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Aleksandr-060686 [28]
3 years ago
15

The function h(t)=210-15t models the attitude of a hot air ballon over time t,in minutes.Explain what h(10)means in the context

of the real-world scenario,and how to find its value
Mathematics
1 answer:
Leokris [45]3 years ago
7 0
Hi there! The answer is h(10) = 60. h(10) means the height of the hot air balloon after 10 minutes.

We have the following function
h(t) = 210 - 15t

Filling in t = 10 gives
h(10) = 210 - 15 \times 10 = 210 - 150 = 60

Therefore, the height (h) of the hot air balloon after ten minutes (t = 10) is 60.
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Help please!posted picture of question
Evgen [1.6K]
The region is in the first quadrant, and the axis are continuous lines, then x>=0 and y>=0
The region from x=0 to x=1 is below a dashed line that goes through the points:
P1=(0,2)=(x1,y1)→x1=0, y1=2
P2=(1,3)=(x2,y2)→x2=1, y2=3
We can find the equation of this line using the point-slope equation:
y-y1=m(x-x1)
m=(y2-y1)/(x2-x1)
m=(3-2)/(1-0)
m=1/1
m=1
y-2=1(x-0)
y-2=1(x)
y-2=x
y-2+2=x+2
y=x+2
The region is below this line, and the line is dashed, then the region from x=0 to x=1 is:
y<x+2 (Options A or B)

The region from x=2 to x=4 is below the line that goes through the points:
P2=(1,3)=(x2,y2)→x2=1, y2=3
P3=(4,0)=(x3,y3)→x3=4, y3=0
We can find the equation of this line using the point-slope equation:
y-y3=m(x-x3)
m=(y3-y2)/(x3-x2)
m=(0-3)/(4-1)
m=(-3)/3
m=-1
y-0=-1(x-4)
y=-x+4
The region is below this line, and the line is continuos, then the region from x=1 to x=4 is:
y<=-x+2 (Option B)

Answer: The system of inequalities would produce the region indicated on the graph is Option B

8 0
3 years ago
Points N and R both lie on circle O. Line segment RQ is tangent to the circle at point R.
4vir4ik [10]

Answer:

15.0

Step-by-step explanation:

Let's start by looking at triangle ORQ. Since RQ is tangent to the circle, we know that angle ∠ORQ is 90°. Then, since OR is equivalent to the radius of 5, RQ is 5√3, and side OQ is clearly larger than RQ, we can identify this as a 90-60-30 degree triangle. This makes side OQ have a length of 10, and angle ∠QOR, opposite of the second largest side, has the second largest angle of 60°, leaving ∠OQR with an angle of 30°.

The formula for the chord length is 2r*sin(c/2), with c being the angle between the two points on the circle (in this case, ∠QOR=∠NOR).. Our radius is 5, so the length of chord NR is 2*5*sin(60/2)=5, making our answer 5(ON)+5(OR)+5(RN)

4 0
3 years ago
Read 2 more answers
If Mr. Callahan expects to sell 150 bunches of flowers next week, which is the best prediction of how many bunches of daffodils
djyliett [7]
28, because 150/7 is about 21 and 28 is the closest answer. I would need more info for it to be a definite answer but that is what I would choose. Hope I helped!

7 0
2 years ago
It takes Bruce 12 h to complete his training. It takes Oliver approximately 2 days, 2 h, and 15 min to complete his training. Ho
Bond [772]

Answer:

Oliver completed his training work in 50.25 hours

Step-by-step explanation:

we know that

1\ day= 24\ hours

1\ hour=60\ minutes

we have

2\ days, 2\ h,\ and\ 15\ min

<u><em>Convert days to hours</em></u>

2\ days=2(24)=48\ hours

<u><em>Convert minutes to hour</em></u>

15\ min=15(1/60)=1/4=0.25\ h

so

2\ days, 2\ h,\ and\ 15\ min=(48)+(2)+(0.25)=50.25\ h

therefore

Oliver completed his training work in 50.25 hours

4 0
3 years ago
What is a standard form equation of a circle
Gre4nikov [31]

Answer:

360 degrees

Step-by-step explanation:

Its Easy Geometry

7 0
3 years ago
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