Solve for x over the real numbers using factor method:
10 x^2 + 19 x - 15 = 0
The left hand side factors into a product with two terms:
(2 x + 5) (5 x - 3) = 0
Split into two equations:
2 x + 5 = 0 or 5 x - 3 = 0
Subtract 5 from both sides:
2 x = -5 or 5 x - 3 = 0
Divide both sides by 2:
x = -5/2 or 5 x - 3 = 0
Add 3 to both sides:
x = -5/2 or 5 x = 3
Divide both sides by 5:
Answer: x = -5/2 or x = 3/5
Answer:If a and b are the lengths of the legs of a right triangle and c is the length of the hypotenuse, then the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse
Answer:
B
Step-by-step explanation:
- 9.2(8x - 4) + 0.7(2 + 6.3x) ← distribute parenthesis
= - 73.6x + 36.8 + 1.4 + 4.41x ← collect like terms
= -73.6x + 4.41x + 36.8 + 1.4
= - 69.19 + 38.2
Answer:
$23
Step-by-step explanation:
20*.15=3
($3 is the tip)
20+3=23
