Elimination Method:
5x - 4y = 6
-5x + 4y = -10
5x - 4y = 6
+ -5x + 4y = -10
————————-
0 = -4
This statement is false, so there is no solution to the system of equations.
Answer:
$38.4
Step-by-step explanation:
20% discount means he has to pay:
100 - 20 = 80% of the marked price.
80/100 × 48 = 38.4
(x-1)+x+(x+1)=915
3x=915
x=305
304, 305, 306
I NEED MORE DETAILS PLEASE AND THE PHOTO IS BLURRY
A right triangle is a special type of triangle where one of the angles makes a right angle or has 90 degrees. The longest side is called as the hypotenuse. The sides can be related by the Pythagorean theorem but it would not be useful here since we are given an angle. Instead, we find other relations. The sides and the angles can also be related by trigonometric functions. For this case we use cosine given that the leg given is adjacent to the angle. We calculate as follows:
cosine 51 = 12 units / hypotenuse
hypotenuse = 19.07 units
The length of the hypotenuse would be about 19.07 units.
