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]
3 years ago
10

Someone please help

Mathematics
1 answer:
Artyom0805 [142]3 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
What is the formula to a trapezoid
Molodets [167]
[(upper legth + lower length) x height] divided by 2
3 0
3 years ago
1. Name 4 technologies that have helped America develop into a powerful country.
irga5000 [103]
Telephone computers tv microwave
8 0
3 years ago
What is the integers from 25 to 41
DedPeter [7]
It is the sum of the integers from 1-41 minus the sum of the integers from 1-24 divided by 17 the sum of the integers from 1-41 is (42)(45)/2 = 861 the sum of the integers from 1-24 is (24)(25)/2 = 300 (861-300)/17 = 33 The answer is 33
5 0
3 years ago
Read 2 more answers
Please answer and put how
muminat
6 + m/4 = 3 (subtract 6 from both sides)
m/4 = -3 (multiply both sides by 4)
m = -12

Can plug in to original equation to check work:
6 - 12/4 = 3
6 - 3 = 3
3 = 3 

The answer m = -12 checks out
3 0
3 years ago
Read 2 more answers
Velida took out a 5/1 variable-rate mortgage for $150,000. The interest rate
Afina-wow [57]

Answer:

B

Step-by-step explanation:

The amortization period in months is:

30 years * 12 = 360 months

The monthly interest rate would be 5.25%/12 = 0.004375

The payment for monthly mortgage formula would be:

E=\frac{C*r}{1-(1+r)^{-n}}

Where

E is the monthly mortgage payment

C is the cost of mortgage, cost is $150,000

r is the monthly rate of interest, which is 0.004375

n is the period, in months, which is 360

Substituting, we get our answer:

E=\frac{C*r}{1-(1+r)^{-n}}\\E=\frac{150,000*0.004375}{1-(1+0.004375)^{-360}}\\E=\frac{656.25}{1-(1.004375)^{-360}}\\E=\frac{656.25}{0.7923}\\E=828.31

So, the correct answer is B

3 0
3 years ago
Other questions:
  • Mario earns a weekly salary of $440.00 plus a 12% commission on any sales. This week he sold $525.00 worth of merchandise. How m
    14·1 answer
  • 12 1/2 - (-4 1/2) =​
    13·1 answer
  • Which inequality represents this sentence?
    5·1 answer
  • Lacey decides to take her five year old son to the history museum. The price for the child's ticket is 2.75 dollars less than th
    8·1 answer
  • What is 1000x - 1x?<br><br> A) 101x<br> B) 1001x<br> C) 99x<br> D) 999x
    9·2 answers
  • Which statement is true about the given function?
    6·1 answer
  • green paint is made by mixing 5 pints of blue paint with 2 pints of yellow paint. how many pints of blue paint are needed to mak
    6·1 answer
  • I NEED HELP WITH THIS WORK SHEET
    15·1 answer
  • Which inequality is represented by this graph?
    7·1 answer
  • This is algebra 1 id appreciate it if you could help me thx!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!