Answer:
n=30
Step-by-step explanation:
4 15
------ = --------
8 n
using cross products
4n = 8*15
4n = 120
divide by 4
4n/4 =120/4
n = 30
Answer:
6, -4
Step-by-step explanation:
Not sure if correct but that's what I got
The arithmetic formula is expressed as an = a1 + d *(n-1)where n is an integer. Substituting from the given a1 = -12 and a27 = 66, 66 = -12 + d *(27-1). hence , d is equal to 3. a42 thus using the formula is equal to 111. The final answer to this problem is 111.
Answer:
136 cm²
Step-by-step explanation:
Area of the composite figure = area of the triangle + area of the rectangle
= ½*bh + L*W
Where,
b = 16 - 8 = 8 cm
h = 13 - 7 = 6 cm
L = 16 cm
W = 7 cm
Plug in the values into the equation
Area of the composite figure = ½*8*6 + 16*7
= 24 + 112
= 136 cm²
Answer:
Standard error
Step-by-step explanation:
Standard error: In statistics, the term standard error is also denoted as SE, and is reffered to as the estimate of a particular parameter.
It is defined as the standard deviation in statistics related to its sampling distribution or else the the standard deviation's estimate.
Therefore, if a particular parameter or statistic is considered as a mean then it would be denoted as the standard error of that mean.
The standard error of an estimate may also be defined as the square root of the estimated error variance √
of the quantity,
=√
In the given question, the appropriate answer would be standard error.
