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
Agata [3.3K]
3 years ago
7

PLEASE PLEASE HELP

Mathematics
1 answer:
marta [7]3 years ago
3 0

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.

You might be interested in
2(x -9) = 9 divided ( - 1/3) what value of x makes the equation true <br> plsss help :)))
Ivanshal [37]

Answer:

x = -9/2

Step-by-step explanation:

1. Divide 9 by -1/3:

\frac{9}{1} ÷ -\frac{1}{3} = \frac{9}{1} · -\frac{3}{1}

= -27

2. Divide both sides by 2:

2(x - 9) = -27

\frac{2(x-9)}{2} = \frac{-27}{2}

(x - 9) = -\frac{27}{2}

3. Add 9 to both sides:

x = -\frac{9}{2}

(or 4.5 if you need it in decimal form)

hope this helps!

6 0
2 years ago
Please? I need help here
Yuki888 [10]

Answer:

<h2>D</h2>

Step-by-step explanation:

If pair of ratios does form a true proportion then:

a:b=c:d\to\dfrac{a}{b}=\dfrac{c}{d}\to ad=bc

A)\\\\8:14=20:35\to\dfrac{8}{14}=\dfrac{20}{35}\\\\(8)(35)=(14)(25)\\\\280=280\qquad\bold{TRUE}\\\\b)\\\\\dfrac{6}{10}=\dfrac{15}{25}\\\\(6)(25)=(10)(15)\\\\150=150\qquad\bold{TRUE}

c)\\\\\dfrac{9}{5}=\dfrac{27}{15}\\\\(9)(15)=(5)(27)\\\\135=135\qquad\bold{TRUE}\\\\d)\\\\12:15=30:50\to\dfrac{12}{15}=\dfrac{30}{50}\\\\(12)(50)=(15)(30)\\\\600=450\qquad\bold{FALSE}

3 0
3 years ago
Two buildings have 60 floors altogether. Building A has 3 floors for every 2 floors of building B.How many floors does each buil
ollegr [7]
For this question, building A would have 36 floors, and building B would have 24 floors. I hope I helped!

Please let me know if I was right! Thanks!
6 0
2 years ago
A pizzeria will only deliver to locations within a certain distance of the pizzeria. The delivery region has an area of 36pi squ
shusha [124]

No

Step-by-step explanation:

she lives 10 miles away and the pizzeria only has a 6 mile radius.

0 0
3 years ago
The ratio equation used to find percent is...
Serhud [2]

Answer: C

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • What is 6,312 divided by 8
    14·2 answers
  • Which statements are true about the shapes? Select three options.
    8·2 answers
  • Can you explain to me (detailed) on how to do this problem? I will give you a brainly if you get this right.
    7·2 answers
  • Why might you expect most absolute value equations to have two solutions? Why not three or four?
    10·1 answer
  • Please help! I’m bad at fractions
    9·1 answer
  • Which set of measures could represent the length of the sides of a right triangle?
    15·1 answer
  • Figure CDEF is similar to figure KLMN.
    11·1 answer
  • 15)<br> 125°<br> ?<br> Help me plzzz
    10·1 answer
  • Help me with this one as fast as u can
    14·1 answer
  • 2. Pat is making flower bouquets. She has 12
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!