Answer:
x = 25
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse x is equal to the sum of the squares on the other two sides, that is
x² = 20² + 15² = 400 + 225 = 625 ( take the square root of both sides )
x = 
= 25
Answer:
A is positive anD B is negative
Tip: right your name on the line and it determines if it goes up. Or down. If up it’s positive and if it’s negative it goes down.
Step-by-step explanation:
Answer:
16.5
Step-by-step explanation:
Just put in the values of C and y first into the expression.
C = 4x + 5y
Put in values.
51 = 4x + 5(-3)
Evaluate.
51 = 4x + (-15)
Swap positions.
4x + (-15) = 51
Shift (-15) to the other side and change to (+15).
4x = 51 + 15
= 66
Find x.
x = 66 ÷ 4
x = 16.5
The y-intercept of the equation y = 4x - 2/3 is 2/3.
Answer:
well the other cathet is 2 square roots of 3. since the angles are 30° and 60° cathecathet is 2 times longer than the known. and to calculate x we use pythagoras teorem. witch leads me to an answer square root of 15
