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
Ivanshal [37]
3 years ago
11

In a recent survey, three out of every five teenagers said they listen to music while studying.

Mathematics
1 answer:
Virty [35]3 years ago
7 0

Answer:

225

Step-by-step explanation:

3 out of 5 is .6 is u multiply .6 by 375 you get 225

You might be interested in
How do I get 1/4 of $3.20
leva [86]
" of " means multiply

1/4 * 3.20/1...and just multiply....(1 * 3.20) / (4 * 1) = 3.20/4 = 0.8
or
1/4 = 0.25.....0.25(3.20) = 0.8
8 0
3 years ago
Read 2 more answers
Write the given second order equation as its equivalent system of first order equations. u′′−5u′−4u=1.5sin(3t),u(1)=1,u′(1)=2.5
lakkis [162]

Answer:

hi your question options is not available but attached to the answer is a complete question with the question options that you seek answer to

Answer:  v = 5v + 4u + 1.5sin(3t),

  • 0
  • 1
  •  4
  • 5
  • 0
  • 1.5sin(3t)
  • 1
  •  2.5

Step-by-step explanation:

u" - 5u' - 4u = 1.5sin(3t)        where u'(1) = 2.5   u(1) = 1

v represents the "velocity function"   i.e   v = u'(t)

As v = u'(t)

<em>u' = v</em>

since <em>u' = v </em>

v' = u"

v'  = 5u' + 4u + 1.5sin(3t)   ( given that u" - 5u' - 4u = 1.5sin(3t) )

    = 5v + 4u + 1.5sin(3t)  ( noting that v = u' )

so v' = 5v + 4u + 1.5sin(3t)

d/dt \left[\begin{array}{ccc}u&\\v&\\\end{array}\right]= \left[\begin{array}{ccc}0&1&\\4&5&\\\end{array}\right]  \left[\begin{array}{ccc}u&\\v&\\\end{array}\right] + \left[\begin{array}{ccc}0&\\1.5sin(3t)&\\\end{array}\right]

Given that u(1) = 1 and u'(1) = 2.5

since v = u'

v(1) = 2.5

note: the initial value for the vector valued function is given as

\left[\begin{array}{ccc}u(1)&\\v(1)\\\end{array}\right]  = \left[\begin{array}{ccc}1\\2.5\\\end{array}\right]

7 0
3 years ago
1. A sum of money is shared among Jessica, Amanda, and Beverly in the ration 8:9:3
astra-53 [7]

Answer:

$200

Step-by-step explanation:

Amanda       Beverly

     9         :       3

difference between Amanda and Beverly = 9 - 3 = 6 portions.

∴ value of 6 portions = $60

   value of 1 portion  =  $ 60 / 6

                                  = $10

Total no. of portions = 8 + 9 + 3 = 20

Total sum of money to be shared = value of 1 portion x Total no. of portions

                                                         = $10 x 20

                                                         = <u>$200</u>

8 0
2 years ago
I will mark you brainliest!
kari74 [83]

Answer:

F(x) < 0 over the intervals (-∞, -0.7) and (0.76, 2.5).

Step-by-step explanation:

The line is below the x-axis at those intervals

7 0
3 years ago
Evaluate A2 for A = -3.<br><br> -9<br> -6<br> 6<br> 9
Slav-nsk [51]

A^2

-3^2 = 9

 the answer is 9

6 0
3 years ago
Other questions:
  • Solve the equation (2^2x)/( 2^x+5) = 1 algebraically using two different initial steps as directed below.
    9·1 answer
  • What is the answer for 44/p= 11/5 p=_____
    15·1 answer
  • What is the inverse of this function? <br> f(x)=y=3x/8+x
    10·1 answer
  • I need help on this question plz
    8·1 answer
  • a bicycle advertised all mountain bikes priced at a 1/3 discount what is the discount price of the bicycle
    14·1 answer
  • Adequate Preparation for Retirement. In 2018, RAND Corporation researchers found that 71% of all individuals ages 66 to 69 are a
    11·1 answer
  • I need help with my math test someone please help
    12·2 answers
  • Need some help please ​
    6·1 answer
  • Help im on a meeting this need to be done
    10·1 answer
  • There is a stack of 10 cards, each given a different number from 1 to 10. Suppose we select a card randomly from the stack, repl
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!