Answer:
(-1, -2)
Step-by-step explanation:
Plug (x-1) for y in the first equation:
-4x + 3(x-1) = -2
Simplify:
-4x + 3x - 3 = -2
-x = 1
x = -1
Plug in x=-1 into the second equation:
y = (-1) - 1
y = -2
The mean and standard deviation for the number of boys in the 950 babies are 475 and 15.41, respectively
<h3>How to determine the mean and the standard deviation?</h3>
From the complete question, we have:
P(boy)= 0.5
Sample size = 950
The mean is then calculated as:

This gives

Evaluate

The standard deviation is calculated as:

This gives

Evaluate

Hence, the mean and standard deviation for the number of boys in the 950 babies are 475 and 15.41, respectively
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Answer:
Solution of the equation 2|x +7|-3=5 is :
<u>x1 = - 11 </u>and<u> x2 = - 3</u>
Answer:
the answer is 4
Step-by-step explanation:
32÷8=4 therefore b is 4
Answer: I think 2 I am not sure
Step-by-step explanation: