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
muminat
3 years ago
5

A DJ has a total of 1075 dance, rock, and country songs on her system. The dance selection is three times the size of the rock s

election. The country selection has 105 more songs than the rock selection. How many songs on the system are dance? Rock? Country?
Please help! This has to do with substituting linear equations.
Mathematics
1 answer:
adoni [48]3 years ago
5 0
D+R+C=1075\\D=3R\\C=R+105\\\\(3R)+R+(R+105)=1075\\5R=970\\R=194\\\\D=3(194)=\\D=582\\\\C=(196)+105=\\C=301

582 dance songs.
194 rock songs.
301 country songs.
You might be interested in
A veteran treated 7 dogs this morning. The list gives the weights in pounds of each dog 41,36,20,36,62,5,6 find the range of the
serious [3.7K]

Answer:

57

Step-by-step explanation:

The range of a data set is

Largest data value - Smallest data value

62 - 5

= 57

The range of the data set is 57 pounds.

8 0
3 years ago
Read 2 more answers
A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a​ single-strand electric
Murrr4er [49]

Answer:

A = 781250\,m^{2}, x = 625\,m, y = 1250\,m

Step-by-step explanation:

The perimeter covered by the electric fence in meters is:

2\cdot x + y = 2500

The area of the rectangle is:

A = x\cdot y

A = x \cdot (2500-2\cdot x)

Let differentiate the previous equation and equates to zero:

2500-4\cdot x = 0

The critical point is:

x = 625\,m

By the Second Derivative Text, it is proved that critical point lead to a maximum:

\frac{d^{2}A}{dx^{2}} = -4

The other side of the rectangle is:

y = 1250\,m

The largest area than can be enclosed is:

A = (625\,m)\cdot (1250\,m)

A = 781250\,m^{2}

The dimensions of the triangle are:

x = 625\,m

y = 1250\,m

3 0
3 years ago
The baker makes54 biscuits in the morning. Then he makes 26 more in the afternoon.
ololo11 [35]

Answer:

80 biscuits

Step-by-step explanation:

The question is not a whole question so I am just assuming that the question is how many biscuits were baked the whole day

Hope this helps :)

6 0
3 years ago
Name three fractions between 4/5 and 4/6 please 10 points
xxMikexx [17]

Answer:

one is 49/60


Step-by-step explanation:


5 0
3 years ago
Help pls!!!!!!!!.....
frutty [35]

Answer:

-16.2= v

Step-by-step explanation:

-8.9= v+7.3

v= -8.9-7.3

v = -16.2

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is 4/16 simplify
    15·2 answers
  • A bank is offering you an introductory credit card promotion. Your interest for the first year is 8%. But, at the beginning of t
    10·1 answer
  • 1. What is the hypothesis for this conditional statement? If a number is even then it is divisible by 2.
    11·1 answer
  • What is the surface area of this prism? A. 120 cm2 B. 122 cm2 C. 240 cm2 D. 184 cm2
    11·1 answer
  • The Dittany family's vegetable garden is shaped like a scalene triangle. Two of the sides measure 6 feet and 10 feet. Which coul
    13·1 answer
  • Find the value of the variables. Diagram above.<br> Tysm please help very urgent!
    14·1 answer
  • How many roots does the polynomial equation have?
    10·1 answer
  • 13 ounces to pound as a fraction
    8·1 answer
  • Ethan spends 4 dimes on a plastic crab and then Sophia buys a pink flamingo pen for 1 quarter how much money do they spend in al
    10·1 answer
  • Factorise fully 6x^2 - 15x
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!