of the people had already confessed. However, some of his friends refused to comply. Help plz someone? Help!!!! Assume that Chris and Heather get married in 2019 and file a joint return. What is their taxable income and income tax