Second side= x
First side = 2x
Third side = x+5
x+2x+x+5=49
4x=44
x=11
1st side= 22
2nd side = 11
3rd side = 16
Answer:
Option (3)
Step-by-step explanation:
Inequality n < -2 will be represented on a number line as,
A ray starting form -2 with a hollow circle directing towards -5.
Similarly, other inequality n ≥ 4 will be represented by a ray heading towards positive integers with a staring point 4 marked with a dark circle.
By combining these inequalities on a number line we get Option (3) as a correct option.
Answer:
… you can write it in the form ax = b (a ≠ 0).
Step-by-step explanation:
In that case, there is one unique solution: x = b/a.
If a = 0 and b ≠ 0, we get 0x = b , and there are no solutions.
If a = 0 and b = 0, we get 0x = 0, and there are an infinite number of solutions.
Answer:
15 or -5
Step-by-step explanation:
√(25-40x)= x-10
Squaring both sides
25 - 40x = (x -10)²
25 - 40x = x² -20x + 100
x² - 20x + 40x + 100 - 25 =0
x² +20x = -75
x² + 20x + 10² = -75 + 100
(x + 10)² = 25
x - 10 = ±√25
x - 10 = ±5
x = ±5 + 10
x = 15 or x = -5