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Liono4ka [1.6K]
3 years ago
10

In a volcano, erupting lava flows continuously through a tube system about 17 kilometers to the sea. Assume a lava flow speed of

0.5 kilometer per hou calculate how long it takes to reach the sea.​
Mathematics
2 answers:
Komok [63]3 years ago
4 0

Answer:

Distance = rate x time or d = rt...that means time t = d/r...and we have

t = 21 km / .5 km/hr = 42 hr

Step-by-step explanation:

Virty [35]3 years ago
3 0

Answer:

42h

Step-by-step explanation:

Distance = rate x time or d = rt...that means time t = d/r...and we have

t = 21 km / .5 km/hr = 42 hr

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1 is the only number that's neither prime nor composite-right?
irina [24]

Answer:

No

Step-by-step explanation:

1 is a prime number

0 is the only number that is neither prime or composite

4 0
3 years ago
H=7+44t-16^2
zalisa [80]

Answer:

When t=2.1753 & t=.5746 , h=27

Don't worry, I got you. Also, my calculator does too.

We set h equal to 27, because we want the height to be 27 when we solve for t.

That leaves us with:

27 = 7 + 44t - 16t^2

Simplify like terms,

20 = 44t - 16t^2

Move 20 onto the right side, so we can use quadratic equation

44t - 16t^2 - 20 = 0 --> -16t^2 + 44t - 20

Using quadratic, you get

t=2.1753 & t=.5746

<u>poster confirmed : "It’s t=2.18 and t=0.57"</u>

3 0
2 years ago
If f(x)=x*−81 and g(x)=(x−9)−1(x+9), find g(x)×f(x).
Nostrana [21]
F(x) = x²-81

g(x) = (x-9) -1(x+9)

= (x-9) -x-9


g(x) • f(x)



= [x²-81 ] • [ (x-9) -x-9 ]

=[ x²-81 ] • [ (x-x -9-9) ]
= [ x²-81 ] •[0-18]
= [ x²-81] •[ -18]

= -18•x² +-81•-18
= -18x²+1458
7 0
3 years ago
The area of a triangular region is 3,136 sq . cm. if the perpendicular from one vertex to the opposite side is 64 cm, find the l
eimsori [14]

area=3136sq.cm

height=perpendicular=64 cm

base=?

area=1/2*base*height

3136=1/2*base*64

therefore,, base=98

Please can you give me brainliest

7 0
2 years ago
Find the value of x.<br> 65°<br> (x + 12)<br> X-53<br> X = 65<br> x-77<br> x = 103
SpyIntel [72]

Answer:

The answer is -77

Step-by-step explanation:

Hope this helped! Have a great day!

8 0
2 years ago
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