Answer:x=1 y=2
Step-by-step explanation:
you add and get 8x=8 x=1 so plugging in one you get 5+2y=9 so 4=2y so y=2
The valid prediction for the mean of the population possible using these samples is C. Yes, the variation of the sample means is small
<h3>What is a sample mean?</h3>
It should be noted that a sample mean is an average of a set of data . Also, the sample mean can be used to calculate the standard deviation, central tendency, and the variance of a data set.
The sample mean can be applied to a variety of uses, including calculating population averages.
Here, the sample variance is a measure of the degree to which the numbers in a list are spread out. Here, the numbers given are close to each other.
If the numbers in a list are all close to the expected values, the variance will be small and if they are far away, the variance will be large.
Therefore, the correct option is C.
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Answer:
21
ctto JBarnum
Step-by-step explanation:
P+11=(1/2)(P-13)^2
P+11=(1/2)(P^2-26p+169)
2(P+11)=(1/2)(2)(P^2-26p+169)
2P+22=P^2-26p+169
0=P^2-28p+147 ( -7 and -21)
(P-7)(P-21)=0
P=7,21 (cant be 7 as 13 years from 7 is negative so peter is 21)
checking:
21+11=32
32=(1/2)(21-13)^2
32=(1/2)(8)^2
32=(1/2)64
32=32
correct
If you are looking for the fraction of total income spent, the answer would be 7/8.
3/8, 2/5, 1/10
Make them similar fractions, use LCD (in this case, 40)
They become
15/40, 16/40, 4/40
Add
15/40 + 16/40 + 4/40
= 35/40, or, simplified, 7/8
♧
Answer:
Function 1 has a greater slope and greater<em> y</em>-intercept than Function 2.
Step-by-step explanation:
Function 1
Slope: 1/3
<em>y</em>-intercept: 2
Function 2
Slope: -2/4
<em>y</em>-intercept: -2
