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
Sphinxa [80]
3 years ago
9

Solve u2 =81 , where u is a real number show steps

Mathematics
1 answer:
Andrej [43]3 years ago
7 0
<h2>Hey there! </h2><h2>\bold{u^2=81}</h2><h3>Take your SQUARE ROOT</h3><h3>\bold{New\ equation: x\pm \sqrt{81}}\\ \\ \bold{\sqrt{81}=9}\\ \\ \bold{-\sqrt{-81}=-9}\\ \\ \\ \\ \boxed{\boxed{\bold{Answer: x=-9\ or\ x =9}}}\huge\checkmark</h3><h3>Good luck on your assignment and enjoy your day!</h3><h3>~\frak{LoveYourselfFirst:)} </h3><h2 />
You might be interested in
A box of crackers has 24 grams of fat. the box contains 8 servings. what is the unit rate?
andrezito [222]
The unit rate is 24÷8
Answer 3 grams
8 0
4 years ago
Solve for x given the lines are parallel.<br> (7x - 8)<br> 62°
QveST [7]

Answer:

The answer is 0 ✌

Step-by-step explanation:

70 - 8 =62°

3 0
3 years ago
_16. Which expression is equivalent to
Phantasy [73]

Answer:

-2x-8

Step-by-step explanation:

1) Distribute:

-6/3x+-15/3-3

2) Simplify:

-2x-5-3

3) combine like terms:

-2x-8

hope this helps

5 0
4 years ago
Thomas buys a cardboard sheet that is 12 by 8 inches. Create an equation for this situation, find the zeros, and sketch the func
Karo-lina-s [1.5K]
For the answer to the question above,

1. If we let x as the side of the square cut-out, the formula for the capacity (volume) of the food dish is:
V = (12 - 2x)(8 - 2x)(x)
V = 96x - 40x^2 + 4x^3
To find the zeros, we equate the equation to 0, so, the values of x that would result to zero would be:
x = 0, 6, 4

2. To get the value of x to obtain the maximum capacity, we differentiate the equation, equate it to zero, and solve for x.
dV/dx = 96 - 80x + 12x^2 = 0
x = 5.10, 1.57
The value of x that would give the maximum capacity is x = 1.57

3. If the volume of the box is 12, then the value of x can be solved using:
12 = 96x - 40x^2 + 4x^3
x = 0.13, 6.22, 3.65
The permissible value of x is 0.13 and 3.65

4. Increasing the cutout of the box increases the volume until its dimension reaches 1.57. After that, the value of the volume decreases it reaches 4.

5. V = (q -2x) (p - 2x) (x)
7 0
3 years ago
i need help pls i need to put my grades up before the end of the semester 20 pionts for who ever answers have a hood night from
Licemer1 [7]

Answer:

Step-by-step explanation:

a + 2 + a+2 + a + 2 = 24              Combine the left

3a + 6 = 24                                  Subtract 6 from both sides.

3a = 24 - 6                                   Combine

3a = 18                                         Divide both sides by 3

3a/3 = 18/3

a = 6

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is the volume of the pyramid 6ft?
    8·1 answer
  • Point K is between J and L. If JL-162, what is JK?<br> 4x+8<br> 68-6<br> J<br> K K<br> L
    5·1 answer
  • A group of students and workers entering a metro station were asked whether they were riding the bus or the subway. The two-way
    5·2 answers
  • What is 5 times 5?<br> Take the points and dont ask okie?
    15·1 answer
  • A system of equations is shown.
    15·1 answer
  • List five different vocabulary words that could be used to describe each given expression. A. −+ b. 20−3 c. +2
    10·1 answer
  • Bertie Bee's Carpet Cleaners charge $1.22 per square foot to clean carpets. Millie Mott's Carpet Cleaners charge $9.50 per squar
    7·1 answer
  • 100 points
    8·2 answers
  • Question 9 (10 points)
    11·1 answer
  • TWO DVDs and one videocassette tape cost $72. One DVD and two videocassette tapes
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!