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
Komok [63]
2 years ago
11

Help please! I just need to know how to do this step by step...

Mathematics
2 answers:
Alex787 [66]2 years ago
7 0

-8 - 5n = 64 + 3n

    +5n          +5n           add 5n to both sides, 5n's cancel out on the left.

______________

-8 = 64 + 8n

-64 -64                          subtract 64 on both sides, 64's cancel out on the right.

______________

-72 = 8n

___  ___                       divide 8 on both sides, 8's cancel out from the right.

 8      8

n= -9, final answer

pashok25 [27]2 years ago
3 0

Answer:

-8 - 5n= 64 + 3n

+8 +8

=0 =72

-5n= 72 + 3n

-3n -3n

-8n= 72 divide both sides by -8

n= -9

You might be interested in
What is the area of the given circle in terms of pi? Diameter 6.6. Please Help
Hatshy [7]
I believe the answer is 10.362
hope this helps

7 0
3 years ago
Read 2 more answers
What is the solution to this systems of equation? 2x-3y=9 and 5x+3y=10​
mamaluj [8]

y = -5x/3 + 10/3

y = 2x/3 - 3

8 0
3 years ago
Given that y= 7 cm and θ= 49 °, work out x rounded to 1 DP.<br><br> (not drawn to scale.)
Anastaziya [24]

The value of x in the diagram is 6.1 cm.

<h3>What is right-angle triangle?</h3>

A right-angle triangle is a triangle that has 90° as one of the angles in the triangle.

To calculate the value of x in the right-angled triangle above, we use the formula below

Formula:

  • tanθ = y/x............ Equation 1

Make x the subject of equation 2

  • x = y/tanθ............. Equation 2

From the question,

Given:

  • θ = 49°
  • y = 7 cm

Substitute these values into equation 2

  • x = 7/tan49°
  • x = 7/1.15
  • x = 6.1 cm

Hence, the value of x in the diagram is 6.1 cm.

Learn more about right-angled triangle here: brainly.com/question/64787

#SPJ1

8 0
2 years ago
Maritza remembers her PIN because it is the product of two consecutive prime numbers that is between 1000 and 1500. What is her
Elis [28]
30 x 30 = 900  too low
40 x 40 =1600   too high - so the answer lies somewhere between

30 x 31 (too low)  39 x 40 = too high

31 and 37 are the only primes between those numbers and that is her pin 3137

3 0
3 years ago
Read 2 more answers
What is the slope that passes through the pair of points? (-1, 4), (3, 12)
Alex73 [517]
Use the formula (since I can’t put special characters) y sub 2 minus y sub 1 divided by x sub 2 minus x sub 1 and plug the coordinates into this equation
8 0
3 years ago
Read 2 more answers
Other questions:
  • Nathan drove 275.2 miles on 8 gallons of gas. Divide 275.2 by 8 to find the average number of miles per gallon for Nathan's car.
    8·2 answers
  • Find the points of intersection (if any) of the graphs of the equations. Use a graphing utility to check your results. y = - x +
    12·1 answer
  • Hector originally had $60 in his bank account after buying some books Hector now has 3/10 of the original how much does Hector n
    9·2 answers
  • HELLLPPPPPPPP PLEASEEE use the image
    6·2 answers
  • Tell whether the given value is a solution of the inequality. 5x-17&gt;62;x=13
    5·1 answer
  • 2(4+2x)≥5x+5 solve inequality
    8·2 answers
  • Solve:<br> p−316=−212<br> What Is P?
    12·1 answer
  • What are integers?<br> Please give your best explanation and a simple example (worth 20 points)
    11·2 answers
  • Please help me with this
    6·1 answer
  • Is 12 a solution to the equation × - 8 = 20? Explain how you know.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!