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asshattt
19.12.2019 •
Mathematics
When amy roller-skates, she moves 110 yards per minute. what is her speed in miles per hour? round your answer to the nearest hundredth. (hint: 1 yd= 3 ft; 5280 ft = 1 yd.; 60 min= 1 hr)
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Ответ:
Speed of Amy is 3.75 miles per hour.
Step-by-step explanation:
We have, speed of Amy = 110 yards per minute
This means, she covers 110 yards of distance in 1 minute.
Now, to convert the speed of Amy into miles per hour, we will first convert the distance from yards into miles and then convert time from minutes to hour.
We know that,
1 yard = 3 feet
∴ 110 yards = 3 × 110 feet = 330 feet
Now, we also know that,
5280 feet = 1 mile
∴ 1 feet =
miles
So, 330 feet =
=
miles
∴ 110 yards = 330 feet =
miles
Now, 60 min = 1 hr
∴ 1 min =
hrs
So, 110 yards =
miles and 1 min =
hr
So, we can say that, Amy covers a distance of
miles in
We know that,
Therefore, the speed of Amy in miles/hr is 3.75 miles/hr.
Ответ:
The general form of a quadratic equation is
.
We want to know what is meant by the constant term, c.
If we let x=0, we have y=c. What does this mean?
y is the height and x is time, so y=c at x=0 means at time 0, the height of projectile is c, or, the initial height of the projectile is c.
c, thus, is the initial height.
ANSWER: "the initial height of the projectile"