Answer:
x = 5 , y = 5
Step-by-step explanation:
Using the sine and cosine ratios in the right triangle and exact values.
sin30° = , cos30° = , then
sin30°= = = ( cross- multiply )
2x = 10 ( divide both sides by 2 )
x = 5
and
cos30° = = = ( cross- multiply )
2y = 10 ( divide both sides by 2 )
y = 5
for example if you have 3x^2+2x-1 then a=3 b=2 and c=-1 you plug those into the formula and solve to get the formula just look it up and go to images
If you want to estimate to the tens, the answer is 680
If you want to estimate to the hundreds, the answer is 700
If you want to estimate to the thousands then the answer would be not an answer
The real answer without estimating is 681
The answer is right above me yw lol