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
galina1969 [7]
3 years ago
7

If the population of a town grew 21% up to 15,049. What is the population last year?

Mathematics
1 answer:
aliina [53]3 years ago
5 0
You can try formulating an equation to model this change:

Let 'x' be the population of the town last year. It follows that: 
1.21x = 15049 

and hence 
x =  \frac{15049}{1.21}
You might be interested in
What is the solution(s) to the equation 5a2 - 44 = 81?
taurus [48]

Answer:

B

Step-by-step explanation:

5a^2 - 44 = 81                     Add 44 to both sides

5a^2 = 81 + 44                    Collect like terms

5a^2 = 125                          Divide both sides by 5

a^2 = 125/5                  

a^2 = 25                              Take the square root of both sides

√a^2 = √25

a = +5

a = -5

The answer is B

7 0
3 years ago
What percent of 100.9 is 82??
Oksi-84 [34.3K]

Answer:

81%

Step-by-step explanation:

82/100.9=0.81\\0.81*100=81%

5 0
3 years ago
PLEASE PLEASE HELP
marta [7]

Answer:

Approximately 3 grams left.

Step-by-step explanation:

We will utilize the standard form of an exponential function, given by:

f(t)=a(r)^t

In the case of half-life, our rate <em>r</em> will be 1/2. This is because 1/2 or 50% will be left after <em>t </em>half-lives.

Our initial amount <em>a </em>is 185 grams.

So, by substitution, we have:

\displaystyle f(t)=185\big(\frac{1}{2}\big)^t

Where <em>f(t)</em> denotes the amount of grams left after <em>t</em> half-lives.

We want to find the amount left after 6 half-lives. Therefore, <em>t </em>= 6. Then using our function, we acquire:

\displaystyle f(6)=185\big(\frac{1}{2}\big)^6

Evaluate:

\displaystyle f(6)=185\big(\frac{1}{64}\big)\approx2.89\approx 3

So, after six half-lives, there will be approximately 3 grams left.

3 0
3 years ago
Please Answer!
SCORPION-xisa [38]
4a-3

because 4(a-3) what’s in () can’t be done so you go to the next step in pemdas and multiply and then you write it out and your done
7 0
2 years ago
Read 2 more answers
I need help on this cause I got the last one wrong..
mihalych1998 [28]

Answer:

"All integers are irrational numbers" False

"No whole numbers are irrational numbers" True

"Some rational numbers are not integers" True

"Some integers are not whole numbers" True

Step-by-step explanation:

I'm 100% sure of this.

5 0
2 years ago
Other questions:
  • o paint a house, two painters are hired. The first painter can paint the entire house in ten hours. The second painter will need
    11·1 answer
  • HELP! Due in 10 mins! Pls I rlly need this!!!
    6·1 answer
  • Find the product.<br><br> a^4(3a ^2 - 2a + 1)
    12·1 answer
  • The upper-left coordinates on a rectangle are (-4,4), and the upper-right coordinates are (4,4).The rectangle has an area of 8 s
    12·2 answers
  • 3. Write a recursive algorithm of the sequence t(1)=1 and t(n)=n2 t(n-1) as a function.
    15·1 answer
  • Write as a fraction 30:40
    13·2 answers
  • Kesha is choosing a 3 letter password from the letters ABCDE the password cannot have the same letter repeated in it how many su
    6·1 answer
  • HELP LOL i have no idea it might be just me
    12·2 answers
  • Divide 2 tonnes in the ratio 2:3.
    11·1 answer
  • What is a equivalent expression to 4(5t - 7)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!