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galina1969 [7]
3 years ago
9

WILL GIVE BRAINLIEST

Mathematics
2 answers:
Alex777 [14]3 years ago
5 0
To solve this, you need to use the equation that gives the relationship between time(t), speed(s), and distance(d):

s=d/t
d=st

For the steam boat, the velocity was 36.8, and the time was 1.75 hours before the speedboat left plus the 1.8 hours after the speedboat left. Substitute this information into the equation to find the distance it travels:

d=36.8*(1.75+1.8)
d=130.64 km

According to the question, we know that the distance the speedboat travels is 86.9 km behind the steam boat. So d for the speedboat is 130.64-86.9, or
43.74 km. It is also given that the speedboat travels for 1.8 hours, so t=1.8. Substitute this information into the equation to find the speed.

s=43.74/1.8
s=24.3 km/h

So the speed of the boat is 24.3 km/h
WINSTONCH [101]3 years ago
4 0

Hi there!


My name is Chris and I'll be helping you today!


So your question states that a boat departed the port at 36.8 km/h.

After 1.75 hours, a second boat emerges from the port.

After 1.8 hours, the second boat is 86.9 km away from the first boat.

Also, remember that speed equals distance over time.


Therefore, your answer will be: The speed boat's speed in km/h was 24.3 km/h. Forgive me if I am incorrect.


Enjoy your day!


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3 0
3 years ago
Roberta Arthur had the following reciepts for the week of April 12th: 50$ gift; 25$ rebate; April 13th, 2.45$ refund on aluminum
oksian1 [2.3K]

Answer:

$329.44

Step-by-step explanation:

 $50-25= 25

 25.00-2.45=22.55

 299.89+22.55=322.44

322.44+7.00= 329.44

I didnt see april 15 if its supposed to be added i there just add 299.89 to the total.

7 0
3 years ago
15. JAGUARUNDI A jaguarundi springs from a fence post to swat at a low flying bird.
sukhopar [10]

Answer:

The discriminant, -14.71 < 0, shows that there is no solution of the equation, h = -16·t² + 22.3·t + 2, at the line 'h = 10' feet, therefore, the Jaguarundi height as she springs will not be up to 10 feet and therefore she will not reach the bird

Step-by-step explanation:

From the question, the equation that models the Jaguarundi's height, 'h', ma be written approximately as follows;

h = -16·t² + 22.3·t + 2

Where;

t = The time (duration) in seconds

The discriminant of the equation a·x² + b·x + c = 0 is  b² - 4·a·c

When h = 10, we have;

10 = -16·t² + 22.3·t + 2

∴ 0 = -16·t² + 22.3·t + 2 - 10 = -16·t² + 22.3·t - 8

The discriminant of the given quadratic equation is given as follows;

The discriminant = 22.3² - 4 × (-16 × (-8)) = -14.71 < 0

Therefore, the function, h = -16·t² + 22.3·t + 2 has no real root at h = 10

The parabola does not reach or pass through the line h = 10 which is the height at which the bird is flying.

The Jaguarundi will not reach the bird flying at the height of 10 feet.

7 0
3 years ago
Read 2 more answers
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victus00 [196]

Answer:

Not sure of the answer, due to none matching the answer of the expression.

Step-by-step explanation:

62 + 42

104

Hopefully this helps!

Brainliest please?

3 0
3 years ago
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o-na [289]

Answer:

1 hot dog for$0.50

Step-by-step explanation:

i hope these answer is correct

3 0
3 years ago
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