The error she made is Emi evaluated (46-78)² as - (32)² is wrong.
<h3>What is variance?</h3>
Variance is calculated as the average of squared differences of the data observations from the mean.
Given data: 87, 46, 90, 78, and 89.
Here, the first Emi find the difference of 89 - 78 correctly.
Now, Emi division is also correct.
Now, Emi evaluated (46 - 78)^2 as -(32)^2 is wrong.
(46-78)² = (-32)²
Here she used the negative sign outside.
Hence, Emi evaluated (46 - 78)^2 as -(32)^2 is wrong.
Learn more about this concept here:
brainly.com/question/9899363
#SPJ1
Answer:
We form rectangular triangle. Ninghty degrees angle.
Step-by-step explanation:
1) the top of the billboard is
7+12=19 feet above the ground
2) the eye of the cow is
4 feet high
3) the opposite side of the triangle is
19-4=15 feet
4) the distance between cow eye and billboard is
"x"
5) tg (θ)=15/x
6) x=15/tg(Θ)
Answer:
meta beta
Step-by-step explanation:
diem ryugudnhkng.
1000₂<x₁₀<10000₂ = 1,000,000<x₁₀<100,000,000 reading one million is less than x₁₀, and x₁₀ is less than 100,000,000.
Here is each answer for x₁₀:
7= 282,475,249
8= 1,073,741,824
15= 576,650,390,625
16= 1,099,511,627,776
With those numbers, it doesn't look like any answer is right. I am thinking I am not understanding the question....