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
notsponge [240]
2 years ago
13

Which system of equations has the solution (4,−2)?

Mathematics
1 answer:
Marat540 [252]2 years ago
7 0

Answer:

A)

Step-by-step explanation:

To find the answer we must solve each of the systems separately. Starting with the first one:

x + y = 2

2x - y = 10

We must find what x or y is equal to and then replace it in the second equation. I'll go with y as it seems easier:

x + y = 2

y = 2 - x

Now that we found y we replace it in the second equation this way. Be careful with the signs, the minus with change our signs:

2x - (2 - x) = 10

2x - 2 + x = 10

3x = 12

x = 12/3

x = 4

Now that we have x, we replace the variable with its value in one of the equations. Again, for simplicity I'll go with the one that seems easier.

4 + y = 2

y = 2 - 4

y = - 2

You might be interested in
Help is the answer of <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D%20-%5Cfrac%7B4%7D%7B5%7D" id="TexFormula1" title="
cestrela7 [59]

Answer:

negative

Step-by-step explanation:

1/3 - 4/5

Get a common denominator of 15

1/3*5/5 = 5/15

4/5*3/3 = 12/15

5/15 - 12/15

-7/15

4 0
3 years ago
Ingrid spends $120 on car repairs. Which integer represents the amount of money Ingrid must earn in order to create a zero pair?
Julli [10]

Answer: -120

Step-by-step explanation:

this would be the answer because if you take a positive and add it to a negative you get zero if their the additive inverse of the number.

8 0
2 years ago
Read 2 more answers
Look at the picture below to answer the question!! plss
laila [671]

Answer:

x = 15.3°

Step-by-step explanation:

Trig identities:

sin(x)=\dfrac{O}{H} \ \ \ \ \ cos(x)=\dfrac{A}{H} \ \ \ \ \ tan(x)=\dfrac{O}{A}

where

  • x = angle
  • O = side opposite the angle
  • A = side adjacent the angle
  • H = hypotenuse

sin(46)=\dfrac{11}{x}\\\\\implies x=\dfrac{11}{sin(46)}\\\\\implies x=15.3

8 0
2 years ago
I need help pls help me
lutik1710 [3]

First Method:

Round \frac{3}{5} to the closest integer, which is 1.

Round \frac{3}{4} to the closest integer, which is also 1.

So 1 + 1 = 2.

Answer for method 1: 2

Second Method:

\frac{3}{5} + \frac{3}{4} = \frac{3*4}{5*4} + \frac{3*5}{4*5}  = \frac{12}{20}+\frac{15}{20}=\frac{27}{20}

\frac{27}{20} is around 1

Answer for method 2: 1

The closest answer is 1.

3 0
2 years ago
Tennis practice last for 1 hour and 35 minutes
Ghella [55]

Answer:

Where's the rest of this question??

6 0
2 years ago
Other questions:
  • A paddle wheel on a boat is 8 feet in diameter. The fins along the outer edge travel at a speed of 6.7 feet per second. How long
    14·1 answer
  • What is 1/12 (12-v)=1/6(v-6)
    11·1 answer
  • Find the LCM and HCF of the following pairs of integers and verify that LCM × HCF = Product of the two numbers.
    5·1 answer
  • X^2+x=12 solve by quadratic formula
    11·1 answer
  • The equation shown has a missing value. -2(2x-?)+1=17-4x. For what missing value(s), if any, does the equation have exactly one
    12·1 answer
  • Write the expression in factored form: m²-n²
    9·2 answers
  • A jar navy beans and white beans in a ratio of 1:9, and 90 of the beans are navy beans how many beans in total are there in the
    6·2 answers
  • If a van traveled 200 miles in 5 hours how far would it travel in 8 hours
    7·2 answers
  • Y = 95°, find the measure of x
    14·1 answer
  • Tanya is a professional shopper and is always looking for the better deal. She was looking to purchase a new television and foun
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!