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
The elevation at sea level is 0 feet. Which of these cities have an elevation that is more than 75 feet away from sea level ?
Jet001 [13]
You need a picture to answer
4 0
3 years ago
What is the equation of the line that passes through the point (-2,3) and is parallel to the line whose equation is y = 3/2x - 4
Kisachek [45]

Answer:

y = 3/2x + 6

Step-by-step explanation:

y = 3/2x - 4

y-intercept through point (-2, 3):

3 = 3/2(-2) + b

3 = -3 + b

b = 6

Equation of line:

y = mx + b

y = 3/2x + 6

**Parallel line share the same slope, in this case 3/2.

8 0
3 years ago
36, ___, ___, 32/3 is a geometric sequence, with some terms missing. First, please solve for "r", the common ratio between each
Ksju [112]

Answer: r = 2/3

Step-by-step explanation:

In a geometric sequence, the consecutive terms differ by a common ratio. The formula for determining the nth term of a geometric progression is expressed as

Tn = ar^(n - 1)

Where

a represents the first term of the sequence.

r represents the common ratio.

n represents the number of terms.

From the information given,

a = 36

The 4th term is 32/3

n = 4

Therefore,

T4 = 32/3 = 36 × r^(4 - 1)

32/3 = 36 × r^3

Dividing both sides if the equation by 36, it becomes

32/3 × 1/36 = r^3

8/27 = r^3

Taking cube root of both sides of the equation, it becomes

(8/27)^1/3 = r^3 × 1/3

r = 2/3

3 0
3 years ago
Find the measure of the missing angles <br> b=<br> c=
Vesnalui [34]

Answer:

b=20

c=160

Step-by-step explanation:

b has the same measurement as the other angle that is across from it. c is 160 because the line that c is on is a straight line so it is 180 degrees, you subtract the other angle on the line,20, then you get the answer.

8 0
3 years ago
Read 2 more answers
A student is using a map in which the features are distorted and the land size is more accurate near the equator.
Snezhnost [94]
A flat map I think sorry if it’s wrong
8 0
3 years ago
Read 2 more answers
Other questions:
  • 225.286 rounded to hundredths on a numberline
    7·2 answers
  • 39+5h+4g-2h i have been trying 2 work this out 4 ages so plz help
    14·2 answers
  • The daily production cost, C, for x units is modeled by the equation:
    12·2 answers
  • Ms. Carson's art class made a large rectangular mural. The length of the mural is 9 feet, and it's area is 72 square feet. What
    8·2 answers
  • Find an acute angle whose sine is 0.52
    9·1 answer
  • Alex is thinking of a number.
    5·1 answer
  • (a) has no solutions.<br><br>(b) has infinitely many solutions.<br><br>(c) has exactly one solution.
    9·1 answer
  • Slove by using elimination <br> 3x+7y=27 <br> -3x+y=21
    9·1 answer
  • Help me with PART B!!! Use image to help!!
    8·1 answer
  • ASAP WHO CAN ANSWER THESE BOTH IF YOU DONT KNOW DO NOT ANSWERR :)
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!