If a rectangle's length is 7 more than 4 times the width and the perimeter is 54 what are the dimensions of the rectangle?
1 answer:
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Answer:
(0,-9)
Step-by-step explanation:
Well first we need to solve the rowing eqation by combining like terms and separating x.
So let’s do -3x
-9 = x -9
+9
x = 0.
So if x is 0 we can plug that in one of the equations.
y = 4(0) - 9
y = -9
So the solution where the 2 lines meet is at (0,-9)
For more proof look at the image below.
Answer:
Step-by-step explanation:
Substitute the value (p(11)) into the function and evaluate by solving. Do not forget to follow the order of operations. The order of operations is the steps one must do operations in an equation in order to get a valid result, they are the following,
1. Parenthesis
2.Exponent/Radicals
3.Multiplication/Division
4.Addition/Subtraction
Substitute,
Simplify,
Answer:
The standard error of the mean is 1.91 pounds
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation
, the sample means with size n can be approximated to a normal distribution with mean
and standard deviation, which is also called standard error of the mean, is
In this problem we have that:
So
The standard error of the mean is 1.91 pounds