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
grigory [225]
3 years ago
8

you have decided to hire a disc jockey for your party. the second dj you interviewed has 3 times as many songs as the first dj.

the third dj had half as many songs as the second dj. write an expression to represent the number of songs the third has if the first dj had r songs. explain how you arrived at your answer
Mathematics
2 answers:
irina [24]3 years ago
7 0

Answer:

The third DJ had (3r)/2 songs. Multiply r by 3 because the second DJ had 3 times as many as the first. Then divide that number by 2 because the third DJ has half as many.

Step-by-step explanation:

just did

mario62 [17]3 years ago
6 0

Answer:

The third DJ had (3r)/2 songs. Multiply r by 3 because the second DJ had 3 times as many as the first. Then divide that number by 2 because the third DJ has half as many.

Step-by-step explanation:

You might be interested in
twice a number plus three times another number equals 4. three times the first number plus four times the other number is 7. wha
Drupady [299]

Answer:

x=5, y=-2. (5, -2).

Step-by-step explanation:

2x+3y=4

3x+4y=7

----------------

3(2x+3y)=3(4)

-2(3x+4y)=-2(7)

----------------------

6x+9y=12

-6x-8y=-14

-----------------

y=-2

2x+3(-2)=4

2x-6=4

2x=4+6

2x=10

x=10/2

x=5

5 0
3 years ago
Carlos has taken an initial dose of a prescription medication.
Marat540 [252]

Answer:

3.48 hours

Step-by-step explanation:

The equation is:

M(t)=20 e^{-0.86t}

Where

M(t) is the amount of medication remaining in mg

t is the time it takes, in hours

The questions asks HOW LONG it will take to make the remaining medication to 1 milligrams (1 mg)??

We have to substitute M(t) with "1" and find the corresponding value of "t". We will use natural log to solve this. Shown below:

M(t)=20e^{-0.86t}\\1=20e^{-0.86t}\\0.05=e^{-0.86t}\\Ln(0.05)=Ln(e^{-0.86t})\\Ln(0.05)=(-0.86t)Ln(e)\\t=\frac{Ln(0.05)}{-0.86}\\t=3.48

<u>Note: </u> Ln(e) = 1

This means, the amount of time it will take is about 3.48 hours

8 0
3 years ago
-90 = -100 + x help need answer
d1i1m1o1n [39]

Answer:

10 =x

Step-by-step explanation:

-90 = -100 + x

Add 100 to each side to isolate x

-90+100 = -100+100 + x

10 =x

4 0
2 years ago
Alex plays hockey. He needs to buy a new hockey stick and skates. The hockey stick costs $80 and new skates cost $300. Alex has
Umnica [9.8K]
The answer would be 303.62 if I’m not mistaken
6 0
3 years ago
Find the 14th term of the following geometric sequence.<br> 4, 8, 16, 32, ...
xz_007 [3.2K]

Answer:

65536

Step-by-step explanation:

multiply each term by 2 until you get to the 14th term. the 14th term is 65536

4 0
3 years ago
Read 2 more answers
Other questions:
  • In a group of 60 students, 12 students take Algebra I, 18 students take Algebra II, and 8 students take both subjects. How many
    7·2 answers
  • PLEASE HELP ME asap Compare the two ratios by entering &gt;, &lt; , or = in the box.
    7·1 answer
  • Determine the intercepts of the line that passes through the following points
    11·1 answer
  • Two fire trucks on the ground on either side of a burning building are 1.3 miles apart. They each measure the angle of elevation
    10·1 answer
  • What is the value of a in simplest form?
    12·1 answer
  • 1. Mrs. Gribble went to the grocery store and spent $10.80 on pizzas, $4 on apples, and $29.99 on diapers. How much money did Mr
    9·1 answer
  • PLEASE HELP!
    9·1 answer
  • Y = -4x - 5 <br>y = 3x - 2 <br><br>Is (3, 7) a solution of the system?<br><br>Will give brainliest!​
    14·1 answer
  • Chaise's mom buys canned tuna for lunches. The cans are in the shape of a cylinder with the dimensions shown below.
    5·2 answers
  • 25) Ted spent $25 on a shirt and $89 on a pair of shoes. Ted had $40 left in his wallet. How much money did Ted have before he s
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!