Answer:
30
Step-by-step explanation:
1 ten = 10, 20 ones = 20
Answer:
27
Step-by-step explanation:
Calculator solves all
a + s = 775
s = a + 75 ; where a = adult tickets and s = student tickets
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Solve for s in the first equation. Subtract a from both sides.
s = 775 - a
Plug s into the second equation.
(775 - a) = a + 75
Add a to both sides.
775 = 2a + 75
Subtract 75 from both sides.
700 = 2a
Divide both sides by 2.
a = 350
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350 adult tickets were sold.
Answer:
The equation for height is

Step-by-step explanation:
we are given
An iron ball is bobbing up and down on the end of a spring
So, height function must be trigonometric in nature
So, we can use formula

now, we can find A , B and D
Calculation of A:
maximum height 46 inch
minimum height =18 inch
so,

Calculation of B:
It takes the ball 2 seconds to go from its maximum height to its minimum height
So, half of time period is 2 sec


now, we can use period formula

we can find B



Calculation of D:
Max=46
min=18


now, we can plug these values into formula
and we get

Answer:
x = -5, y = 7 or you can say (-5, 7)