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
Nesterboy [21]
4 years ago
9

Solve the system.

Mathematics
1 answer:
patriot [66]4 years ago
5 0

Answer:

D.(2,-1,-1)

Step-by-step explanation:

-a+4b+2c=-8

3a+b-4c=9

b = -1

Substitute b=-1 into the other equations

-a -4 +2c = -8

3a -1 -4c =9

Multiply the first equation by 2 so we can eliminate c

-2a -8 +4c = -16

Add this to the second equation

-2a -8 +4c = -16

3a -1 -4c =9

-----------------

a -9 = -7

Add 9 to each side

a-9+9 = -7+9

a =2

b=-1

Now we need to find c

-a +4b +2c = -8

-2 -4 +2c = -8

-6+2c = -8

Add 6 to each side

-6+6 +2c = -8+6

2c = -2

Divide by 2

2c/2 = -2/2

c=-1

(2,-1,-1)

You might be interested in
Use the trend line to predict what the value of variable N will be when variable M equals 50.
ahrayia [7]

Answer:

N = 10

Step-by-step explanation:

Normally the coordinate system goes:

x axis (horizontal)

y axis (vertical)

Here, we have:

Horizontal axis as "M", and

Vertical axis as "N"

We want to know what N will be when M equals 50.

So, we look at the x-axis and go to M equals 50.

Then we move up until the "trend line". The intersection.

If we move directly left to vertical axis (N variable), we see that it is at the point:

N = 10

So,

When M = 50, N = 10

8 0
4 years ago
Help pleaseeeeeeee it’s a free 10 points
Svetlanka [38]

Answer:

63.2

Step-by-step explanation:

90+26.6=116.8

180-116.8=63.2

8 0
3 years ago
Read 2 more answers
A spice maker uses 700 crocus flowers to make 5 grams of the spice saffron.
Aleks04 [339]
The rate is 5 grams per every 700 crocus flowers hope this helped u can also rearrange it and say for every 700 crocus flowers there’s 5 grams hope this fixed the problem pls award brainliest :)
7 0
3 years ago
What is the value of X in the equation 8X - 2y=48,when y=4
Travka [436]

Answer:

X=7

Step-by-step explanation:

8x-2y=48

8x-2(4)=48

8x-8=48

8(7)-8=48

56-8=48

3 0
3 years ago
Read 2 more answers
Let g(x, y) = cos(x + 5y). (a) Evaluate g(10, −2). g(10, −2) = (b) Find the domain of g. −1 ≤ x ≤ 1, − 1 5 ≤ y ≤ 1 5 −5 ≤ x ≤ 5,
RoseWind [281]

Answer:

since Cos(z) is a function defined for all z\in \mathbb{R}, then there is not restriction for x+5y, thus, the domain of g(x,y) is \mathbb{R}^2 and in interval notation is (-\infty,\infty)\times(-\infty,\infty)

Since Cos(x+5y)\in\mathbb{R} then the range of g(x,y) is the interval [-1,1].

4 0
4 years ago
Other questions:
  • A grocery store ordered 491 bottles of regular soda and 117 bottles of diet soda. To the nearest ten, what is the total number o
    8·2 answers
  • Use the equation n2 + n = 56 to determine which figure has 56 blocks.
    12·1 answer
  • Answer the math question please
    15·1 answer
  • I need help and show steps
    13·1 answer
  • Write an equation of the line that passes through the point (4, 14) and is parallel to the line whose equation is y=3x-7.
    15·2 answers
  • Hello please help i’ll give brainliest
    8·2 answers
  • What is the volume of this figure? *<br> 10 m<br> 2 m<br> 4 m
    14·2 answers
  • Help i’ll give brainliest
    12·2 answers
  • Linear functions M and P are shown below.
    5·1 answer
  • 4. Which pair of angles are same-side interior angles? (1 point)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!