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2 years ago

Please Help!!!!!!!!!!

Mathematics

1 answer:

Natalka [10]2 years ago

4 0

Given : A submarine descends at a rate of 2.6 kilometers per hour.

If the ocean floor is 6.24 kilometers below sea level,

To Find : how long will it take the submarine to descend to the ocean floor?

Solution:

The submarine descends at a rate of 2.6 kilometers per hour.

Speed = 2.6 km/hr

The ocean floor is 6.24 kilometers below sea level,

Distance to be covered = 6.24 km

Time= Distance / Speed

= 6.24 / 2.6

= 2.4 hr

The submarine will take 2.4 hrs to descend to the ocean floor

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3 years ago

Point G is located at (6, 2) on the coordinate plane. Point G is reflected over the y -axis to create point G^ prime . What orde

Lilit [14]

Answer:

The ordered pair that best describes the location of G' is (-6,2).

Step-by-step explanation:

Reflecting a point over the y-axis:

When a point (x,y) is reflected over the y-axis, it's x coordinate is multiplied by -1, while the y-coordinate stays the same. Thus:

(x,y) -> (-x,y).

Point G is located at (6, 2)

When reflected over the y-axis:

G'(-6,2).

The ordered pair that best describes the location of G' is (-6,2).

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2 years ago

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2 years ago

4. You and a friend go to the movies and split the cost of the movie tickets and snacks. You pay the bill. You tell your friend

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2 years ago

Read 2 more answers

Could i have some really really quick help?

nata0808 [166]

Answer:

1125 m

Step-by-step explanation:

Given equation:

$h=-5t^2+150t$

where:

h = height (in metres)
t = time (in seconds)

Method 1

Rewrite the equation in vertex form by completing the square:

$h=-5t^2+150t$

$\implies h=-5t^2+150t-1125+1125$

$\implies h=-5(t^2-30t+225)+1125$

$\implies h=-5(t-15)^2+1125$

The vertex (15, 1125) is the turning point of the parabola (minimum or maximum point). As the leading coefficient of the given equation is negative, the parabola opens downward, and so vertex is the maximum point. Therefore, the maximum height is the y-value of the vertex: 1125 metres.

Method 2

Differentiate the function:

$\implies \dfrac{dh}{dt}=-10t+150$