Answer:
$61.18
Step-by-step explanation:
The price last week was an unknown. We will call it x. x is an entire amount, so it is 100% of x.
This week, the price is 15% lower. Since 100% - 15% = 85%, the price this week is 85% of what it was last week. Last week it was x, so this week, the price is 85% of x.
85% of x = $52
0.85x = $52
Divide both sides by 0.85:
0.85x/0.85 = $52/0.85
x = $61.1764...
Answer: $61.18
3 decimal places. You start with the number with the two decimal places and then you add a decimal place because the number you're multiplying it by has one decimal place.
Answer:
0.74
Step-by-step explanation:
The standard deviation of a data set is the sqaure root of the variance, so first we must find the variance. The equation for variance is:
σ² = ![\frac{{(x_{1}-[x bar] )}^{2}+...+{(x_{n}-[x bar]) }^{2}}{n}](https://tex.z-dn.net/?f=%5Cfrac%7B%7B%28x_%7B1%7D-%5Bx%20bar%5D%20%29%7D%5E%7B2%7D%2B...%2B%7B%28x_%7Bn%7D-%5Bx%20bar%5D%29%20%7D%5E%7B2%7D%7D%7Bn%7D)
x = number in the data set
xbar = median of the data set
n = number of terms
Plugging in the given values, the equation for the variance of this number set is:
σ² = 
Solving:
= 
= 
σ² = 0.546875
Since the standard devianation is the sqaure root of the variance, we'll sqaure 0.546875:
= 0.73950997288745
= 0.74 (rounded)
hope this helps!
1) sin(60 degrees)=<span>0.86602540378 (Make sure your calculator is in degrees, not radians)
</span>√3/2
√3=<span>1.73205080757
</span><span>1.73205080757/2
</span>=0.866025404
1) IS CORRECT
Solve the rest using the same technique.
Hope this helps! A thanks/brainliest answer would be appreciated :)
The correct answer I think is true, I’m not forsure so you might have to double check
