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
zhannawk [14.2K]
3 years ago
6

6 more than 3 times what number squares is 81

Mathematics
1 answer:
Lisa [10]3 years ago
6 0
When you write that equation, you get 3x^2+6=81.

Solving for x:

Subtract by 6 on both sides of the equation to get 3x^2=75.

Then, divide by 3 on both sides of the equation to get x^2=25.

Finally, do the square root on both sides of the equation to get x=5.

The number is 5.
You might be interested in
Can someone pls help
MakcuM [25]

when x =1 , y = 3

 when x = 3, y =27

27-3 = 24

3-1 = 2

24/2 = 12

 rate of change = 12

3 0
3 years ago
Anyone know how to do this??
Ghella [55]

Answer:

csc²(x)

Step-by-step explanation:

csc(x) = 1/sin(x)

sin²(x) + cos²(x) = 1

=> cos²(x) = 1 - sin²(x)

cos(2x) = cos²(x) - sin²(x) = (1 - sin²(x)) - sin²(x) =

= 1 - 2×sin²(x)

=> 2×sin²(x) = 1 - cos(2x)

sin²(x) = 1/2×(1-cos(2x))

=> 1 - cos(2x) = 2×(1/2×(1-cos(2x)) = 2×sin²(x)

=> 2 / (1-cos(2x)) = 2 / (2×sin²(x)) = 1/sin²(x) =

= 1/sin(x) × 1/sin(x) = csc(x)×csc(x) = csc²(x)

6 0
3 years ago
When 2/3 is added to a certain number, the sum is 3 greater than twice the number. part 1: set up an equation using n to represe
Gennadij [26K]
2/3 + n = 2n + 3 <== ur equation
2/3 - 3 = 2n - n
2/3 - 9/3 = n
-7/3 = n <== ur solution

or
2/3 + n = 2n + 3...multiply everything by common denominator of 3
2 + 3n = 6n + 9
2 - 9 = 6n - 3n
-7 = 3n
-7/3 = n
7 0
3 years ago
Booker owns 85 video games he has 3 shelves to put the games on each shelf can hold 40 video games how many more video games doe
sergey [27]
5 because 

  85
- 40
 ___
  45
- 40
____
  05

3 0
3 years ago
Estimate the amount of tip to include if you want to leave a 20% tip on a Lyft ride of<br> $8.
tankabanditka [31]

Answer:

1.6$

Step-by-step explanation:

first you multiply 8 with 20 and then divide it with 100

you will get the answer of 1.6$

6 0
2 years ago
Other questions:
  • Nicole used 3/8 of her ribbon to wrap a present. If she used 6 feet of ribbon for the present, how much ribbon did Nicole have a
    6·1 answer
  • Alex and Ben were given a total of £240 They shared the money in the ratio 5:7
    6·1 answer
  • A car has a windshield wiper on the driver's side that has total arm length of 10 inches. It rotates
    6·1 answer
  • In a quadratic equation, if a is positive, then the vertex will be a minimum or maximum?
    13·1 answer
  • A woman wishes to rent a house within 9 miles of her work. If she lives x miles from her work, her transportation cost will be c
    14·1 answer
  • There is triangle ABC triangle XYZ is similar to ABC scale factor 1/4
    15·1 answer
  • 3. Triangle ABC has angle measures as noted below. Please note this triangle is not drawn to scale, and the longest leg of the f
    5·1 answer
  • this year benny is 12 years old and his mom is 48 years old, what percent of Benny's age is his mom's age?​
    15·2 answers
  • 3. A beach has a rectangular swimming area for toddlers. One side of the swimming
    6·1 answer
  • Write an expression that has the same value of 5 to the power of 4
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!