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
sleet_krkn [62]
3 years ago
8

What is the solution of the system? Use elimination.

Mathematics
2 answers:
REY [17]3 years ago
5 0
Good morning Stacy

3x - 4y = -24
x + y = -1
We need to solve x + y = -1 for x
x = -1 - y( I transferred the y in the right side)
Substitute -y -1 for x in 3x -4y = -24
3x - 4y = -24
3(-y-1) -4y = -24
You just need to simplify
-7y -3 = -24
-7y = -24 + 3
-7y = -21
y= -21/-7
y= 3
Now substitute 3 for y in x= -y -1
x= -y-1
x = -3 -1
x= -4

Answer : x = -4 and y=3
The correct option is D

I hope that's help and if you have questions about my answer please ask. Thx

denis-greek [22]3 years ago
4 0
Eliminate y's
multiply second equaiton by 4
4x+4y=-4

add to first equation

3x-4y=-24
<u>4x+4y=-4 +</u>
7x+0y=-28

7x=-28
divide both sides by 7
x=-4
sub back

x+y=-1
-4+y=-1
add 4 to both sides
y=3

(x,y)
(-4,3)
D is answer
You might be interested in
What is the correct answer for this question
ioda

Answer:

2 option I think, if I'm wrong so sorry ;(

Step-by-step explanation:

5 0
2 years ago
Maria solved an equation as shown below. 3 (x + 6) = 5 (x minus 4). 3 x + 18 = 5 x minus 20. 38 = 2 x. 19 = x.
KonstantinChe [14]

Answer:

i think it 5

Step-by-step explanation:

8 0
3 years ago
Convert to standard form y=2(x+3)(x-6)
Nataly_w [17]

Answer:

the answer is 2x²-6x-36

3 0
3 years ago
A new superhero movie has its first showing and there are 155 people in line to see it. If the ratio of kids to adults waiting t
lidiya [134]

The number of adults waiting to see the new superhero movie is 62.

<h3>How many adults are waiting in line?</h3>

Ratio expresses the relationship between two or more numbers. Ratio is used to compare two or more numbers. It shows the number of times that one value is contained in another value.

Looking at the ratio given in this question, we know that there are 1 1/2 (3 /2) more children than adults on the line to watch the new superhero movie.

Number of adults waiting to see the movie = (ratio that represents adults / sum of ratio) x total number of people wafting in line

Sum of ratios = 2 + 3 = 5

(2/5) x 155 = 62 people

To learn more about ratios, please check: brainly.com/question/25927869

#SPJ1

3 0
1 year ago
Archaeopteryx is an extinct beast having feathers like a bird but teeth and a long bony tail like a reptile. Only six fossil spe
Vadim26 [7]

Answer:

In this scenario, we will use the <u>femur or the thigh</u> bone length as the explanatory variable.

Step-by-step explanation:

Dependent variables are those variables that are under study, i.e. they are being observed for any changes when the other variables in the model are changed.

The dependent variables are also known as response variables.

Independent variables are the variables that are being altered to see a proportionate change in the dependent variable. In a regression model there can be one or more than one independent variables.

The independent variables are also known as the explanatory variables.

Scientifically it is believed that the length of arm and legs are related and basically grow at the same time.

So, in this case the explanatory variable can either of the two bone lengths.

Thus, the complete statement is:

"In this scenario, we will use the <u>femur or the thigh</u> bone length as the explanatory variable."

8 0
3 years ago
Other questions:
  • If the measure of Angle AXC=8x-7 and Angle AXB = 3x+10 find the measure of ANGLE AXC
    10·2 answers
  • The circumference of a circular rug is 24.8 meters. What is the area of the rug? Use 3.1 for pi
    13·1 answer
  • Find sin 0. <br> 15<br> 8<br> 0<br> please help! very important
    8·1 answer
  • Can someone please help me on this question
    14·2 answers
  • Solve the equation. 19 + n = 30 19+n=3019, plus, n, equals, 30 n = n=
    8·1 answer
  • Solve the equation:<br> 5*4 / 10 + 4 =
    9·2 answers
  • Can you help me? I need help
    6·2 answers
  • A tree casts a shadow of 28 m. The elevation of the sun is 49º. How tall is<br> the tree?
    10·1 answer
  • Write a function, (), which has a maximum and a y-intercept of −3.
    5·1 answer
  • The perimeter of a triangle is 16 squar root 7 feet if two of the sides measure 343 square root feet amd 175 square root fins th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!