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
tester [92]
4 years ago
9

PLEASE HELP !!!!!!!!Solve the system of equations using the linear combination method.

Mathematics
1 answer:
vfiekz [6]4 years ago
6 0

Answer:

The solution would be (5, -2)

Step-by-step explanation:

To use this method, start by multiplying the second equation by -1. Then add the two equations together.

9x + 5y = 35

-2x - 5y = 0

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

7x = 35

x = 5

Now that we have the value of x, use it to solve either equation for y.

2x + 5y = 0

2(5) + 5y = 0

10 + 5y = 0

5y = -10

y = -2

You might be interested in
I need answers to this question plz
Elan Coil [88]

Answer:

u

Step-by-step explanation:

8

4 0
3 years ago
PLEASE HELP!!
erik [133]
2.=c.\\\\2\sin4x\cos4x=2\sin(2\cdot4x)=2\sin8x\\\\Used:\\\sin2\alpha=2\sin\alpha\cos\alpha

1.=b.\\\\\csc x-\sin x=\dfrac{1}{\sin x}-\dfrac{\sin^2x}{\sin x}=\dfrac{1-\sin^2x}{\sin x}=\dfrac{\cos^2x}{\sin x}\\\\=\dfrac{\cos x\cos x}{\sin x}=\cos x\cdot\dfrac{\cos x}{\sin x}=\cos x\cot x\\\\Used:\\\csc x=\dfrac{1}{\sin x}\\\\\sin^2x+\cos^2x=1\to\cos^2x=1-\sin^2x\\\\\cot x=\dfrac{\cos x}{\sin x}

3.=a.\\\\\dfrac{\sin x-1}{\sin x+1}=\dfrac{\sin x-1}{\sin x+1}\cdot\dfrac{\sin x+1}{\sin x+1}=\dfrac{\sin^2x-1^2}{(\sin x+1)^2}=\dfrac{\sin^2x-1}{(\sin x+1)^2}\\\\=\dfrac{-(1-\sin^2x)}{(\sin x+1)^2}=\dfrac{-\cos^2x}{(\sin x+1)^2}\\\\Used:\\(a-b)(a+b)=a^2-b^2\\\\\sin^2x+\cos^2x=1\to \cos^2x=1-\sin^2x
8 0
3 years ago
Jessica is making a cake. The recipe calls for 2 3/4 cups of flour. She only has a measuring cup that holds 1/4 cup. Explain how
guapka [62]

Answer: Jessica can use her measuring cup 11 times.

(hope this helps!)

3 0
3 years ago
Last 2 questions please help
Jlenok [28]
4.
Minimum: 20
First Quartile: 44
Median: 51
Third Quartile: 57
Maximum: 86

Ascending order : 20 41 44 44 49 53 55 57 80 86
6 0
2 years ago
Your boss hands you a memo with a summary of the monthly data.
lisov135 [29]

Functions are used to represent tables and equations

  • The function that represents the number of imports is f(x) = 2x
  • The function that represents the number of exports is f(x) = 2 + x

<h3>How to determine the import function</h3>

From the table, we can see that the values of the import is twice the number of months

This is represented as:

y = 2x

Rewrite as a function

f(x) = 2x

Hence, the function that represents the number of imports is f(x) = 2x

<h3>How to determine the export function</h3>

From the table, we can see that the values of the export is two more than the number of months

This is represented as:

y = 2 + x

Rewrite as a function

f(x) = 2 + x

Hence, the function that represents the number of exports is f(x) = 2 + x

Read more about linear functions at:

brainly.com/question/15602982

7 0
3 years ago
Other questions:
  • Using the z table, find the critical value for a=0.024 in a left tailed test
    14·1 answer
  • Bruce is going to call one person from his contacts at random. He has 25 total contacts. 20 of those are from his neighborhood.
    8·2 answers
  • Which equation in point slope form contains the point (2,3) and has slope 2
    12·1 answer
  • A study was conducted to find out if a new exercise program was more effective than an old one at improving cardiovascular fitne
    5·1 answer
  • Hich expression is equivalent to 21x + 9 - 3x
    11·1 answer
  • 5 over 2z-8=-3 If anybody knows. :D
    10·1 answer
  • $0.30 per ounce, how much would 2 lb cost?
    12·1 answer
  • does anyone else love billie eilish as much as i do? her voice is like an angel sent from heaven frfr
    5·2 answers
  • Evaluate using order of operations.
    10·1 answer
  • A bag contains red and blue marbles, such that the probability of drawing a blue marble is 1/8 An experiment consists of drawing
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!