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
lord [1]
3 years ago
10

Find the sum. 2x^2 +26x+ 156=0

Mathematics
2 answers:
kykrilka [37]3 years ago
6 0
It can not be found it is X e R
Mila [183]3 years ago
5 0

Answer:

-13

Step-by-step explanation:

2x²+26x+156=0

x²+13x+78=0

x²+13x=-78

x²+13x+169/4=-143/4

(x+13/2)²=-143/4

x+13/2=(i√143)/2 or x+13/2=-(i√143)/2

x=(i√143)/2-13/2 or x=-(i√143)/2-13/2

(i√143)/2-13/2+(-(i√143)/2)-13/2=(i√143-13-i√143-13)/2=-26/2=-13

You might be interested in
The wholesale price for a shirt is $5.50. A certain department store marks up the wholesale price by 40%. Find the price of the
Kazeer [188]

Answer:

$7.7

Step-by-step explanation:

Hello, I can help you with this

you can solve this by using a simple rule of three.

Step 1

define

if the wholesale price for a shirt is $5.50,it is 100 percent

$5.50⇔100%

the new price(x) is 40% more than the original, it means 140%

x  ⇔ 140%

the relation is

\frac{5.5}{100}= \frac{x}{140}\\

Step 2

solve for x(isolate x)

\frac{5.5}{100}= \frac{x}{140}\\x=\frac{5.5*140}{100}\\x=7.7

the price of the shirt in the department store is $7.7

Have a nice day.

7 0
3 years ago
Y = x + 5<br> 2x + y = 17
larisa [96]

Answer:

y = x + 5: x=y−5

2x + y = 17 : x=-1/2y+17/2

Step-by-step explanation:

I do not exactly know what you were asking but I just answered the questions, if that is not what you were looking for tell me so I can try and edit my answer

8 0
3 years ago
Which equation is the result of subtracting the second equation from the first?
rewona [7]

Answer:

the answer is

-x-8y=8

or, x + 8y= -8

Step-by-step explanation:

4x - 6y = 13 - (5x + 2y = 5)

or, 4x - 6y = 13

- 5x - 2y = -5

-------------------------

- x - 8y = 8

5 0
3 years ago
What is the slope of a line that is perpendicular to the graph of<br> y= 5x + 5?
AVprozaik [17]
-5/1 is the slope so the answer is -5 because you pick 2 points and use point slope formula or
y1-y2/x1-x2
3 0
3 years ago
Alisha asked 120 students what kind of pet they like the most. Exactly 45% of the students said they liked dogs best. What was t
qwelly [4]
The answer would be 54 students liked dogs the best.
6 0
3 years ago
Other questions:
  • Find the area of the rhombus
    11·2 answers
  • Which statement describes the behavior of the function f (x) = 2 x Over 1 minus x squared
    7·1 answer
  • Solve using double substitution<br><br> y=x-7<br> y=-2x+8
    13·1 answer
  • Pls show me proof, thank you
    10·1 answer
  • Find the surface area of the composite solid.
    7·1 answer
  • Which set is not closed under addition
    15·1 answer
  • Explain to me in words how you would find the slope of this line and then tell me the answer and how u got it
    14·1 answer
  • James used 42% of the money on a gift card to purchase groceries. If he spent $67.20 on groceries, how much was on the gift card
    9·1 answer
  • Find the slope of the line that passes through (3,1) (4,9)
    14·2 answers
  • What percent of the
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!