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
Valentin [98]
3 years ago
11

Solve x2 + 6x = 7 by completing the square. Which is the solution set of the equation?

Mathematics
1 answer:
Pavel [41]3 years ago
3 0
X^2 + 6x = 7
Divide 6 by 2 and square the result and add to both sides of the equation.
6/2 = 3   3^2 = 9    x^2 + 6x + 9 = 7 + 9
x^2 + 6x + 9 = 16
(x+3)^2 = 16
x+3 = +- Sqrt 16) = +-4
x = -3+4 = 1
x = -3-4 = -7
You might be interested in
What is cos^2x (sec^2x - 1)
otez555 [7]

Answer:

cos²x.sec²x =1 (formula)

cos and sec are reciprocal to each other

cos²x=1/sec²x

now from the eq above,open the brackets and multiply

1-cos²2x

sin²2x

7 0
3 years ago
Can someone help me please an thank you
Gala2k [10]
A.c because it’s right
6 0
3 years ago
Which expression represents the phrase “twice the quotient of 50 and a sum of a number y and 8
Alborosie

Answer:

2 * 50/(y + 8)

Step-by-step explanation:

"twice the quotient of 50 and a sum of a number y and 8"

y + 8

"twice the quotient of 50 and a sum of a number y and 8"

50/(y + 8)

"twice the quotient of 50 and a sum of a number y and 8"

2 * 50/(y + 8)

5 0
4 years ago
Read 2 more answers
Which property is used in this statement? if k/2=5, then k=10
Otrada [13]
Property of equality
k=k
10/2=5
5=5
3 0
4 years ago
The lateral area of a cone is 555 \pi cm^2 and the radius is 15.1 what is the slant height?
pishuonlain [190]
We know that
[LA]=pi*r*l
where
LA is the lateral area of the cone
r is the radius
l is the slant height
l=LA/(pi*r)
r=15.1 cm
LA=555*pi cm²
l=(555*pi)/(pi*15.1)----> l=36.75 cm

the answer is
the slant height is 36.75 cm
7 0
3 years ago
Other questions:
  • A lamp is on sale for 10% off the regular price of $159. What is the sale price of the lamp?
    15·2 answers
  • 1) If f(x) = 3x2 – Bx + 4 and f(-1) = 12, what is the value of B?
    13·1 answer
  • An angle bisector of a triangle divides the opposite side of the triangle into segments 5 cm and 4 cm long. A second side of the
    11·1 answer
  • HELP KE PLEASE HELP I NEED HELP
    12·1 answer
  • Someone please help me. In Amad's aquarium, there are 3 goldfish for every 2 neons. There are 21 goldfish. How many neons are in
    7·1 answer
  • Write an equation <br> y=?
    15·1 answer
  • Which of the following statements is TRUE?
    15·1 answer
  • Write the equation of the line that passes through (–2, -1) and is perpendicular to 2y=3x-5
    9·1 answer
  • Find the distance between the points (2, 7) and (6, 0).
    14·1 answer
  • Jenny randomly selects 20 boxes of crayons from the shelf and finds two boxes with at least one broken crayon. If the shelf hold
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!