Answer:
Step-by-step explanation:
1.
2.
3. b =
Can't be simplified.
Answer:
y = 3x² + 54x + 240
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
here (h, k) = (- 9, - 3), thus
y = a(x + 9)² - 3
To find a substitute either of the roots into the equation
Using (- 8, 0), then
0 = a(- 8 + 9)² - 3
0 = a - 3 ( add 3 to both sides )
a = 3
y = 3(x + 9)² - 3 ← in vertex form
Expand factor and simplify
y = 3(x² + 18x + 81) - 3
= 3x² + 54x + 243 - 3
= 3x² + 54x + 240 ← in standard form
yeah there is u should be able to by clicking on the paper clip
Answer:
-1 3/4 =x
Step-by-step explanation:
-3 1/2= 1/2x+1/2x+x
Combine like terms
-3 1/2 = 2x
Change to an improper fraction
- ( 2*3+1)/2 = 2x
-7/2 = 2x
Multiply each side by 1/2
-7/2 *1/2 = 2x* 1/2
-7/4 = x
Changing to a mixed number
-4/4 -3/4 =x
-1 3/4 =x
Answer:
2 + (−7) = −5, because −5 is 7 units to the left of 2
Step-by-step explanation:
Point S is on 2 on the number line shows Samuel's score after the first round of a quiz. In round 2, he lost 7 points
At first point S is 2 on the number line
So S is 2
in the second round he lost 7 points
for lost , subtract 7 from 2
so the point S is on -5 on round 2
2 + (−7) = −5, because −5 is 7 units to the left of 2