(3.4)/(12.92)
=(3+2/5)/(12+92/100)
=(15/5+2/5)/(1200/100+92/100)
=(17/5)/(1292/100)
=(17/5)*(100/1292)
=1700/6460
=170/646
=85/323
A) 12 and -9
12 + (-9) = 3
12 - (-9) = 21
.
b) i think there is no right answer here ?
:)
2 + d = 2 - 3(d- 5) - 2
First, cancel 2 on both sides. / Your problem should look like:
Second, expand. / Your problem should look like:
Third, simplify -3d + 15 - 2 to get -3d + 13. / Your problem should look like:
Fourth, add 3d to both sides. / Your problem should look like:
Fifth, add d + 3d to get 4d. / Your problem should look like:
Sixth, divide both sides by 4. / Your problem should look like:

Answer as fraction:

Answer as decimal:
The answer:
ABC is a right triangle.
according to the figure, the length AC is the opposite side relative to the angle 40°,
for that, the main formula is
sin40° = opposite side / hypotenuse
opposite side =AC, and hypotenuse = 10 in
therefore, sin40° = AC / 10, and then AC = 10 sin40°
so for finding the value of AC, we can use AC = 10 sin40°
look at the image for more explanation