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
MakcuM [25]
3 years ago
6

Find the value of the variable

Mathematics
1 answer:
marissa [1.9K]3 years ago
8 0

Answer:

x=13

Step-by-step explanation:

because they're alternate adjacent angles:

5x=78-x

6x=78

x=13

You might be interested in
Each week, you drive 150 miles. Your car gets 25 miles to the gallon, and gas prices are $3 per gallon. How much gas money will
blondinia [14]
150 divided by 25 equals 6. 6 times 3 equals 18. This means that you will spend $18 on gas each week. 
6 0
3 years ago
Read 2 more answers
Please I need help with this question and also the working
pychu [463]
Okay. This is my answer

8 0
2 years ago
LOTS OF POINTS FOR HELLLP
lara31 [8.8K]

Answer:

y = 3x+9

Step-by-step explanation:

We can use the slope intercept form

y = mx+b

where m is the slope and b is the y intercept

y = 3x +b

Substitute the point into the equation

6 = 3(-1) +b

6 = -3+b

Add 3 to each side

6+3 = -3+3+b

9 = b

y = 3x+9

5 0
3 years ago
Read 2 more answers
2. Eric had $197 in his savings account before he was paid his weekly salary. His current
Nezavi [6.7K]

Answer:

197+n = 429

Step-by-step explanation:

He starts with 197,  he adds his salary, he ends with 429

197+n = 429

5 0
3 years ago
Read 2 more answers
Find the length of a rectangle with a diagonal of 10 and a height of 8.
Dmitry_Shevchenko [17]

Answer:

The length of the rectangle is 6.

Step-by-step explanation:

Given: The diagonal of a rectangle is 10 and the height is 8.

Please understand, that a diagonal, divides the rectangle into two tringles.

To find the length of the rectangle, you can use Pythagoras on one of the right sided triangles, because the length of the triangle, is also the length of the rectangle!

<em>EXTRA:</em>

<em>If</em><em> you know the special 3 4 5 triangle, a so called Pythagorean Triple, then you can "see" the simularity between the numbers.</em>

<em>Instead of 5, a diagonal of 10 is given (factor of 2 bigger).</em>

<em>Instead of 4, the height of 8 is given (factor of 2 bigger</em><em>)</em><em>.</em><em> </em><em>By scaling the Pythagorean Triple 3 4 5 by a factor of 2, you get the numbers 6 8 10. Could it be, that the number we need to find, is six?</em>

Try to verify, by calculating the missing number (which is the length of the rectangle we are looking for).

a² + b² = c²

a = length (and is unknown)

b = height = 8

c = hypothenusa/diagonal = 10

Substitute the numbers given:

a² + 8² = 10²

Subtract 8² left and right of the = sign.

a² +8² -8² = 10² - 8²

a² + 0 = 100 - 64

a² = 36

a = + - √36

a = + - 6

<em>EXTRA</em><em>:</em>

<em>You</em><em> can ignore the -√36 = -6 part of the solution, because a length of -6 has no meaning here.</em>

a = 6

So, the length of the triangle is 6 and thus, the length of the rectangle is also 6.

8 0
3 years ago
Other questions:
  • Solve using gaussian elimination and show ur work
    12·1 answer
  • WILL MARK BRAINIEST!!! Charlotte wants to make a mailbox like the one shown. What is the volume of the mailbox? Round to the nea
    15·2 answers
  • A shopper pushes a cart 50 m south down one aisle and then turns 90.0° west and moves 23 m. He then makes another 90.0° turn and
    9·1 answer
  • Li had 5 2/3 gallons of juice. He served 2 3/4 gallons at breakfast. How many gallons does Li have left? Enter your answer in th
    13·1 answer
  • based on a survey of 32 randomly selected employees (anonymously, of course) the company has determined that the average amount
    9·1 answer
  • Find the value of |-4 + 3| · 8.
    7·2 answers
  • a metal pile is 500cm long correct to the nearest centimeter the pole is cut into rods each of length 5.8cm correct to the neare
    8·1 answer
  • 4.6x-9.3=27.5 NEED HELP asap
    7·2 answers
  • How to find the volume of an oven with the inside dimensions 3 ft by 1.5 ft by 3 ft
    10·2 answers
  • Simplify the following expression to remove negative exponents.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!