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
kogti [31]
3 years ago
9

Which are solutions to the following equation? x^2=21

Mathematics
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

x

=

±

√

21

Explanation:

To find

x

2

you have to find the square root of

21  x = ± √ 21 ≈ ± 4.5286

Step-by-step explanation:

You might be interested in
A parent volunteer group is raising money by making custom hats to sell at school activities. They plan to sell the hats for $12
Misha Larkins [42]

Answer:

B. (12-6) n - 50

Step-by-step explanation:

Given that:

Cost of making hat = $6 per hat

Selling price = $12 per hat

Advert cost = $50

Number of hats made = n

The profit or money raised from the sales of hat:

Total Revenue from sales - total cost of production - advert cost

Total Revenue from sales = ($12 * n) = $12n

Total cost of production = ($6 * n) = $6n

Advert cost = $50

Hence,

12n - (6n + 50)

12n - 6n - 50

(12 - 6)n - 50

8 0
3 years ago
An answer would be nice ​
liberstina [14]

Answer:

1) 90

Step-by-step explanation:

157.50 / 7 = 22.50 or 270 / 12 = 22.50

22.50 * 4 = 90

5 0
3 years ago
Read 2 more answers
Help please. I need the answer.
Deffense [45]
Create and solve an appropriate equation:  Maria's earnings = Liam's earnings

                                                                       0.20x                 = $625+0.10x.

Find x.

0.10x = $625; thus, x = $6250.  At this level of food sales, these two people earn the same amount.
3 0
3 years ago
Math help what is the answer will give brainliest.
artcher [175]
The two equations are
x + y = 7
and
4x + 2.5y = 22
the first equation can be solved for x to be
x = 7 - y
next you can substitute x in the second equation
4(7 - y) + 2.5y = 22
Distribute 4 to everything in the parentheses
28 - 4y + 2.5y = 22
combine like terms:
28 - 1.5y = 22
subtract 28 from both sides of the equation
- 1.5y =  - 6
divide both sides by -1.5
y =  4
plug this in to the original equation of x+y=7
x + 4 = 7
subtract 4 from both sides.
x = 3
Final Answer: they bought 3 adult tickets and 4 student tickets


Hope this helps!
7 0
3 years ago
What can happen if the appraised value is lower than the loan applied for?
Oksi-84 [34.3K]
You can talk to the loan officer and get the price reduced
6 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the value for each determinant
    8·1 answer
  • What is 2.30+30= <br>5.30 True or false or<br>2.60 true or false ​
    10·2 answers
  • Calculate the area of a circle whose diameter is 156 square​
    13·1 answer
  • .. an. v. . it V V is going on afield trip to Austin to of Texas History and lo see an I MAX Ruiz day given the number of hours
    14·1 answer
  • A coin is tossed 88 times. what is the probability of getting all tails? express your answer as a simplified fraction or a decim
    6·1 answer
  • List three numbers that are less then 66,100
    10·2 answers
  • The currency exchange for US dollars (USD) to Canadian dollars (CAD) changes daily. If the rate today is one CAD for every $0.85
    12·1 answer
  • PLZZ HELP ME I'LL FAN U N GIVE YOU A MEDAL
    5·1 answer
  • Using the cards,create an improper fraction that is: a) b) c) d) e)
    12·1 answer
  • A school has 575 pupils. 56% of the pupils are boys. how many are girls?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!