Answer:
Quest 1. is C, i.e 8. besides thier base are equal.
Quest 2. is D
Wuest 3. is C
Id there are 21 girls according to my calculations there would be a heap amount of boys which is 23
1+tan^2(y)=1/cos^2(y)
cos 2y -1=cos^2(y) -sin^2(y)-cos^2(y) -sin^2(y)
I can help, but what are you exactly trying to do here?
Answer:
x= 7
Step-by-step explanation:
The equation is 8+4= 2(x-1)
Distribute into the parenthesis.
8+4= 2x-2
Now, add.
12= 2x-2
Add 2 to both sides.
12= 2x-2
+2 +2
Then, divide by 2 to both sides to isolate the variable.
<u>14</u>= <u>2x</u>
2 2
x=7
