Step-by-step explanation:
General equation of a line in slope intercept form is given by
y = mx+c
where m is slope and c is y-intercept
Here, y = 5x+9
Answer:
x>21
Step-by-step explanation:
3x-15>48
Add 15 to each side
3x-15+15>48+15
3x > 63
Divide by 3
3x/3 >63/3
x > 21
Open circle at 21 since there is no equals sign, line to the right
Sin A = opposite / hypotenuse
If angle A is in the first quadrant, that means both x and y coordinate are positive.
Now you can draw triangle. Since sinA = 1/3, opposite side may be 1, so then hypotenuse side must be 3.
Now you can use Pythagorean Theorem to solve for the length of adjacent side:
a² + b² = c²
1 + b² = 9
b² = 8
b = 2√2
So adjacent side is 2√2.
So now we can solve for cosA:
cosA = adjacent / hypotenuse = 2√2 / 3
Final answer: 2√2 / 3
Answer:
x^2 +4x = 18
Step-by-step explanation:
The variable y is isolated in the first equation by dividing both sides by the coefficient of y:
3y = 12x . . . . . . given
3y/3 = 12x/3 . . . . . divide by the coefficient of y
y = 4x . . . . . . . simplify
__
This expression (4x) is put in place of y when substitution is used.
x^2 +y = 18 . . . . given
x^2 +4x = 18 . . . . . with 4x substituted for y
Answer:
<h2>=-7.1h+2k+1</h2>
Step-by-step explanation:
