use the expression (8x + 2) + (-9x + 7)
a. find the sum
b. explain how you know when to combine terms with variables

Answers

Answer 1
combine like terms, you would get -1+9 which your answer would be 8

Related Questions

HELP PLZ, 100 points!!!

Answers

Answer:Hey mate here is your answer...Step-by-step explanation:New value =5 + Percentage increase =5 + (5% × 5) =5 + 5% × 5 =(1 + 5%) × 5 =(100% + 5%) × 5 =105% × 5 =105 ÷ 100 × 5 =105 × 5 ÷ 100 =525 ÷ 100 =5.25

hope it helps you ❣️

Answer:

10.25%

Step-by-step explanation:

Let the original number be represented with x.

Increase by 5% = 5% of x = 5/100 x X = 0.05x

So, the next number = x + 0.05x = 1.05x

Increase again by 5% = 5% of 1.05x = 5/100

x1.05x = 0.05 x 1.05x = 0.0525

So, the current number = 1.05x + 0.0525x =1.1025x

[tex] \frac{1.1025x - x}{x} = 0.1025 \times 100 = 10.25\%[/tex]

5 2/6 - 2 3/6 in simplest form

Answers

Answer:

I believe 25/ 6 is the answer

Step-by-step explanation:

two numbered cubes are rolled then a spinner with 4 different colors on it spun twice then two coins are flipped how many total possible outcomes are their(show you working out)

Answers

Answer:  12 possible outcomes in total

Step-by-step explanation:

paul can finish painting a fence in 2 hours if jane douse the job alone she can finish it in 5 hours how long will it take them to finish the same job?

Answers

Answer: 40 minutes

Step-by-step explanation:

2/5 = .4 so it would be 40 minutes

change 5 feet 10 inches to centimetres

Answers

Answer:

177.8

Step-by-step explanation:

There are 30.48 centimeters per foot so multiply 30.48 by 5. And there is 2.54 centimeters in a inch so multiply 2.54 by 10. And then add the totals together to get 177.8

What is equivalent to 4,000 centimeters? A. 4 meters B.40 meters C.400 meters D. 40,000 meters

Answers

Answer:

B. 40 meters

Step-by-step explanation:

there are 100 cm in a meter

we can divide 4,000 by 100 to see how many meters are equivalent to 4,000 cm.

4,000/100 = 40

Therefore, the answer is B. 40 meters

hope this helps :)

A sporting goods store is discounting all
sports balls 55%. Which value is equivalent to this
percent?
A. 15/25
B. 11/20
C. 5/10
D. 5/55

Answers

The answer is B because 11/20 = 0.55
Answer: 11/20

Explanation:
11/20 = .55
.55 = 55%

Brainliest???

Determine the measures of the following; (SOMEONE PLS) :v

Answers

arc AC=27°

arc BD=33°

arc CB=120°

hope it helps you ❣❣

Mark me as brainliest

g Suppose a kind of disease exists within 1% of the population and a certain test can help diagnose it. If someone has the disease, the test will give a positive result with a 95% probability. On the other hand, if someone does not have the disease, the test result will give a negative result 97% of the time. If David did the test once, what is the probability that the test result is positive

Answers

Answer:

0.0392 = 3.92% probability that the test result is positive.

Step-by-step explanation:

Probability of a positive test:

95% of 1%(person has the disease)

100 - 97 = 3% of 100 - 1 = 99%(person does not have the disease).

What is the probability that the test result is positive?

[tex]p = 0.95*0.01 + 0.03*0.99 = 0.0392[/tex]

0.0392 = 3.92% probability that the test result is positive.

What is 30 % of 69.95

Answers

Answer:

20.985

Step-by-step explanation:

How do I calculate 30 percent off?

Take the pre-sale price.

Divide the original price by 100 and multiply it by 30.

Take this new number away from the original one.

The new number is your discounted value.

The tree diagram represents an
experiment consisting of two trials.
.3
.4
B

Answers

Answer:

.32

Step-by-step explanation:

.4x.8=.32

What classification of quadrilateral is show? Explain

Answers

it has 4 sides (i think)

Find the mean, median, and
mode of this data set:
2, 3, 4, 5, 5, 6, 8

Answers

Answer:

Mean: 4.71

Mode: 5

Median: 5

Step-by-step explanation:

Simplify.

Please help!!

Answers

Answer:

m√n+2n-n√m

Step-by-step explanation:

4√n^2+√m^2n-√4n^2-√mn^2

m√n+2n-n√m

pls help me i will give brainliest
Topic: Solving Word Problems Involving Linear Equations in One Variable

please show process.....
To do a job alone, it would take Beane 3 hours, Elle 4 hours and Rye 6 hours. How long would it take them to finish the job if they work together?​

Answers

Step-by-step explanation:

13 hours

6 + 4 + 3 = 13

correct if wrong

Hertz and Enterprise are rental car companies. Hertz charge's $50 for the rental, plus $40 for each day. Enterprise charges $40 for the rental, plus $45 for each day. What is the first day that Enterprise will be more expensive?

Answers

Answer:

I believe it will be day 3

Step-by-step explanation:

Day 1 for Hertz starts at 90, while day 1 for enterprise is starting at 85

day 2 (H)

130

day 2 (E)

130

day 3 (H)

170

day 3 (E)

175

PLEASE HELP ME, THIS MEANS EVERYTHING TO ME ITS APART OF MY FINALS.❗


The ages of students who play racquetball at a school are shown in the histogram below.



How many students play racquetball at the school?
A.
60
B.
51
C.
54
D.
57

Answers

Answer:

Uhhhh... 54?

Step-by-step explanation:

Just add them together.

NEED HELP MY GRADE DEPENDS ON ITT!!!!!!!! I will mark brainliest answer.

find the value of f and g in the figure below.

Answers

Answer:

DONT PRESS THAT LINK

Step-by-step explanation:

Which numbers belong to the solution set of the inequality? x+6= 42​

Answers

Answer:

36

Step-by-step explanation:

Answer:

x=36 is your answer

Step-by-step explanation:

Simplifying

x + 6 = 42

Reorder the terms:

6 + x = 42

Solving

6 + x = 42

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6' to each side of the equation.

6 + -6 + x = 42 + -6

Combine like terms: 6 + -6 = 0

0 + x = 42 + -6

x = 42 + -6

Combine like terms: 42 + -6 = 36

x = 36

Simplifying

x = 36

helppppppppppppppppppppppp

Answers

Answer:

E = N × C

for

E: earnings

N: number sold

C: cost

she will make:

50 × 1.25 = $62.5

Find the measure of an angle whose supplement measures two times its measure

Answers

Answer:

first angle = 60

second angle = 120

Step-by-step explanation:

Let the first angle  x

Let the second angle = 2x

x + 2x = 180        Supplementary angles = 180 degrees

3x = 180              Divide by 3

3x/3 = 180/3

x = 60

2x = 120

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A box in the shape of a rectangular prism has the dimensions shown. What is the length of the interior diagonal of the box? Round to the nearest tenth. Enter your answer in the box.


A rectangular prism 60 centimeters wide, 80 centimeters long, and 100 centimeters tall.

Answers

Answer:

Search for space diags

Step-by-step explanation:

you will find answer

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: 480000 CM ^3

Explanation:

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

this year you earned $75,500. Last year you earned $72,400. What was the rate of change on your earnings since last year
a. 4.28%
b. 4.68%
c. 4.92%
d. 5.12%​

Answers

5.12 I guess :)))))))

PLEASE I NEED HELP CLICK ON THIS IMAGE

Answers

Answer:

There is no mode (B)

Step-by-step explanation:

Can y’all help me on a question 15?!

Answers

i think it would be D

The perimeter of the base of a right square pyramid is 24 cm. The height of the pyramid is 6 cm.

What is the volume of the pyramid?


72 cm³

48 cm³

32 cm³

60 cm³

Answers

Answer:

72 cm³

Step-by-step explanation:

i just took the test :)

The volume of the given right square pyramid is 72 cm³. The correct answer would be an option (A).

What is the volume of a right square pyramid?

The formula for the volume of a right square pyramid is:

V = (1/3) B × h

where B is the area of the base and h is the height of the pyramid.

Since the perimeter of the base is 24 cm, and there are four equal sides, each side must be 24/4 = 6 cm.

The area of the square base is:

B = s² = 6² = 36 cm²

The volume of a right square pyramid is:

V = (1/3) B × h

Substituting in the given values, we get:

V = (1/3) × 36 × 6

V = 72 cm³

Therefore, the volume of the pyramid is 72 cm³.

Learn more about the volume of the pyramid here:

https://brainly.com/question/13268927

#SPJ3

How can 26n−7m+4(10n−6m) be rewritten?

Answers

Answer:

66n-17m

Step-by-step explanation:

..................

Answer:

66n - 31m

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Distributive Property

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

26n - 7m + 4(10n - 6m)

Step 2: Simplify

[Distributive Property] Distribute 4:                                                                 26n - 7m + 40n - 24mCombine like terms (n) [Addition]:                                                                   66n - 7m - 24mCombine like terms (m) [Subtraction]:                                                             66n - 31m

Questions in the attachments

Thank you to whoever answers :)

Answers

Answer:

A.

C.

D.

That should be the answer.

Hopefuly that helped.

Can someone help please

Answers

Answer:

Angle 2 = 34 degrees

Angle 4 = 34 degrees

Step-by-step explanation:

Angle 7 = Angle 1

180 - 146 = 34 degrees

so Angle 2 and 4 are 34 degrees, since they are congruent.

Hope this helped! Have a nice day! Plz mark as brainliest!!! :D

-XxDeathshotxX

find the area of the figure use 3.14 for pie

Answers

what figure? there’s nothing here
You forgot to upload the pic my friend
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