Answer:
a.)x² + y² = 900
b.)y = √900 - x²
Step-by-step explanation:
P.S - The exact equation is as follows :
As given,
The shape of the roller coaster is a half of a circle. Center the circle at the origin and assume the highest point on this leg of the roller coaster is 30 feet above the ground.
a.)
Equation of circle be x² + y² = r²
As given , leg of the roller coaster is 30 feet above the ground.
⇒ r = 30
⇒x² + y² = 30²
⇒x² + y² = 900
∴ we get
Equation of height of Roller coaster - x² + y² = 900
b.)
As we have, x² + y² = 900
⇒y² = 900 - x²
⇒y = √900 - x²
Answer:
The fourth number is 13
Step-by-step explanation:
7+9+11+13 = 40 it's the only one that works
The equation of the line is y=(4/5)x+1 in slope-intercept form.
Answer:
Step-by-step explanation:
1/4 and 2/5
4×5=20
Answer:
- 7 ; 7 pounds loss in weight.
Step-by-step explanation:
Given that :
Week ______ weight loss/ gain
1 ____________ - 2
2 ____________ - 6
3 ____________ + 7
4 ____________ - 6
Loss in weight is denoted by a negative sign;
The change in weight is the net sum of weight loss over the 4 weeks period
(-2) + (-6) + (7) + (-6)
-2 - 6 + 7 - 6 =-7
Hence, there is a 7 pounds loss in weight over the 4 weeks period.