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
vodka [1.7K]
4 years ago
10

Simultaneous equations 2x+3y=13 4x-y=-2

Mathematics
1 answer:
Rufina [12.5K]4 years ago
3 0

Answer:

(0.5, 4 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 13 → (1)

4x - y = - 2 → (2)

Multiplying (2) by 3 and adding to (1) will eliminate the term in y

12x - 3y = - 6 → (3)

Add (1) and (3) term by term to eliminate y

14x = 7 ( divide both sides by 14 )

x = 0.5

Substitute x = 0.5 into either of the 2 equations and evaluate for y

Substituting into (1)

2(0.5) + 3y = 13

1 + 3y = 13 ( subtract 1 from both sides )

3y = 12 ( divide both sides by 3 )

y = 4

Solution is (0.5, 4 )

You might be interested in
Select all possible values for x that solve the equation x^2=800
Gemiola [76]

x^2 = 800. Take the square root of each side.

x = √(800) and -√(800)

6 0
3 years ago
У-3
alisha [4.7K]

Answer:

the answer will be verified by an expert. Until then, talk to a tutor.

5 0
2 years ago
A cashier earns $7 an hour. If x is the number of hours worked, which function represents the cashier’s earnings?
jenyasd209 [6]
You can pick a symbol, maybe m or z to be the symbol.
7 0
3 years ago
Read 2 more answers
Leader is a stockbroker 14% commission each week last week she said $7200 worth of stocks how much did she make last week interm
Feliz [49]

Answer:

$1,008 weekly,  $52,416 annually

Step-by-step explanation:

14% of $7200 is 7200 multiplied by .14 (% is decimal multiplied by 100)

.14 of 7200 = 1008

Since you specified the year, I'm going to assume that you need the annual salary based on the weekly salary that she gets from commissions.

$1008 per week, 52 weeks in a year

52 * 1008 = $52416, her commission in 2011

4 0
3 years ago
PLS HELP THIS IS HARD ANYONE PLS
Valentin [98]

This question is very oddly worded.  The domain is the set of x-values, but this is a set of (x,y) ordered pairs.

I'm reading this question as "Here's a function, { (1,5), (2,1), (-1,-7) }.  If this is reflected over the x-axis, what's the range?"

Assuming that is the question that is meant to be asked, reflecting a function over the x-axis will just change the signs of the y-values.

    (1,5) -> (1,–5)

    (2,1) -> (2,–1)

    (-1,-7) -> (-1,+7)

I'd pick the third option.

6 0
3 years ago
Other questions:
  • Francisco had an AGI of $65,000. He had $1200 in medical expenses, paid $18,000 in rent, and drove his motorcycle to work. Which
    10·2 answers
  • What is 42 divided by 1020
    7·1 answer
  • Multiply: –c2(3c – 2)
    12·2 answers
  • Evaluate the expression when x = 1/2 and y = -5<br><br> 11x - 8 ( x - y )
    11·1 answer
  • This is just a random question don't answer im testing something out
    13·1 answer
  • Write each polynomial in standard form and state the leading coefficient.
    9·1 answer
  • Susan is making 8 casseroles. She uses 9 cans of beans. Each can is 16 oz. If she divides the beans equally among casseroles? Sh
    12·1 answer
  • The Hu family goes out for lunch, and the price of the meal is $52. The sales tax on the meal is 6%, and the family also leaves
    13·1 answer
  • What is the value of x in the equation 2<br> (4x+)-(3x+2)- 8(9-x) = x
    11·1 answer
  • I kinda need help! No links No files :)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!