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
Andreyy89
3 years ago
14

Please solve equation -3x2+243=0

Mathematics
2 answers:
blsea [12.9K]3 years ago
5 0
-3x^2+243=0\\
\\
-3x^2=-243\\
\\
x^2=\frac{-243}{-3}\\
\\
x^2=81\\
\\
x=\pm\sqrt{81}\\
\\
\boxed{x=\pm9}
Illusion [34]3 years ago
3 0
Answer is 9.

-3x^2 + 243 = 0
Bring 243 to the right.
-3x^2 = -243
Divide by -3.
x^2 = 243/3 = 81
Tak the square root of both sides.
x = 81^1/2 = 9.
You might be interested in
Find an equation for the line below <br> (Pls provide explanation)
leonid [27]

Answer:

y=-2/4x + (-4.5)

Step-by-step explanation:

so first we look for the slope which is rise/run.

start with the lower point and count up two.

the count to the left and you have -2/4, thats your slope.

then you chose one point, like (1,-5)

so either using point slope form y-y1=m(x-x1) or standard form y+mx+b

im going to use standard form

plug in your points like so:

y= -2/4x +b

-5= -2/4(1) +b

-5 = -1/2 + b

-5+ 1/2 = b

-4 1/2 =b

so y should equal

y=-2/4x + (-4.5)

im not sure but i hope this helps a bit

7 0
2 years ago
Simplify 8 - (-5) - 4(-7).
IgorC [24]

Answer:41

Step-by-step explanation:

8 - (-5) - 4(-7) = 8+5+4*7=13+28=41

7 0
3 years ago
A caterer charges $500 plus $30 per guest to cater a wedding. Walt and Traci don't want to spend more than $8000 on catering. Wr
Irina-Kira [14]
500 + 30g <span>≤ 8000
30g </span><span>≤ 7500
g </span><span>≤ 250</span>
3 0
3 years ago
Read 2 more answers
PLEASE I BEG OF U HELP - ill give brainliest
Inga [223]

Answer:

123 cm²

Step-by-step explanation:

You add the sum of all the faces in the shape

8 0
3 years ago
Read 2 more answers
A military cannon is placed at the base of a hill. The cannon is fired at an angle toward the hill. The path
katrin [286]

Answer:

Algebracicaly speaking the answer would be either -13.3876 or - 158.612 through the quadratic equation, but these answers don’t make sense in this real world scenario.

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Kelly is going to shop with the $200.00 that she earned from doing chores. She wants to save 30% of her money to put into a savi
    7·1 answer
  • Ben bought 12 pounds of apples for $6?use the ratio table to find cost of buying 3 pounds of apples
    5·1 answer
  • In 1991, the moose population in a park was measured to be 4360. By 1999, the population was measured again to be 5880. If the p
    8·1 answer
  • −6⋅2⋅|−8|= <br><br> Please help me..
    8·2 answers
  • 1. f(x) = 3x^3 - x^2 - 2x<br> what are the possible rational zeros for this?
    10·2 answers
  • A pyramid has cross-sectional shapes, taken parallel to its base, that are ______ to one another.
    13·1 answer
  • Subtract-X2 + 9x -- 6 from 4x + 8 plz explain​
    14·1 answer
  • If the measure of FGH IS 64º and the measure of EGD is (4x+8), what is the value of x?
    7·1 answer
  • If x2 mx m is a perfect-square trinomial, which equation must be true?.
    6·1 answer
  • PLS HELP IF POSSIBLE ASAP
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!