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
Frodo and Sam are photographers. They take pictures of seniors for high school yearbooks. They charge a standard fee for taking
liubo4ka [24]
(0,15)(1,19)
slope = (19 - 15) / (1 - 0) = 4

y = mx + b
slope(m) = 4
(0,15)...x = 0 and y = 15
sub
15 = 4(0) + b
15 = b

y = 4x + 15....so ur rule is : F(s) = 4s + 15
7 0
4 years ago
What's does nine square equal
Alecsey [184]
To square a number means to multiply it by itself. So 9 squared would be:

9x9

Which is

81

I hope this Helps!
5 0
4 years ago
Read 2 more answers
A coin is tossed 7 times. What is the probability that the number of heads obtained will be between 2 and 7 inclusive? Express y
Marina CMI [18]

Answer:

0.9375

Step-by-step explanation:

Given the following :

Number of coin tosses = 7

Probability that number of heads obtained will be between 2 and 7 inclusive?

x = 2,3,4,5,6,7

Probability (P) = number of required outcomes / total possible outcomes

For a coin toss = 1 Head (H), 1 tail (T)

P(H) = 1 / 2

P(X) = C(7,x) * (1/2)^7

P(X) = C(7, x) / 0.5^-7

P(X) = [C(7,2) + C(7, 3)+ C(7,4) +C(7,5) + C(7,6) +C(7,7)] / 128

P(X) = (21 + 35 + 35 + 21 + 7 + 1) / 128

P(X) = 120 / 128

P(X) = 0.9375

5 0
3 years ago
PLEASE HELP FOR BRAINLIEST ANSWER!!!!!!!!
wel
X = 78 degrees



Explanation:
Using the alternate exterior angle of 33 degrees, the angle to the left of x would also be 33 degrees
Using this we add up 69 and 33 = 102
Then we would do 180-102 since a straight line has a total of 180 degrees
The answer would be 78 degrees
3 0
3 years ago
What is the domain of (49,infinity) in inequality form?
valentinak56 [21]
(a,b)=\{x|a\ \textless \ x\ \textless \ b\}

In our case:

(49,\infty) \Rightarrow 49\ \textless \ x
3 0
3 years ago
Other questions:
  • Marie Hernandez’s checking account balance is $250.65. She then writes check #346 on July 14 in the amount of $21.95 for a bathi
    11·1 answer
  • Given a normal distribution with a mean of 128 and a standard deviation of 15, what percentage of values is with an interval 83
    12·1 answer
  • I ENTERED 22 POINTS!! EXTREAMLY EASY I AM JUST AFRAID TO GET THIS WRONG SO IF YOU COULD TAKE A MINUTE AND HAVE SOME PITY FOR ME
    7·1 answer
  • local Readers Club has a set 36 hardback books and a set of 30 paperback books each set can be divided equally among the club me
    7·2 answers
  • Find the measure of a.90°<br><br><br> b.47°<br><br><br> c.86°<br><br><br> d.37°
    5·2 answers
  • Find the sum of the first 47 terms of the following series, to the nearest integer.
    11·1 answer
  • 50.) Find the value of b so that 330_b= 226_b+5
    12·1 answer
  • Which one is greater 3 with the power of 2 or 2 with the power of 3 tell me why
    6·2 answers
  • What is the y-intercept of f(x)=3/5x<br> a. (1, 0)<br> b. (1, 3/5)<br> c. (0, 0)<br> d. (0, 1)
    7·1 answer
  • Need help ASAP will give more points
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!