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
Rama09 [41]
3 years ago
12

Solve the equation 7x^2+21=0

Mathematics
1 answer:
Radda [10]3 years ago
6 0
Subtract 21 from both sides
7x^2=-21
Divide by seven on both sides
X^2=-3
Square root both sides

***X= square root of -3***
:)
You might be interested in
Can anyone simplify 2d-7=11d+26? Or any of the questions for that matter?
Flura [38]
2d-7=11d+26
-2d-26=-2d-26
-33/9=9/9d
d= -33/9
d= - 11/3
Is this what you're asking for?
4 0
3 years ago
Identify the property that is demonstrated below:
Mila [183]
Commutative property of multiplication is the answer that you're looking for.
8 0
4 years ago
Which choice would transform the rectangle to quadrant IV?
8090 [49]

Answer:

reflect over the x-axis​

Step-by-step explanation:

Transformation is the movement of  point from its initial location to a new location. Types of transformation is rotation, reflection, translation and dilation.

If a point A(x, y) is rotated 180° clockwise about the origin the new position would be A'(-x, -y)

If a point A(x, y) is reflected over the y-axis the new position would be A'(-x, y).

If a point A(x, y) is reflected over the x-axis the new position would be A'(x, -y)

If a point A(x, y) is translated a units left the new position would be A'(x-a, y).

The rectangle has points at (2, 2), (2, 5), (7,2), (7,5). If the rectangle is reflected over the x-axis the new position would be at (2, -2), (2, -5), (7, -2), (7, -5) which is at the fourth quadrant

4 0
3 years ago
AWNSER plz as soon as possible
lesya [120]

Answer:

a,a,c,d,b

Step-by-step explanation:

lol goodd luck

6 0
4 years ago
Celesta used to spend 90 minutes a day on the phone. Now she spends 60 minutes a day. What is the PERCENT DECREASE?
Andrews [41]

Answer:

-210

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is the greatest common factor of 24jk and 32jkm
    7·1 answer
  • Round 2.6 to the nearest tenth
    7·1 answer
  • A girl wants to go home in a taxi she lives 7 miles away the taxi firm charges four dollars plus $1.50 per mile how much will th
    15·1 answer
  • Factorise 18pq-12p<br> -
    7·1 answer
  • Dilating a triangle changes the angles and side length of the triangle<br> A.True<br> B.False
    15·2 answers
  • Can someone please do this ill mark brainliest
    7·1 answer
  • Which expression is equivalent to C^2-4/c+3 divided by c+2/3(c^2-9)
    14·1 answer
  • A plane travels at a constant speed. It takes 6 hours to travel 3360 miles. A. What is the planes speed in miles per hour? B. At
    15·2 answers
  • Ben and Michael are brothers. Ben is four times as old as Michael and their combined ages are 25. How old is Ben?
    10·2 answers
  • In a reflection, pairs of corresponding points lie on parallel lines.<br> True or False?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!