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
faust18 [17]
3 years ago
13

And this one. Thank you

Mathematics
1 answer:
vekshin13 years ago
5 0

Answer:

D. 390

Step-by-step explanation:

9(21)+3(3)(21)+12

You might be interested in
Which one of the following is true when ds/st =3t^2/2s
Zina [86]
Middle school math!  I actually know how to teach differential calculus to middle schoolers, but I wouldn't start with this example, where we're gonna have to integrate eventually.

We have

\dfrac{ds}{dt} = \dfrac{3t^2}{2s}

We have an odd mix of s and t on the right, which means this probably was an implicit derivative to begin with.  In other words, instead of s as a function of t, we have some equation of s and t that is satisfied.

We move the variables to their respective sides 

2s \ ds = 3t^2 dt

Integrating,

s^2 =t^3 + C

We only need one constant of integration.

I won't bother to write the square root. This is choice D.

7 0
3 years ago
Mr. Mole's burrow lies 5 meters below the ground. He started digging his way deeper into the ground, descending 3 meters each mi
Sati [7]

Answer is that Mr mole goes 3 each minute for each minute add on those 3 as you add on those 3 write it down counting how many then you know the time and the meters hes been digging

5 0
3 years ago
in a recent survey 15% of online shoppers in the united states say that they prefer to do business only with large well-known re
sveta [45]
The answer is 225
I got that by mulitplying .15 by 1500
3 0
3 years ago
Read 2 more answers
How many ways can Gary, Cayla, and
Kryger [21]

Answer:

6

Step-by-step explanation:

G,C,P

C,P,G

P,G,C

G,P,C

P,C,G

C,G,P

4 0
4 years ago
A turtle can walk 1/12 of a kilometer in an hour. The turtle is 1/5 of a kilometer away from a pond. At this speed how long will
Cloud [144]

Answer:

2.4 hours

Step-by-step explanation:

Get common denominators -

1/12 x 5/5 = 5/60

1/5 x 12/12 = 12/60

The turtle walks ata 5/60 a kilometer an hour.

divide remaining time by 5/60

(12/60) / (5/60) = 2.4 hours

4 0
3 years ago
Read 2 more answers
Other questions:
  • After the release of radioactive material into the atmosphere from a nuclear power plant in a country in 1984​, the hay in that
    5·1 answer
  • the perimeter of a standard sized rectangular rug is 24 ft. the length is 2 ft longer than thw width. find the dimensions
    14·1 answer
  • What steps transform the graph of y=x^2 to y= -(x+3)^2+5
    8·1 answer
  • Please help!!!!<br> Solve the following inequality -1/2 p &lt; -16
    6·1 answer
  • A grade school teacher has developed several ideas about how to improve her students’ learning outcomes, and now she needs to pi
    14·1 answer
  • What is the sum of the interior angles of a enneagon (19-sides)
    7·1 answer
  • Describe in your own words how you can recognize the difference between exponential growth and exponential decay
    5·1 answer
  • Between which two numbers is -2/3 located on a number line?
    13·1 answer
  • What’s the answer ? Help this is a test
    14·1 answer
  • The sum of 4 consecutive odd integers is equal to zero. Write an equation to model the sentence. Solve the equation to find the
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!