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
sergeinik [125]
3 years ago
6

Adrian is a songwriter who collects royalties on his songs whenever they are played in a commercial or a movie. Adrian will earn

$40 every time one of his songs is played in a commercial and he will earn $130 every time one of his songs is played in a movie. Adrian earned a total of $1010 in royalties on 14 commercials and movies. Write a system of equations that could be used to determine the number of commercials and the number of movies on which Adrian's songs were played.
Mathematics
2 answers:
seraphim [82]3 years ago
6 0

Answer:

Step-by-step explanation:

Let number of songs are played in a commercial be a

     number of songs are played in a movie be b

Adrian earned a total of $1010 -> a*40 + b*130 = 1010  (1)

14 commercials and movies -> a+b = 14                          (2)

(1) - (2)*40 =  a*40 + b*130 - a*40 -b*40 = 1010 -14*40

-> b*90 = 450

-> b = 5

-> a = 14-5 = 9

Setler [38]3 years ago
5 0

Answer:

\text{Let }c=

Let c= the number of commercials

Let m= the number of movies

40c+130m=1010

c+m= 14

Step-by-step explanation:

Because i just did it in Delta Math

You might be interested in
I need help with this question.
Makovka662 [10]
The monthly rent of the apartment is x = 1310 dollars a month

8 0
3 years ago
Rewrite the expression<br> as a<br> single rational number,<br> 4<br> 80 + (-22<br> 15<br> )
Irina-Kira [14]

Answer:

57 11/15

Step-by-step explanation:

ok

3 0
3 years ago
A newly hired basketball coach promised a high-paced attack that will put more points on the board than the team’s previously te
puteri [66]

Answer:

a. z = 2.00

Step-by-step explanation:

Hello!

The study variable is "Points per game of a high school team"

The hypothesis is that the average score per game is greater than before, so the parameter to test is the population mean (μ)

The hypothesis is:

H₀: μ ≤ 99

H₁: μ > 99

α: 0.01

There is no information about the variable distribution, I'll apply the Central Limit Theorem and approximate the sample mean (X[bar]) to normal since whether you use a Z or t-test, you need your variable to be at least approximately normal. Considering the sample size (n=36) I'd rather use a Z-test than a t-test.

The statistic value under the null hypothesis is:

Z= X[bar] - μ  = 101 - 99 = 2

σ/√n 6/√36

I don't have σ, but since this is an approximation I can use the value of S instead.

I hope it helps!

7 0
3 years ago
Help Me, Will give 100 points.
Bad White [126]

Answer:

baka

Step-by-step explanation:

6 0
3 years ago
A certain hybrid car has a mileage rating of 57 miles per gallon. if the car makes a trip of 293 miles, how many gallons of gaso
dlinn [17]
To determine the number of gallons of gasoline that is used, we need to know the rate of usage of gasoline. This rate would describe the number of gasoline in units of volume that is being used per distance in units of length. In this case, we need the rate in units of miles per gallon. From what is asked and the given values, we simply divide the rate to the the total distance that was traveled by the car. We calculate as follows:

Gallons of gasoline = 293 miles / 57 miles / gallon
Gallons of gasoline = 5.14 gallons

Therefore, about 5 gallons of gasoline was consumed by the hybrid car for a distance of 57 miles.
4 0
3 years ago
Other questions:
  • HELP. Please simplify this expression...
    7·1 answer
  • Find the area of the circle with the given radius or diameter. Use = 3.14. r = 2 A =?
    9·1 answer
  • Between 2000 and 2015 the number of twin births in a certain country increased by 12% to approximately 133,840. About how many t
    8·1 answer
  • Simplify √7 over 2 √11
    9·1 answer
  • Mary paints wooden signs and sells them at craft fairs. The function s(t) approximates how many signs Mary paints per hour. The
    12·2 answers
  • What is the value of x?
    14·1 answer
  • Find the surface area of each figure. round your answer to the nearest tenth
    13·1 answer
  • Classify each number below as a rational number or an irrational number.
    9·1 answer
  • Rewrite in simplest terms: –8(9r – 1) — 9(-8r + 2)
    14·1 answer
  • the probability of serena serving an ace in tennis is 0.15, and the probability that she double faults is 0.25. (note that you c
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!