Mathematics Middle School

Why does the sum of the two given angles equal 180°? (2x+1)+(x-7)=180

Answers

Answer 1

Answer:

because its a straight line

Step-by-step explanation:

Answer 2

Answer:

Since the sum of the angles is 180 degrees and each angle is represented by the respective algebraic expressions, then to find the value of x, just add the expressions up, set that sum equal to 180, and solve for x. So, (2x-7)+(x+25)+(3x+12)=180 is our equation. Now we just simplify and solve for x.

(2x-7)+(x+25)+(3x+12)=180

6x+30=180 b/c 2x+x+3x=6x and -7+25+12=30.

6x=150 subtract 30 from both sides of the equation

x=25.

Step-by-step explanation:

Hope this helps!

Related Questions

Giving brainliest!!!!!!!
Civics I meant

Answers

b. it just makes the most sense to me, i passes my civics eoc with a 5
Your answer is B. The other ones are not real rights. Have a good one!!

kyle is 4 times older than liam. in six years kyle will be 2 times older than liam. how old are they now?
PLS HELP ASAP!!!!!

Answers

Answer:

48

Step-by-step explanation:

4 x 6 = 24

24 x 2 = 48

hopefully i got this correct! enjoy !!

The answer is going to be 48

I'LL GIVE BRAINLIEST

Answers

Answer:

i think a triangle

Step-by-step explanation:

7-2(x-5)
............................

Answers

Hey there!

7 – 2(x – 5)

DISTRIBUTE

–2(x) + (–2)(–5)

–2x + 10

7 – 2x + 10

COMBINE your LIKE TERMS

7 + 10 = 17

–2x = –2x

Answer: –2x + 17 ☑️

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

-2x+17 thas the answer I think

The area of a triangular prism is 18inches squared. We know the height is 9.5in. What is base a, b, and c?

Answers

Answer: step by step calculation, formula & solved example

problem to find the area for the given values of base b, & height h of triangle in

inches (in), feet ... Learn how we & our partners collect & use data. ... (1/2) x Base

x Height substitute the values = (1/2) x 18 x 12 = 108 cm2. The area of a triangle

I'LL GIVE BRAINLIEST: Which measurements could create more than one triangle?
A. A triangle with sides measuring 5 inches, 7 inches, and 9 inches,

B. A triangle with sides measuring 8 cm and 12 cm and an included angle measuring 85°.

C. A triangle with sides measuring 50mm and 35mm and a non-included angle measuring 25°.

D. A triangle with sides measuring 5cm, 10cm, and 15 cm.

Answers

C, It needs 50mm and 35mm.

Answer:

ya its c

only one that makes sense

Step-by-step explanation:

Help please! I have no idea how to solve this! Due by 8:00 pm

Answers

Answer:

no solution

Step-by-step explanation:

What do we help with ??

Help please, due very soon

Answers

its blurry cant see anything reallly

Answer:

I’ve done this before so the answer is

Step-by-step explanation:

Kyle is 4 times older than liam. in six years kyle will be 2 times older than liam. how old are they now?
PLS HELP ASAP!!!!!

Answers

9 and 18
They were 3 and 12 six years ago because 12/3= 4 and 3+6=9 and 12+6=18 and 18/9=2
9 and 18 they were 3 and 12 last year

Lamont purchased a sweater that was on sale for 25% off.
Which expression represents the amount that Lamont paid for the sweater if x represents the original price of the sweater?

Answers

y= x*0.025
hope this helps!!
The correct answer would be y=0.75x because 0.25x is how much money she saved while 0.75x is how much she still had to pay for the sweater

Help please, my brains is empty :o(

Answers

Answer:

I think 5 and 5 are equal so the angles are equal which are 70,70

Step-by-step explanation:

70+70+x=180

140+x=180

x=40

GIVING CORRECT ANSWER BRAINLYEST!!
A pre-image has coordinates B(8, 4), U(6, 10) and N(5,-2). The image has coordinates B'(2, 1), U'(1.5, 2.5) and N’(1.25, -0.5). Write the transformation rule used to create this image.

Answers

Answer:

I need an image to solve this

I need an image to help you man sorry

A clothing store pays $15 for a shirt. The percent of markup is 85%. Find the selling price.


A.
$27.00


B.
$16.28


C.
$15.85


D.
$27.75

Answers

B
is the answer, hoped that helped my friend

On a recent math quiz, Georgia got 35 out of 40 questions correct. Rounded to the nearest percent, what was Georgia's score on this quiz?

Answers

Answer:

80%

Step-by-step explanation:

Answer

(87.5) rounded would be 88

Step-by-step explanation:

35/40 divid eatch side by 2 to get 17.5/20 now the fraction can go into 100 eveanly. 20x5=100 and 17.5x5=87.5. 87.5/100

PLS HELP ASAP THESE ARE ALL MY POINTS!!!!

parallelogram has an area of 1 1/8 yd². Use the formula A = bh to find the length of the base, b.

A. 3/2

B.2/3

C. 27/32

D. 32/27

Lola needs 3/4 cup of oats to make one batch of muffins. How many batches can she make with 1 1/2 cups of oats?

A. 1/2

B. 2

C. 8/9

D. 9/8

Answers

Answer:

A    (for the oats and muffin one)

Step-by-step explanation:

no.

I need some help on this question please!!!! Will give 10 brainlist if you are right​

Answers

3/2 is the slope of the question

Answer:

1 1/2 OR 3/2 OR 1.5

Step-by-step explanation:

Find two points on the graph, I did 2,1 and 4,4

Subtract each Y and each X . Rise (y) Run(x)

4-1=3

4-2=2

Do Rise

----------

Run

(Rise over run)

Getting 3/2

lmk if it doesn't make sense

um i need help

Name 2 types of percents that you have to add the part.

Answers

Answer:

for example The ending number --> 50% of 2 is what?

Step-by-step explanation:

and The starting number -->  50% of what is 1

Answer:

40% of 1

Step-by-step explanation:

91^-1/12 in surd form

Answers

Answer:

what do you mean by surd?

Step-by-step explanation:

i can probably help you

Answer:

1/1092

Step-by-step explanation:

Reduce the expression by cancelling out the common factors. The exact form is 1/1092 and the decimal form is 0.00091575.

Cara went out to eat at a restaurant and used a 30% off coupon. She paid $42 instead of the original price. What was the original price of her meal?

Answers

Answer:

bloop is the bloopiest of the bloopiest of the bloopiest bloopity bloop

Step-by-step explanation:

The original price was 64 or 65.

A roller coaster starts by ascending 15 feet for every 75 feet it moves forward. The
coaster starts at a point 30 feet above the ground. Write the equation of the line that
the roller coaster travels along in point-slope form, and use it to determine the height of
the coaster after traveling 500 feet forward. Assume that the roller coaster travels in a
straight line for the first 500 feet.
I

Answers

Answer:

B

Step-by-step explanation:

Please answer in square units and no fake answers

Answers

Answer:

x=4 I dont know if you are trying to find the value is x

Step-by-step explanation:

Lin lines the bottom of her first pan with aluminum foil. The area of the rectangular piece of foil is 7 ¼ square inches. Its length is 3 ½ inches. What is the width of the foil?

Answers

Answer:

Approximately 2.07 square inches

Step-by-step explanation:

Area of a rectangle: Length × width

Area: 7.25 square inches

Length: 3.5 square inches

Width = 7.25 ÷ 3.5

          ≈2.07

You should approximate it however you like. I just approximated it to 2.07

3.75 maybe
Hope this helps sorry if I’m wrong

The scale of a drawing is 3 cm : 15 m. What is its scale factor?

Answers

Answer:

1cm=5m or 3:1500

Step-by-step explanation:

5 cuz 15 divided by 3 is 5

I need help with this preferably the answer.

Answers

Answer:

s= students

Step-by-step explanation:

1. 22 + 4/9s

2. 35 - 5/9s

3. 28 + 4/9s

Match the equation to the graph where n is the Number of Burgers and C is the cost.
The 2 equations are C= 0.35n and C= 0.5n.

Answers

Answer:

How did life during the Industrial Revolution differ in the North and the South?  

In what ways did the Industrial Revolution make life better?

How did it make life more difficult? How did life during the Industrial Revolution differ in the North and the South?  

In what ways did the Industrial Revolution make life better?

How did it make life more difficult?

Step-by-step explanation:

i tnink igz the haowp?

Can someone help me out? (serious answers only)

Answers

The answer is D -60.

Answer:

40

Step-by-step explanation:

Good Luck

For which polygon is the sum of the interior angles equal to 720?
quadrilateral
pentagon
hexagon
septagon

Answers

Answer: Hexagon

Explanation: Just trust me ;)
Hexagon is the answer

The multiplication table below can be used to find equivalent ratios.

Which ratio is equivalent to StartFraction 8 Over 6 EndFraction?
StartFraction 3 Over 24 EndFraction
StartFraction 24 Over 32 EndFraction
StartFraction 32 Over 24 EndFraction
StartFraction 24 Over 3 EndFraction

Answers

Answer:

c

Step-by-step explanation:

3/24 = 3/3*8 = 1/8

24/32 = 4*6/4*8 = 6/8

32/24 = 4*8/4*6 = 8/6

24/3 = 3*8/3 = 8/1 = 8

Answer:

c

Step-by-step explanation:

I WILL GIVE YOU BRAINLIEST IF YOU HELP ME WITH THIS MATH WORKSHEET (1/2)

Answers

Answer:

Step-by-step explanation:

1) corresponding angles

2)alternate interior angles

3)alternate interior angles

4)corresponding angles

2x-7=123

2x=130

x=65

5)corresponding angles

6x-11=5x

6) alternate interiot

40=14-2x

26=-2x

-13=x

Yes^that answer is correct ^

i need help with this asapppp

Answers

Answer:

540

Step-by-step explanation:

Answer:

It is 563.

Step-by-step explanation:

7 + 7 = 14 and 20 + 20 = 40. 40 x 14 = 560 but 14.075 x 40 = 563. So therefore it is 563

Other Questions
I need help with solving these math problems please!!! Select all the correct statements concerning proteinspls help im taking a test. Which of the following were roots of the Enlightenment? Select two Question # 1 Multiple Choice Another name for a lawyer is chief. O False O True Jane moved from a house with 66 square feet of closet space to an apartment with 37.62 square feet of closet space. What is the percentage decrease of Jane's closet space? ok ignore the thing that says do it the way i sowed you in class There are 90 total days in winter. If it snowed 30% of the days, on how many days did it snow?Please add an explanation I will mark you as Branliest, please help Iron has a specific heat of o.45 J/g C. Removing -1.16 E 2 J of energy lowered the temperature of iron from 89 C to 26.41 C. What was the mass of the iron? If the current is 10 amps and the voltage source is 200 volts,what is the resistance? 18 flowers in 6 vases = flowers per vase PLEASE ANSWER PLEASEE!!!!!!! At a local fitness center, members pay a $10 membership fee and $4 for each aerobics class. Nonmembers pay $6 for each aerobics class. For what number of aerobics classes will the cost for members and nonmembers be the same? Why was Uganda named the pearl of Africa ? PLZZZZ HELP IT'S FOR MIDDLE SCHOOOOOLLLLLTylers brother works in a shoe store. Tylers brother earns a commission. He makes 2.5% of the amount he sells. Last week, he sold $900 worth of shoes. How much was his commission? What codes for proteins? A) polypeptides B) amino acids C) DNA D) RNA Is the answer to -8/-8 positive or negative? If XYZ invested $5,800 today in an account that is expected to earn 3.2 percent per year, and she expects to make another investment in the same account in 3 years from today, then how much money does XYZ expect to invest in 3 years if she expects to have $15,000 in her account in 4 years from today Which step is irrelevant to investigating a foodborne illness outbreak 1. If the price of the share grows as the company grows, how does buying 25 pointsshares in a company benefit an investor?a. An investor will be able to sell these shares for a lower price and make a profit.b. An investor will be able to sell these shares for a higher price and make a profit.c. An investor will be able to enjoy free services from the company they bought sharesfrom.d. An investor will be able to put the company on their resume. Rita sells beaded necklaces. Each large necklace sells for 5.30 and each small necklace sells for 4.80. How much will she earn from selling 7 large necklaces and 1 small necklace?