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
Phantasy [73]
4 years ago
8

X^2-81=0 solve the question

Mathematics
2 answers:
WARRIOR [948]4 years ago
8 0

Answer:

9 and -9

Step-by-step explanation

add 81 to both sides

take square root of both sides

NeTakaya4 years ago
3 0

Answer:

x=+9,-9

Step-by-step explanation:

x^2-81=0\\x^2=81\\x=\sqrt{81}\\x=9,-9

You might be interested in
Use the function below to find F(3).<br> FX)=(1/6)x
Rashid [163]
F(3) = (1/6)3 = 1/2

The answer is 1/2 or 0.5
6 0
3 years ago
Line segment JL has point J located at (4, 10) and point Lat (-2, 3).
hammer [34]

Answer:

1,6.5

Step-by-step explanation:

4-2/2 = 1

10+3/2 = 6.5

1,6.5 is the coordinate of point K

3 0
3 years ago
A picture frame can hold a photograph that is 16 inches long and 12 inches wide. What is the area of the photo that fits the fra
velikii [3]
The answer is 192 square inches
8 0
3 years ago
Read 2 more answers
Point P has coordinates P(-3,5).
Snowcat [4.5K]

P starts at (-3,5)

Move to the right 2 units and you'll get to (-1,5). We add 2 to the x coordinate here.

Then shift the point up three units to get to (-1,8). We add 3 to the y coordinate.

Finally, reflect over the x axis to get the answer (-1, -8)

Note how the y coordinate flipped in sign but the x coordinate stays the same

5 0
3 years ago
Jake buys a fruit smoothie and a protein bar for​ $5.90. Kobe buys 2 fruit smoothies and 4 protein bars. He pays​ $16.80. What i
Andrei [34K]

Answer:

Fruit smoothie: $3.4

Protein bar: $2.5

Step-by-step explanation:

Let x represent cost of fruit smoothie and y represent cost of protein bar.

We have been given that Jake buys a fruit smoothie and a protein bar for​ $5.90. We can represent this information in an equation as:

x+y=5.90...(1)

x=5.90-y...(1)

We are also told that Kobe buys 2 fruit smoothies and 4 protein bars. He pays​ $16.80. We can represent this information in an equation as:

2x+4y=16.80...(2)

Upon substituting equation (1) in equation (2), we will get:

2(5.90-y)+4y=16.80

11.80-2y+4y=16.80

2y=16.80-11.80

2y=5

y=\frac{5}{2}=2.5

Therefore, each protein bar costs $2.5.

Upon substituting y=2.5 in equation (1), we will get:

x=5.90-2.5=3.4

Therefore, each fruit smoothie costs $3.4.

8 0
4 years ago
Other questions:
  • Select the correct answer. What are the values of x in this equation? `x^(2/5) + x^(1/5) + 1 = 3` A. 32, -1 B. 32, 1 C. -32, 1 D
    10·1 answer
  • There are 29 pencils in a basket. 7 of these pencils are green. The rest of them are yellow.
    9·1 answer
  • Brainliest for correct awnser! Over what interval is the function in this graph decreasing?
    10·1 answer
  • The scale on a drawing of a swimming pool is one centimeter equals 4 meters what is the actual length of the pool if it is 10 ce
    15·1 answer
  • The integer 3 is 3 units from 0 on the number line. Which integer is also 3 units from 0 on the number line? Complete the senten
    14·1 answer
  • Median and range <br> math question
    15·1 answer
  • Plz help timed test
    13·1 answer
  • Beth filled 48 jars with paint. If each jar holds 1 pint of paint, how many gallons of paint did Beth use?
    6·1 answer
  • Find the value of X? Help me please
    5·1 answer
  • What is 10+6<br><br> Does anyone know i am really stuck and I need help
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!