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
inn [45]
3 years ago
10

What is x + y = 12 if x = 2y

Mathematics
2 answers:
Crazy boy [7]3 years ago
5 0
I believe the answer is 4.
Ahat [919]3 years ago
4 0

Answer:

x=8

y =4

Step-by-step explanation:

x + y = 12 if x = 2y

Replace x with 2y in the first equation

2y+y = 12

Combine like terms

3y =12

Divide by 3

3y/3 =12/3

y = 4

Now we can find x

x=2y

x=2(4)

x = 8

You might be interested in
I will give brainliest for correct answer!
zavuch27 [327]

Answer:

you forgot the question

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
PLEASE ANSWER ASAP I NEED HELP. <br> IT WILL BE MUCH APPRECIATED<br> find the product (x+4)(x-3)
iragen [17]

Answer:

Work shown below!

Step-by-step explanation:

(x + 4)(x - 3) = x^{2} -3x+4x-12=x^{2} +x-12

8 0
2 years ago
Read 2 more answers
Type the slope-intercept equation
natulia [17]

Answer:

y= -2x +1

Step-by-step explanation:

<u>slope- intercept form</u><u>:</u>

y= mx +c, where m us the gradient and c is the y-intercept.

Let's find the value of m first using the gradient formula.

Gradient= \frac{y1 - y2}{x1 - x2}

m =  \frac{ - 3 - 3}{2 - ( - 1)}  \\ m =  \frac{ - 6}{2 + 1}  \\ m =  \frac{ - 6}{3}  \\ m =  - 2

y= -2x +c

To find the value of c, substitute a pair of coordinates.

When x= -1, y=3,

3= -2(-1) +c

3= 2 +c

c= 3 -2

c= 1

Thus the equation of the line is y= -2x +1.

4 0
3 years ago
If the cost of a dress is $75.00 and
11Alexandr11 [23.1K]

Answer:

80%

Step-by-step explanation:

Original price =$75.00

Sale price =$60.00

The percentage discount can be calculated by dividing the sale price by the original price multiplied by 100%.

So % discount = $60.00/$75.00 x 100%

0.8 x 100%

80%

Janelle got the dress on a discount of 80%.

This is so because she got the dress for a price less than the original price

6 0
2 years ago
What is the value of ▲ in the equation shown?<br><br> 8 x 4 = ( ▲ x 7) - (▲ x 3)<br><br> = _____
aleksandrvk [35]
The answer is 8 because
 8 times 4 = 32
 8 times 7 =56
 8 times 3 =24
 56 minus 24 = 32
5 0
3 years ago
Read 2 more answers
Other questions:
  • Ben buys a car for $50,000. The value of the car decreases at a rate of 4% per year. How much will the car be worth in 3 years?
    9·1 answer
  • 0.92 is 1/10 of what
    12·1 answer
  • Question a) Compare the Variability of Expenditure of Families in Two Towns given as follows: Number of families Expenditure (Ru
    8·1 answer
  • First answer gets brainalist On a scale model of a building, 14 inch represents 38 foot. What length on the model represents 1 f
    7·1 answer
  • Evaluate the following:<br>(-8)2​
    13·2 answers
  • Find the circumference
    11·1 answer
  • A plane flies from Houston to New York City in 4 hours. The distance it travelled was 1627 miles. What was the average speed of
    15·1 answer
  • PLEASE I NEED HELP!!!!
    13·1 answer
  • 7th grade math help please and thank you
    10·2 answers
  • Welcome to Gboard clipboard, any text you copy will be saved here.​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!