Answer:
x = -3, y = -4
(-3, -4)
Step-by-step explanation:
solve each equation for y (the first equation is already solved for y, so just do the second equation)
-x -y =7
<u>+x +x</u>
-y = x + 7 eliminate the negative by switching all signs
y = -x - 7
now that both equations equal y, you can set them equal to each other:
-x - 7 = 3x + 5
solve for x
-x - 7 = 3x + 5 move the variable to one side of the equation
<u>+x +x </u>
-7 = 4x + 5 move the constant to the other side of the equation
<u>-5 -5</u>
-12 = 4x single out x by dividing the whole thing by 4
<u>÷4 ÷4</u>
-3 = x
now substitute -3 for x in one of the original equations (it doesn't matter which equation)
y = 3(-3) +5 solve
y = -9 +5
y = -4
have a wonderful day! :)
Answer:
10 is the answer please make me an Brilliant
Y=3
..............................
Answer:
Option A) The null hypothesis should not be rejected.
Step-by-step explanation:
We are given the following in the question:
A one sample test for a proportion is being performed.
Critical Value = 2.33
Test statistic = 1.37
Since the critical value is positive and the calculated test statistic is positive, thus it is a right tailed test for a proportion.
The null and alternate hypothesis can be written as:
Since the calculated test statistic is less than the critical value, we fail to reject the null hypothesis.
We accept the null hypothesis.
Thus, the correct answer is
Option A) The null hypothesis should not be rejected.
The answer is b. She drank three and since the chances are 1/3 then at least one of those three were water
