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
Evgen [1.6K]
2 years ago
14

How to work this out ?

Mathematics
1 answer:
Free_Kalibri [48]2 years ago
6 0

Answer:

The solution is (-3, -2).

Step-by-step explanation:

Please note that if you simply add these 2 equations together, 9x - 9x = 0, and you are then left with -5y = 10.  Thus, y = -2.  Subbing -2 for y in the first equation, we get 9x - 8(-2) = -11, or 9x + 16 = -11.

Subtracting 16 from both sides, we get 9x = -27, so that x = -3.

The solution is (-3, -2).


You might be interested in
Does anyone know the answer to the question below
sertanlavr [38]

Answer:

x=7

Step-by-step explanation:

CD=DA

5X-6=3X+8

5X-3X=8+6

2X=14

X=7

8 0
2 years ago
Part C: 18(182 + 82)<br> What’s the answer
Kipish [7]

Answer:

4,752

Step-by-step explanation:

18(182+82)

18(264)

4,752

6 0
3 years ago
Read 2 more answers
PLEASE HELP PLEASE HELP PLEASEEEE
Delvig [45]

Answer:

27. C

28. D

Step-by-step explanation:

The average of all grades in his fencing class, including the upcoming one, (all grades summed up divided by the amount of grades) must be equal to 86 (percent), hence C is the right answer for 27.

Solving this equation gives:

\frac{75+88+62+100+x}{5} = 86\\325 + x = 86 \cdot 5\\x = 430 - 325 = 105

So D is the right answer for 28.

5 0
3 years ago
Read 2 more answers
A. 8pi<br><br> B. pi<br><br> C. 2pi<br><br> D. 4pi
mestny [16]

Answer: Option C

AC = 2\pi

Step-by-step explanation:

The arc length is calculated as

L = \theta * R

Then

AC = \theta * R

We know that

BC = 24\ ft

If BC is the diameter of the circumference then the radius R is:

R = \frac{BC}{2}

R = \frac{24}{2}

R = 12\ ft

Now we convert the anglo from degrees to radians\theta= 30\° * \frac{\pi}{180\°}\\\\\theta=\frac{1}{6}\pi

Finally

AC = \frac{1}{6}\pi * 12

AC = 2\pi

7 0
3 years ago
Read 2 more answers
Someone help pls lol​
Minchanka [31]

Answer:

I dont under stand sorry :(

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Which of these represents six miles less than twice the original distance?
    13·2 answers
  • AC is the perpendicular bisector of ZB. What can you predict about AZ and AB
    8·2 answers
  • A cyclist rode 3.75 miles in 0.3 hours how fast was she going in Miles per hour
    6·1 answer
  • What is the final transformation in the sequence of
    14·2 answers
  • What is the slope of a line that passes through (1,77) and (3,40)
    14·1 answer
  • I need help with all the questions plzzz show work and I’ll give u brainliest plzzzzzZzZzZz i need help plzZZz
    7·1 answer
  • What is the area of a regular pentagon with a side of 20 inches? can you explain?
    6·1 answer
  • Simplify the linear expression below:<br> (-9x + 7) + (-6x - 13)
    10·1 answer
  • Here is a list of numbers.
    5·1 answer
  • 1.<br> If y = 3, then x = ? whole number
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!