1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valentina_108 [34]
4 years ago
15

Help please! really appreciate it

Mathematics
1 answer:
arlik [135]4 years ago
4 0

Answer:

x=26

Step-by-step explanation:

exterior angles theorem meaning they're equal to each other.

5x+7=8x-71

add 71 to 7

5x+78=8x

subtract 5x from 8x

78=3x

divide 78 and 3

x=26

to check your work plug 26 into each equation:

5(26)+7= 137°

8(26)-71= 137°

because they're the same you know that x must equal 26

hope this helps!❤

You might be interested in
Puppy
Marat540 [252]
10.5+(10.5*.4)=10.5+(4.2)=14.7lbs after the first month
5 0
3 years ago
Read 2 more answers
Replace the * with a monomial so that the trinomial may be represented by a square of a binomial:
pogonyaev

Answer:

Below in bold.

Step-by-step explanation:

The identity is of the form

(a + b)^2 = a^2 + 2ab + b^2.

a) Sqrt 49 = 7 and we need + 28 as the middle coefficient . We get this with

2*7 + 2*7 so the first coefficient is 2*2 = 4.

So * = 4a^2.

(2a + 7)^2 = (2a + 7)(2a + 7) = 4x^2 + 14a + 14a + 49.

b) -6 * -6 = 36   -24 =  2*-6 + 2 *-6 so the last term is 4x^2

c) The middle term  must be an 'ab' term.

sqrt 6.25 = 2.5 and sqrt 1/4 = 1/2

So the coefficient of the middle term is 2.5 * 1/2 + 2.5 * 1/2

= 2.5

So the middle term is 2.5ab.

d) The first term will be in b^2.

100 = 10* 10 and we need 2 as a middle term so coefficient of the first term

will be  1/100 or 0.01.  as the 2 comes from 0.1 * 10 + 0.01 * 10 and (0.1)^2 = 0.01

So it is 0.01b^2.

8 0
3 years ago
WILL MARK BRAINLEST, NEED THE ANSWER ASAP!!!!
PIT_PIT [208]
A. I’m so sorry I cant tell you how to do this part, get a formula chart from the Internet and just plug in the answers.
B. The slope of the ladder is also how it is slanted, if I’m reading it correctly, it’s there slanted part.
C. Much harder omgosh, imagine leaning a ladder up against a strait wall, and then pitting your weight I=on it backwards, here’s a hint you would fall flat on your back.
4 0
3 years ago
Pls I need help ASAP pls
nasty-shy [4]
The correct answer is D
6 0
3 years ago
A bag conatins 120 marbles some are red and the rest are black there are 19 red marbles for everys black marble.How many red mar
Anarel [89]
The answer would be 101
7 0
3 years ago
Other questions:
  • Can anyone this asap??
    14·1 answer
  • Mark, Carrie, Max, and Jane are doing a probability experiment in math class. They flip a coin 200 times and record their result
    13·1 answer
  • Write a decimal where the value of a digit is 1/10 as much as a digit in another place
    10·1 answer
  • Plz explain why plz and thx asap
    7·1 answer
  • Determine whether the sampling method described below appears to be sound or is flawed. In a survey of 540 ​subjects, each was a
    11·1 answer
  • Vector performed an experiment at a local farm to determine if the addition of bananas to his biomass cow manure recipes helps p
    7·2 answers
  • A person's score on a Mad Minute is proportional to the amount of questions he or she answers correctly. Each Mad Minute lasts t
    13·1 answer
  • Please show your work! I have 3 more of these, and I want to be able to do them by myself.
    6·1 answer
  • Help please. giving brainliest.
    8·1 answer
  • High school students across the nation compete in a financial capability challenge each year by taking a National Financial Capa
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!