It would be A. You can find this out by using SOH CAH TOA,
SOH means sin= opposite/hypotenuse
CAH mean cos= adjacent/hypotenuse
TOA means tangent= opposite/adjacent
You would use CAH since you are trying to find cos∠C
You would have cos∠C=10/26.
26 is the hypotenuse since it is opposite the right angle and is the biggest side.
10 is the adjacent since it is right next to C
You would simplify this down to 5/13 by dividing by 2.
This gives you A.
Answer:
Step-by-step explanation:
Given that in a recent poll 1 of 1000 American adults, the number saying that exercise is an important part of daily life was 753.
Sample proportion = ![\frac{753}{1000} =0.753](https://tex.z-dn.net/?f=%5Cfrac%7B753%7D%7B1000%7D%20%3D0.753)
To find 90% confidence interval we must find std error of proportion first
As per central limit theorem, sample proportion will follow a normal distribution with mean = 0.753
Std error of proportion= ![\sqrt{0.753*0.247/1000} \\=0.01363](https://tex.z-dn.net/?f=%5Csqrt%7B0.753%2A0.247%2F1000%7D%20%5C%5C%3D0.01363)
90% Z critical value = 1.645
Margin of error = 1.645*0.01363 = 0.0224
Confidence interval lower bound = 0.753-0.0224=0.731
Upper bound = 0.775
The sale price is $6.24 because you divide 24.95 by .25 which is 25%.<span />
The answer is 6.1 = 6 1/10
It looks like Brenda did since Michael forgot to take out the parenthesis<span />