The speed of a toy car over time can be represented by a parabola with minimum speed 2 m/s after 3 seconds. After 5 seconds, the
car's speed is 3 m/s. What is the equation in vertex form of a parabola that represents the car's speed, y, over time, x?
2 answers:
Answer:
Step-by-step explanation:
y=ax²+bx+c
x=0,y=0,c=0
y=ax²+bx
2=9a+3b (×-5)
3=25a+5b(×3)
add
9-10=75a-45a+15b-15b
30a=-1
a=-1/(30)
2=9×(-1/30)+3b
3b=2+3/10=23/10
b=23/30
y=-1/30 x²+23/30=-1/30(x²+23x+(23/2)²)+1/30 ×(529/4)
y=-1/30(x+23/2)²+529/120
You have to solve x multiplying y
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Im not smart im not that sure of my answer but 23.3
Answer:
<h2>x=52</h2>
Basic fact:
<em>angles in a point add up to 360</em>
Step-by-step explanation:
20+165+33+90(that is the right angle)+x=360
20+165+33+90=308
308+x=360
-308
x=52
Answer: The slope is 4 and the Y intercept is 5.
Step-by-step explanation: hope this helps <3
Answer:
8
Step-by-step explanation:
Okay so there is 32 cups in 8 quarts and he sold 6 cups Saturday and 18 cups Sunday.
Add 8+18
Subtract 24-32 to get 8
