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IRINA_888 [86]
3 years ago
15

The function D(h)=25h+50 models the distance a train traveled from a station, in miles, h hours after crossing a bridge, what is

the meaning of the x intercept?
Mathematics
2 answers:
omeli [17]3 years ago
7 0
The train crossed the bridge 2h after leaving the station.
Furkat [3]3 years ago
6 0
The x intercept is where the line crosses the y axis or where D(h)=0
D(h) is the distance that the train is from the station

so that means that when D(h)=0, that is when the train is at the station
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Sum to n terms series 2.3+3.4+4.5+…<br>​
mart [117]

Answer:

5.6

Step-by-step explanation:

3.4-2.3=1.1

2.3+1.1=3.4

3.4+1.1=4.5

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3 0
3 years ago
Which of the following is equivalent to 2/9
iragen [17]

Answer:

B would be the answer:))

Step-by-step explanation:

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5 0
2 years ago
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Consider the equation n2+5=21.
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Step-by-step explanation:

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6 0
3 years ago
an artificial lake is in the shape of a rectangle and has an area of 9/20 square mile. the width of the lake is 1/5 the length o
Gnom [1K]
X=length
y=width
Area (rectangle)=length x width
we suggest this system of  equations:
y=x/5
xy=9/20
solve this system of equations by substitution method:
x(x/5)=9/20
x²/5=9/20
Least common multiple=20
4x²=9
x²=9/4
x=⁺₋√(9/4)
we have two solutions:
x₁=-3/2   it does not validate
x₂=3/2    ⇒y=x/5=(3/2)/5=3/10

The dimensions of the lake are:
lengh=3/2 miles
width=3/10 miles

to check:
Area=3/2 miles x 3/10 miles=9/20 miles².
width is 1/5 the length of the lake ⇒  3/10 miles=(3/2) /5 miles

7 0
3 years ago
Cark earned grades of 62, 78, 59, and 89 on four tests.<br><br><br>what is the mean of his grades​
serious [3.7K]

Answer:

72

Step-by-step explanation:

mean=average. to get average, you add up the numbers and divide by how many numbers. they add upp to 288 and since theres 4 test grades, divide by 4 to get 72.

4 0
3 years ago
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