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
sammy [17]
3 years ago
10

Solve for x. x^2 + 81 = 0

Mathematics
1 answer:
Ad libitum [116K]3 years ago
8 0

Answer:

Step-by-step explanation:

x^{2} + 81 = 0

x^{2} = -81

x = \sqrt{-81}

x = 9

Hope this helps

plz mark as brainliest!!!!!!!!!!

You might be interested in
7. Seven times a number is equal to 12 more than 3 times the number.
Jet001 [13]

Answer:

7n = 12+ 3n

Step-by-step explanation:

The first thing to do is subtract 3n from 7n. This would get you 4n = 12. 4 times 3 equals 12, so n equals 3.

To check your answer. 21 = 12+9. sure enough it matches our answer

4 0
2 years ago
A recipe for macaroni and cheese calls for 1 cup of shredded cheese
malfutka [58]

Answer:

1 cup

Step-by-step explanation:

for each cup of cheese you need one cup of milk so for every cup of milk you need one cup of cheese :))

5 0
2 years ago
A factory makes 12 bikes in 3 hours. If it keeps making bikes at the same rate, how many bikes will it have made in 8 hours? (HI
Vilka [71]

Answer:32

Step-by-step explanation: 4 bikes every hour so multiply 4 times 8 which is 32

4 0
3 years ago
Which of the following is a perfect square?<br><br>A.) 115<br>B.) 169<br>C.) 154<br>D.) 279
Dvinal [7]

Answer:

B (169)

Step-by-step explanation:

7 0
3 years ago
A family is spending the weekend at a state lodge to attend a special event. Mom says the two-day event costs $48 per person. In
Furkat [3]

Answer:

A

Step-by-step explanation:

A)12

48÷2= {24}1 day per person

24-12=12

6 0
3 years ago
Other questions:
  • If the measure of angle 2 is 92 degrees and the measure of angle 4 is (1/2x) degrees what is the value of x?
    8·2 answers
  • Express 60,000 using exponents
    8·1 answer
  • Multiples of 9 less than 80
    12·1 answer
  • Somebody please help me with this
    13·1 answer
  • The temperature of a city changed by -12°C over a 2-week period the temperature change by the same amount each week write an exp
    9·1 answer
  • Herbert has sold 99, 37, 86, and 73 copeirs in the last 4 months, respectivly. How many copiers will he need to sell this month
    7·1 answer
  • I NEED HELP ASAP Which of the following possibilities will form a triangle
    12·1 answer
  • PLEASE HELP ME I NEED THE ANSWER ASAP THANK YOU SO MUCH!!
    12·2 answers
  • I NEED THIS ASAP ILL GIVE YPU BRAINLIST!
    11·2 answers
  • Jamar has a points card for a movie theater.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!