Answer:
A
Step-by-step explanation:
we can find using the trigonometric formulas
we can find y by using cosine.
cos = adj / hyp
cos 60 = y / 10
y = 10 cos 60
y = 5
now we can use the Pythagorean theorem since we have the base and hyp
a² + b² = c²
5² + b² = 10²
25 + b² = 100
b² = 75
b = 5√3
10-7=3 so his rate is 18 boxes every 3 hours 18/3 is 6 boxes per hour, 12-7=5 hours 5 x 6 = 30 boxes by 12pm
<h2>~<u>Solution</u> :-</h2>
- We can convert a negative exponents by taking it as a fraction of denominator with numerator 1. As seen;
- Hence, we can remove the negative exponent by converting the exponent to $\bf \frac{1}{y^{1}}$.
14 girls
Total students = 14+12 = 26
14/26 = 7/13
Answer = 7/13
102+39+B=180
141+B=180
-141 -141
B=39
its the first one