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
sergejj [24]
3 years ago
7

• Number of psychology textbooks sold: The number is not correct

Mathematics
1 answer:
diamong [38]3 years ago
8 0

Answer:

209 biology books and 125 psychology books were sold.

Step-by-step explanation:

x = biology books y = psychology books

334 = x + y

x = y + 84

x - y = 84

y = x - 84

Using these systems of equations, we can see that (209,125) is the only possible answer. Elimination, substitution, or guess and check are all viable methods to solve this problem. I can explain further if needed! :)

You might be interested in
Plz helpppp I don’t GET THIS
Liono4ka [1.6K]
First you have to find 1/3 of the marbles. That means in the twelve marvels she has, there are three even groups. Divide twelve by three and you get four. So if each group is four, it is simple from here on out. If she started out with twelve and she lost 1/3 of them(4) it would be 12-4. You know this because lost is another for for subtract. 12-4=8. She has 8 marbles left.
6 0
3 years ago
Read 2 more answers
For f (x) = 4x +1 and g(x) = x2 - 5, find (1-3)(x).
tamaranim1 [39]
F(x)= 4(1-3)+1
4(-2)+1
-8+1
-7


G(x)=(1-3)^2-5
-2^2-5
4-5
-1
3 0
3 years ago
the lenght of a rectangle is x+5 and it,s breath is x-5the areas of a rectangle is is x raise to the power of 2-x-15 is it true
sukhopar [10]

Answer:

False

Step-by-step explanation:

the area (A) of a rectangle is calculated as

A = length × breadth

  = (x + 5)(x - 5) ← expand factors using FOIL

  = x² - 5x + 5x - 25

 = x² - 25 ≠ x² - x - 15

4 0
2 years ago
Ordinary quarters and a fake quarter with two heads are placed in a hat. One-quarter is selected at random and tossed twice. If
motikmotik
How many quarters of each are there?
4 0
3 years ago
Help me pleasee I need to turn it in tonightt
AveGali [126]
Student 1 and student 3 are equivalent
7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the midpoint of the segment shown below?
    11·2 answers
  • Plz help me fill in these blanks
    12·1 answer
  • Jerry solved the system of equations.
    10·2 answers
  • Determine the slope and y-intercept from the following equation<br><br> y = (32) x + 3
    9·2 answers
  • Nina spent $75.00 on music in September. She spent $96.00 on music in
    6·2 answers
  • Can you help me please?
    8·2 answers
  • Volume (look at the picture)
    7·1 answer
  • A.) (3, -8)<br> B.) (-4, -5)<br> C.) (6, -15)<br> D.) (3, -4)<br> ???
    8·1 answer
  • Need help with simple ratio will make brainliest
    15·1 answer
  • Can anyone help me with this answer.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!