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
Amiraneli [1.4K]
3 years ago
14

Place the following steps in order to complete the square and solve the quadratic equation,x^2+7=0

Mathematics
1 answer:
forsale [732]3 years ago
6 0
X^2+7=0
this can be written as:
x^2+0x+7=0
To solve using completer square we proceed as follows:
x^2+0x=-7
but
c=(b/2a)^2
c=(0/2*1)^2=0
hence
x^2+0x+0=-7+0
this will be simplified as:
x^2=-7
getting the square root of both sides gives us:
sqrt(x^2)=sqrt(-7)
x=+/-√-7
but √-1=i
hence our answer will be:
x=+/-7i
You might be interested in
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
A shirt has an original price of $19.75. If the shirt is marked 25% off and there is a 7.75% tax, how
Bumek [7]

Answer: 4.90 im not 100 percent sure

Step-by-step explanation:

To find the actual discount, multiply the discount rate by the original amount 'x'. To find the sale price, subtract the actual discount from the original amount 'x' and equate this to given sale price.

4 0
3 years ago
Read 2 more answers
Pls help meh pls<br> Find the area of the figure. (Sides meet at right angles.)
Vlad [161]
We find the area of the total square which is 8in • 8in=64in^2 . Now we find the area of the small quadrilateral which is 4in•4in=16 in^2.
Now we subtract the area of the small quadrilateral from the big quadrilateral’s area 64in^2 -16in^2 leaving us with the are of 48in^2 of the figure
3 0
3 years ago
Determine which lines in the diagram are parallel. A) a || b B) b || c C) a || c D) b || d
spayn [35]

Line a and line c are parallel lines that are given as a || c. Then the correct option is C.

<h3>How are parallel straight lines related?</h3>

Parallel lines have the same slope since the slope is like a measure of steepness and since parallel lines are of the same steepness, thus, are of the same slope.

Since the given parallel line has equation y = 2x + 2, thus its slope is 2 and thus, the slope of the needed line is 2 too.

Then we have

The distance between line a and line c is constant. Then line a and line c are parallel lines.

Line a || line c. Then the correct option is C.

Learn more about parallel lines here:

brainly.com/question/13857011

#SPJ1

7 0
2 years ago
Tori examined the pattern of exponents in the table.
vichka [17]

Answer:

The answer is actually B, C, and E

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • The positions of two divers from the water's surface after a dive are shown:
    8·1 answer
  • What adds to 10 and multiplies to 11
    8·1 answer
  • A rectange has a width of 9 units and a length of 40 unit. what is the length in diagonal
    7·1 answer
  • Where do you use percents in everyday life?​
    6·1 answer
  • The lengths of two sides of a right triangle are given. Find the length of the third side. Round to the nearest tenth if necessa
    7·2 answers
  • 100 points and brainlyest which high school should i consider? l live in long beach California and the closest high school is Wi
    5·2 answers
  • What are the coordinates of the point on the directed line segment from (-5, -1) to
    13·2 answers
  • Solving y=5/2x-1 and y=-1/2x+5 on a graph
    13·1 answer
  • An exclusive clothing boutique triples the price of the items it purchases for resale.
    6·1 answer
  • Help me please I need a good grade
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!