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
viva [34]
3 years ago
5

Will mark brianliest please help

Mathematics
1 answer:
MrRissso [65]3 years ago
4 0

Answer:

See below.

Step-by-step explanation:

7x^2 = 343                     Divide both sides by 7

7x^2/7 = 343/7

x^2 = 49                         Take the square root of both sides.

sqrt(x^2) = sqrt(49)

x = +/- 7

Answers

  • 7
  • - 7
  • sqrt(49)
  • - sqrt(49)

I think the last two are kind of iffy. I'm not sure you can call them solutions, but the question probably assumes they are. If you use all four answers and get it wrong, them submit +7 and - 7.  

You might be interested in
Twice the sum of a number is 9 is equal to three times the difference of the number and 7
soldi70 [24.7K]
First, write put the information into an equation

2*(x+9) = 3*(x-7)

distribute the 2 and 3
2x + 18 = 3x - 21

Combine like terms (Xs and munbers) (in this case, it's easier to add 15 to both sides and subtract 2x from both sides so both sides end up being positive)
33 = x

x=33
3 0
3 years ago
Read 2 more answers
True or False: The value of r represents the reference angle when plotting a point in polar coordinates.
LenKa [72]
The answer to the statement above would be false. The value of r does not represent the reference angle when plotting a point in polar coordinates. Instead, it represents the polar distance instead of the angle. The reference angle is represented by <em>t.</em>
4 0
3 years ago
Read 2 more answers
A rectangle has vertices at these coordinates (1,2),(3,2),(1,-8) what of the forth vertex of the rectangule helppppp
s344n2d4d5 [400]
If you plot those points, you just need to see where the extended sides intersect, or meet. (3, -8)

8 0
3 years ago
If f(x) = 2x2 – 2, what is<br> X, what is f(-6)<br> give the right answer for a brilliant!
NARA [144]

Answer:

f(- 6) = 70

Step-by-step explanation:

To evaluate f(- 6) , substitute x = - 6 into f(x)

f(- 6) = 2(- 6)² - 2 = 2(36) - 2 = 72 - 2 = 70

5 0
3 years ago
The dance committee consisted of 8 students. The committee will select three officers at random. What is the probability that Ma
Sophie [7]
3/24
I’m guessing cause you times 3 by 8 to get 24 which is the amount of possibilities
3 0
3 years ago
Other questions:
  • The sum of 7 and the cube of a number
    8·2 answers
  • What is additive property
    5·1 answer
  • i have the same hundreds digit as ones digit the value of my tens digit is 50 the value of my ones digit is 4 what is my 3 digit
    11·2 answers
  • Write an equation of the line with slope 2/3 that goes through the point (- 2, 5) .
    5·1 answer
  • plz help !! write two real world situations that you can model using the exponential function f(x)=2 to the power of x
    6·1 answer
  • Keith bake 3 cherry pies and 2 apple pies.He wants to share each pie equally among 6 of his neighbors. How much of each type of
    7·1 answer
  • The equation of a line is y=mx+ 4. What is the value of m if the line passes through point (−3, 7)?
    7·2 answers
  • Tanya is a professional shopper and is always looking for the better deal. She was looking to purchase a new television and foun
    7·2 answers
  • The radius of a circle is 4 meters. What is the angle measure of an arc ​ meters long?
    8·1 answer
  • The value of y varies directly with x, and y = 18 when x = 12. Find y when x = 60.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!