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
Mazyrski [523]
3 years ago
10

Oliver works at a book store.He packed 20 identical paperbacks and 9 identical textbooks in a box .The total mass of the book wa

s 44.4 pounds . After he put 1 more textbook and 5 more paperbacks in the box,the total mass of the books was 51 pounds.
Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
7 0
Let x be the mass of the paperbacks and y be the mass of the textbook.

20x + 9y = 44.4 ----------- (1)
25x + 10y = 51 -------------(2)

(1) x 10:
200x + 90y = 444 --------(1a)

(2) x 9:
225x + 90y = 459 --------(2a)

(2a) - (1a):
25x = 15
x = 0.6 -------- sub into (1)

20 (0.6) + 9y = 44.4
12 + 9y = 44.4
9y = 44.4 - 12
9y = 32.4
y = 3.6 

So the paperback's mass is 0.6 pounds and textbook is 3.6 pounds




You might be interested in
The graph of f(x) and g(x) are shown below Which of the following is the graph of (g-f)(x)
anyanavicka [17]

Answer:  (g-f)(x)=-4x

Explanation: According to the graph, line created by function f(x) passes through the points (1,-3) and (0,0) and similarly, line created by the function passes through the points (1,1) and (0,0).

Thus, we can find the equation of the lines with help of formula y-y_1=\frac{y_2-y_1}{x_2-x_1} × (x-x_1)

so, equation of line created by function f(x)

y+3=\frac{3-0}{0-1}×(x-1)

y+3=\frac{3}{-1}×(x-1)

y+3=-3x+3

y=-3x thus function f(x)=-3x

similarly, equation of line created by function g(x)  

y=x thus function g(x)=x

Now, we have to find out, (g-f) (x)= g(x)-f(x)= -3x-x= -4x

                                                                                             

                                                                                                                                                       


5 0
3 years ago
Read 2 more answers
Let v represent the value of a bank acount, in thousands of dollars, t yearsaftertye account is opend at the bank
Liula [17]

Answer:

could you explain it more

Step-by-step explanation:

4 0
2 years ago
Brainliest to correct answer help
shutvik [7]

Answer:

Step-by-step explanation:

its c trust i am a man in my moms bacement

8 0
2 years ago
Read 2 more answers
Solve the problem below.
maxonik [38]

Answer:

Please post one by one answer

6 0
2 years ago
Two friends are collecting stuffed animals. Veronica has 5 more than double the number of stutted
STatiana [176]

v + m = 32 and v = 5 + 2m are the equations that are used  to determine m, the number of stuffed animals Mariposa has

Number of stuffed animals Mariposa has is 9 and number of stuffed animals with Veronica is 23

<h3><u>Solution:</u></h3>

Let "v" be the number of stuffed animals with Veronica

Let "m" be the number of stuffed animals with Mariposa

Given that,

Together, they have 32 stuffed animals

Therefore,

v + m = 32  --------- eqn 1

Veronica has 5 more than double the number of stutted  animals as her friend Mariposa

Therefore,

Number of stuffed animals with Veronica = 5 + 2(number of stuffed animals with Mariposa)

v = 5 + 2m ---------- eqn 2

Thus eqn 1 and eqn 2 can be used to determine m, the number of stuffed animals Mariposa has

Let us solve eqn 1 and eqn 2

Substitute eqn 2 in eqn 1

5 + 2m + m = 32

5 + 3m = 32

3m = 32 - 5

3m = 27

<h3>m = 9</h3>

Substitute m = 9 in eqn 2

v = 5 + 2(9)

v = 5 + 18

<h3>v = 23</h3>

Thus number of stuffed animals Mariposa has is 9 and number of stuffed animals with Veronica is 23

5 0
3 years ago
Other questions:
  • How to simplify the expression 8m/12mn ?? Algebra
    11·1 answer
  • How to do answer 16, 19 and 21? Please show me the solutions. ​
    8·2 answers
  • What is 1/2+1/3+1/6+1/2+1/8+1/4
    6·2 answers
  • a recipe requires 1/3 cup of milk for each 1/4 cup of water how many cups of water are needed for each cup of milk
    12·1 answer
  • What is the slope of the equation 2x + 2y = 8
    15·1 answer
  • 1.
    6·1 answer
  • Find the value of c²+a²<br>​
    14·1 answer
  • HELP IN MATH PLEASE. NEED DONE ASAP
    5·1 answer
  • Which of the following can be written as a rate?
    14·1 answer
  • Using this formula, what is the acceleration of an object with F=7.92 newtons and m=3.6 kilograms? Express your answer to the ne
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!