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
Semmy [17]
2 years ago
12

David and Eric each shot 6 arrows at the target shown. David shot 4 arrows into A and 2 into B. His score was 18 points. Eric sh

ot 3 into A and 3 into B. His score was 21 points. How many points were given in an arrow in B?
Mathematics
1 answer:
liq [111]2 years ago
3 0
Lets write an equation for each guy's shots and score:
4A + 2B = 18
3A + 3B = 21
To solve we multiply the first equation by -3 and the second by 2:
-12A - 6B = -54
  6A + 6B = 42
--------------------
-12A + 0 = -12
A = 1
to find B we substitute in the first equation:
<span>4A + 2B = 18
</span><span>4(1) + 2B = 18
</span><span>4 + 2B = 18
</span>2B = 14
B = 7
therefore there were given 7 points in an arrow in B
You might be interested in
Hi What is the area of the object above?
WINSTONCH [101]
Dieikenfjdj dodkfkdkd dkdkfkdndd disk djdkd
7 0
2 years ago
Help!!! The one marked red is wrong
kakasveta [241]

Answer:

4x+5

Step-by-step explanation:

5 0
2 years ago
In the figure, a∥e , m∥n , and m∠2 = 112°.
MatroZZZ [7]

Answer

Find out the  m∠6  .

To prove

As given

a∥e , m∥n , and m∠2 = 112°.

As  m∥n

a is the transversal (A line that cuts across two or more (usually parallel) lines is called transverasl.)

Thus

∠ 2 = ∠3 ( Corresponding angle property )

∠3 = 112°

Also

a∥e and m is transversal .

∠ 3 = ∠6 = 112 ° ( Corresponding angle property )

Therefore

∠6 = 112°

3 0
3 years ago
Read 2 more answers
What is 32 = 3.2c so what is the letter c
Elena-2011 [213]
Whatever you do to one side, you have to do to the other.
32=3.2c
We need c by itself, so we need to divide both sides by 3.2.
32/3.2=10
C=10
Let’s make sure c equals ten by putting in ten for c.
3.2(10)=32
32=32
C=10
4 0
2 years ago
Read 2 more answers
What is the solution to this equation ? x + 12 +3x =18 - 2x
olasank [31]

First, you combine like terms: x+3x=4x: 12+4x=18-2x

Second, you add the 2x to each side (inverse operation): 12+6x=18

Third, you subtract 12 from 18 to cancel out the 12 (inverse operation): 6x=6

Fourth, you divide each side by 6 to find the value of x

The answer is x=1

3 0
3 years ago
Read 2 more answers
Other questions:
  • 25 points America explain
    11·1 answer
  • PLEASE HELP I WILL GIVE BRAINLIEST
    12·1 answer
  • The table below shows the ticket rates for whale watching trips offered by Beluga Fun Tours:
    11·1 answer
  • Jika x1 dan x2 merupakan akar akar persamaan x2+5x-2=0, maka (x1+2x2)(x2+2x1)=
    8·1 answer
  • Solve the system of equations by substitution.<br><br> -5x + y = 3<br><br> 7.5x - 1.5y = 3
    8·1 answer
  • Which kind of triangle is shown
    10·2 answers
  • A members only speaker series allows people to join for $17 and then pay $1 for every event attended. What is the maximum number
    12·1 answer
  • Bác lan thu hoạch được 10 tạ gạo nếp và 1,5 tấn gạo tẻ. hỏi bác lan thu được tất cả bao nhiêu tạ gạo
    6·1 answer
  • What is 1.70 times 8.5
    9·1 answer
  • If a 156 pound 12yo falls 10 feet and lands on their head, will they be knocked out?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!