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Nostrana [21]
3 years ago
14

In two or more complete sentences, explain how to find the time it takes for a rocket following the path of the parametric equat

ions
x=3t^2 and y=−4t+16 to hit the ground.
Mathematics
1 answer:
alukav5142 [94]3 years ago
4 0

Answer:

This problem is easier than it appears to be at first glance! If we assume the ground is located at y = 0, then we only use the following equation to solve:

y = -9t + 18

0 = -9t + 18

-18 = -9t

t = 2

Therefore, it takes 2 units of time (whatever units the problem specifically states) for the rocket to hit the ground.

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the lenght of an arc in a circle with diameter 10 inches is 1.25π inches. determine the measure of the arc.​
Luda [366]

Answer:

the \:  angle \:  is \:  0.25\pi

Step-by-step explanation:

the arc length is equal to the radius x angle (in radians)

s=ra

s= arc length, r= radius and a= the angle

solve for a ; a= s/r; a=

1.25\pi/5

4 0
3 years ago
How do you find slope, y- intercept, slope- intercept form, and point slope form for (-10,-17) (-8,-15.7)
krek1111 [17]

Answer:

-10=x1 -17=y1

-8=x2 -15.7=y2

formula:

y2 -y1

_____ =m

x2-x1

y1=m(x1)+b

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
Luisa hiked 7 miles of 21-mile trail. what percent of the trail did she hike
7nadin3 [17]
If I'm correct she hiked 1.47 miles of the trail in percentages
5 0
4 years ago
You begin with $25 in a savings account and $50 in your checking account. Each week you deposit $5 into savings and $10 into che
Phantasy [73]

Answer:

The amount in checking will always be twice in any week.

Step-by-step explanation:

Let's say, w represents the week, s represents the saving account and c represents the checking account.

Balance in saving account in any week =s=5w+25

Balance in checking account in any week  =c=10w+50

Translate the statement into mathematical equation. Remember to use " = " for word "is" in the given statement.

We have to find w for 2s = c.

Putting the values, we have:

2(5w+25)=10w+50

\Rightarrow \mathrm{True\:for\:all}\:w

Which means in each week the amount in checking is twice the amount in savings.

Best Regards!

7 0
3 years ago
Evaluate the expression 4y/Yfor x=8 and y=0
jeyben [28]
To evaluate 4y/x for x=8 and y=0 we shall have:
4y/x=(4×0)/8
=0/8
=0
Answer; 0
8 0
3 years ago
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