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
Ivahew [28]
3 years ago
9

Need help with 34,35,36,37

Mathematics
1 answer:
nirvana33 [79]3 years ago
3 0
34. x - 3 = 8x + 4
      -3 - 4 = 8x - x
      -7 = 7x
      -7/7 = x
      -1 = x

y = x - 3
y = -1 - 3
y = -4

solution is (-1,-4)
===================
35. -6 = -x - 2y
      x = -2y + 6

2 + 5x = -2y
2 + 5(-2y + 6) = -2y
2 - 10y + 30 = -2y
32 = -2y + 10y
32 = 8y
32/8 = y
4 = y

2 + 5x = -2y
2 + 5x = -2(4)
2 + 5x = -8
5x = -8 - 2
5x = -10
x = -10/5
x = -2

solution is (-2,4)
==================
36. 4x + 6y = 2000
       x + y = 410
==================
37. 4x + 6y = 2000
       x + y = 410......multiply by -6
----------------------
4x + 6y = 2000
-6x - 6y = - 2460 (result of multiplying by -6)
--------------------add
-2x = - 460
x = -460/-2
x = 230 <=== tickets in advance
 

You might be interested in
Leema's test scores in chemistry are 80, 95, 88, 92, and 100. Find the mean and standard deviation of the data. If necessary, ro
Softa [21]

Answer:

Mean is 91

SD=6.8 to the nearest tenth.

Step-by-step explanation:

Leema's test scores in chemistry are 80, 95, 88, 92, and 100.

We want to find the mean and standard deviation.

The mean is given by:

\bar X=\frac{80+95+88+92+100`}{5}

\bar X=\frac{455`}{5}=91

The standard deviation is given by:

SD=\sqrt{\frac{\sum(x-\bar X)^2}{n} }

SD=\sqrt{\frac{(80-91)^2+(95-91)^2+(88-91)^2+(92-91)^2+(100-91)^2}{5} }

SD=\sqrt{\frac{1140}{25} }

SD=6.8 to the nearest tenth.

8 0
3 years ago
Im asking a question because yes
Paladinen [302]

Answer:

I believe the answer would be A!

Step-by-step explanation:

If you need $10 total, then charging $1 for 4 apples would get you $4, and charging $1.50 for 4 oranges would get you $6, totaling $10!

8 0
3 years ago
NEED HELP ASAP! TYSM!
Ivahew [28]
1.theoretical is not counting the  results of the experimentssince there are an equal number of red and black and red, the probblity (theoretical) of picking a black one is 1/3
experimental=number of outcomes happened/total number of tests4 times black, 4 tests, so 4/4 or 100%=experimental proablity

2. experimental considered previous trials and theoretical did not

3.  theoretical=(1/4) the trials don't influence each other so1/(4*4)=1/16

3 0
3 years ago
Read 2 more answers
What are the solutions of 3x2 + 14x + 16 = 0?
nevsk [136]

Good evening ,

Answer:

x = StartFraction negative 8 Over 3 EndFraction, –2

Step-by-step explanation:

3x² + 14x + 16 = 0

3x² + 6x + 8x + 16 = 0

(3x² + 6x) + (8x + 16) = 0

3x(x+2) + 8(x+2) = 0

(x+2)(3x+8) = 0

x = -2  ,  x = -8/3.

:)

5 0
3 years ago
Read 2 more answers
2/3 divided by 3 halppppopp
Kitty [74]
The answer is 2/9 in lowest terms.

In decimal form its 0.222222
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which measure is equivalent to 3 mi?<br> A. 440<br> B. 15,840<br> C. 63,360<br> D. 190,080
    13·2 answers
  • Write 0.96 as fraction in simplest form
    9·1 answer
  • HELP!!!!<br><br><br> chose the faction greater than 9/16 A. 8/15 B.6/14 c. 6/11 d.7/12
    6·2 answers
  • HELP ME WITH PRECALC
    12·1 answer
  • Based on the graph the car requires
    10·1 answer
  • I need help!!!!!!!!!
    7·1 answer
  • Jordan got new money bank
    8·2 answers
  • 3rd 9-Week Exam
    5·1 answer
  • Find the volume of the cone.
    10·1 answer
  • Sasaasaasasaassaaaassjsjsjhdhhsjwia
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!