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
Deffense [45]
2 years ago
10

Someone please help

Mathematics
1 answer:
Artyom0805 [142]2 years ago
7 0

Answer:

x = -3.73 or -0.27

Step-by-step explanation:

From the question,

x²+ 4x+1 = 0

This is a quadratic equation, and it can be solved using any of the 3 methods.

Using completing the square method,

x²+4x = -1

Add half the coeffiecient of x, square it and add it to both side of the equation.

The coefficient of x is 4,

half the cofficient is 2

Add 2² to both side of the equation

x²+4x+2² = -1+2²

(x+2)² = 3

x+2 = ±√3

x+2 = ±1.73

Either,

x+2 = -1.73

x = -1.73-2

x = -3.73

or

x+2 = +1.73

x = =1.73-2

x = -0.27

You might be interested in
D = rt what does r stand for
AnnyKZ [126]
In the equation D = rt, the r stands for rate. The equation is saying that distance equals the rate at which you traveled multiplied with the time you traveled. In other words, r is the speed traveled. Example: If the rate at which you travel is 35 miles per hour and you traveled for 2 hours, then you have traveled 35 miles times 2 or 70 miles.
3 0
3 years ago
What is the independent variable in this function?
DedPeter [7]

Answer:

p

Step-by-step explanation:

The value of h depends on the values of p.

So h is the dependent variable and p is the independent one

5 0
1 year ago
Solve the proportion for x.
Delvig [45]

\frac{x}{8}  =  \frac{8}{64}  \\ 64x = 8 \times 8 \\ 64x = 64 \\ x =  \frac{64}{64}  \\  \boxed{x = 1}

  • Proportion for x is <u>1</u><u>.</u>
  • Use <u>cross </u><u>multiplication</u><u>.</u>

5 0
2 years ago
(x^4+15x^3-77x^2+13x-36)+(x-4)
Olenka [21]
Answer:<span> =<span><span><span><span><span>x4</span>+<span>15<span>x3</span></span></span>−<span>77<span>x2</span></span></span>+<span>14x</span></span>−<span>40</span></span></span>
7 0
3 years ago
Read 2 more answers
-4(10-a)=36 what the steps
SpyIntel [72]

Hey there!☺

Answer:\boxed{a=19}

Explanation:

-4(10-a)=36 Equation

−4(10 − a) = 36  Simplify both sides

(−4)(10) + (−4)(−a) = 36 Distribute

−40 + 4a = 36

4a − 40 = 36

4a - 40 + 40 = 36 + 40 Add 40 to both sides

4a = 76

4a/4 = 76/4 Divide both sides by 4

76/4 = 19 Simplify 76/4

a = 19

Hope this helps!

8 0
3 years ago
Other questions:
  • Sara went to lunch with her friends .the sandwhich she bought cost 4.95 if the tax rate was 7.5% what is the total cost
    11·1 answer
  • [ Please help ] The graph of a function f(x) is shown below.
    11·1 answer
  • Sqrt(3x)-1=-4<br><br> 1.)x=3<br><br> 2.)x=-3<br><br> 3.) no solution<br><br> 4.)x= 25/3
    7·1 answer
  • What is 5.6 minus 4.8
    15·1 answer
  • How do I calculate these division facts and what’s the answer 63 ÷ 7 56 ÷ 7
    9·2 answers
  • Due in 1 hour. thank you!!
    5·2 answers
  • I needs help on algibra
    7·2 answers
  • What is the square root of 39 divided by 5 multiplied by 10?
    7·1 answer
  • Please help me quick!
    7·1 answer
  • Please correct if it's not right what I did and also what's for b)?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!