Answer:
3.
Step-by-step explanation:
number 1 equals 8 1/5
number 2 equals 5
number 3 equals 9 1/3
Answer:
4x²y² + 20xy² + 25y²
Step-by-step explanation:
(a + b)² = a² + 2ab + b²
a = 2xy ; b = 5y
(2xy +5y)² = (2xy)² + 2*(2xy) * (5y) +(5y)²
= 2²x²y² + 2* 2* 5 * x*y*y + 5²*y²
=4x²y² + 20xy² + 25y²
Answer:
Step-by-step explanation:
Information that we know about the square:
side length: which can asol be expressed as:
we can use this information to calculate the area by the formula for the area of a square:
we subtitute the side length:
the square root and the squared exponent cancel each other out (because they are opposite operations) and since this is an area it must have squared units:
The exact value of the area of the square is
Answer:
The critical <em>z</em>-value for a confidence level of 85% is ±1.439.
Step-by-step explanation:
The critical value of a distribution is the value beyond which the rejection region lies.
For a confidence interval the rejection region lies beyond two values, the positive and the negative critical value.
The confidence level is, 85%.
Compute the critical value of <em>z</em> for 85% confidence level as follows:
*Use a <em>z</em>-table for the value.
Thus, the critical <em>z</em>-value for a confidence level of 85% is ±1.439.
5 or 1/2 since it's numerator and denominator are integers