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
Sophie [7]
2 years ago
5

Can you solvefor x 3 (x+4)+5x=-20

Mathematics
1 answer:
inn [45]2 years ago
3 0
Solve for x:5 x + 3 (x + 4) = -20
3 (x + 4) = 3 x + 12:3 x + 12 + 5 x = -20
Grouping like terms, 5 x + 3 x + 12 = (5 x + 3 x) + 12:(5 x + 3 x) + 12 = -20
5 x + 3 x = 8 x:8 x + 12 = -20
Subtract 12 from both sides:8 x + (12 - 12) = -12 - 20
12 - 12 = 0:8 x = -20 - 12
-20 - 12 = -32:8 x = -32
Divide both sides of 8 x = -32 by 8:(8 x)/8 = (-32)/8
8/8 = 1:x = (-32)/8
The gcd of -32 and 8 is 8, so (-32)/8 = (8 (-4))/(8×1) = 8/8×-4 = -4:Answer: x = -4
You might be interested in
Explain how I would get -7 from dividing -45 from 7 Full explanation gets brainly
lana66690 [7]
If you divide a negative by a positive then you get a negative or if you divide a positive by a negative then you make that number negative
3 0
3 years ago
GEOMETRY PLZZZZZ HELPPPPP
USPshnik [31]

Answer:

(x,y) becomes (-y,x) so (3,2) would become (-2,3)

3 0
2 years ago
(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x
Aliun [14]
As

\tan x=\dfrac{\sin x}{\cos x}
\cot x=\dfrac{\cos x}{\sin x}

we have

\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x

Recalling that \cos2x=\cos^2x-\sin^2x, we end up with

-\cos2x=1-2\cos2x
1=\cos2x
\implies2x=2n\pi

(where n is any integer)

\implies x=n\pi
5 0
3 years ago
PLSS HELP I NEED REALL HELP PLSSS I WILL REPOST IF YOUR A BOT The set of all values that a function will return as
Liono4ka [1.6K]

the set of all values that a function will return as outputs

8 0
2 years ago
Original: $75 new: $60
nadezda [96]

What's the question?

If it's "What's the difference?" or something like that, then the answer is 15. :)

4 0
2 years ago
Read 2 more answers
Other questions:
  • Answer any of the following:
    8·1 answer
  • During the past year in the maternity ward of a hospital in a large city, 1,254 males were born and 1,462 females. If we can ass
    15·1 answer
  • The radius of a sphere is multiplied by 1/7 . What effect does this have on the volume of the sphere?
    15·2 answers
  • How do I find the range of a function (no links)
    14·1 answer
  • Assume f(x) = ax^2+ bx + c Which one is true? f is a parabola that opens sideways to the right. f is a parabola that opens sidew
    7·1 answer
  • PLEASE SOMEONE PLEASE HELP ME
    14·1 answer
  • Find the slope and Y-intercept, then graph<br> X - 3y = 9
    10·1 answer
  • The length of a garden is 25 m. Find the width knowing that the area is between 300 m2 I need it now pls
    15·1 answer
  • I need help please! In each case below, list the lettered measures for angles or sides in descending order (FROM GREATEST TO LEA
    5·1 answer
  • A necklace usually sells for 18, but is onsale for 15% off. What is the sale price of the necklace?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!