Natasha was thinking of a number. Natasha divides by 5, then adds 11 to get an answer of 11. What was the original number?

A naval engineer uses the function, P, to analyze the effects of water pressure on submarines. The function P(d) measures the pr

saw5 [17]

The function that the naval engineer uses related P (pressure) and d (depth of ocean).

Is there any restriction on the domain ( d: depth of the ocean)? Yes!

The domain would be from 0 (at sea level or 0 depth) until the depth of the ocean (which is not infinite). Hence, we can write:

$0\leq d\leq DepthOfSeaFloor$

Choice D is the correct one.

ANSWER: D

5 0

4 years ago

Read 2 more answers

A culture of 100,000 bacteria triples every hour. How many bacteria were there 3 hours ago? (easy steps please)

Crank

Answer:

If it multiplies by 3 each hour, you would divide by three if you are looking for the first term. It is Geometric Sequence.

Step-by-step explanation:

100,000/3=33333.3333333 (1/3)

5 0

3 years ago

Scientists studying dolphin echolocation simulate the projection of a bottlenose dolphin's clicking sounds using computer

lina2011 [118]

Step-by-step explanation:

The equation of a parabola with focus at (h, k) and the directrix y = p is given by the following formula:

(y - k)^2 = 4 * f * (x - h)

In this case, the focus is at the origin (0, 0) and the directrix is the line y = -1.3, so the equation representing the cross section of the reflector is:

y^2 = 4 * f * x

= 4 * (-1.3) * x

= -5.2x

The depth of the reflector is the distance from the vertex to the directrix. In this case, the vertex is at the origin, so the depth is simply the distance from the origin to the line y = -1.3. Since the directrix is a horizontal line, this distance is simply the absolute value of the y-coordinate of the line, which is 1.3 inches. Therefore, the depth of the reflector is approximately 1.3 inches.

4 0

1 year ago

Which graph could represent a constant balance in a bank account over time? A graph titled Daily Balance. The horizontal axis sh

kramer

Answer:

See the image.

Step-by-step explanation:

Constant balance in a bank account signifies that the balance in the account remains constant throughout time.

That is, it did not rise or diminish with time.

As a result, the graph of such a circumstance is a horizontal line parallel to the Time period axis.

4 0

2 years ago

The unshaded area inside the figure to the right is 648 in.² Use this fact to write an equation involving x. Then solve the equa

FrozenT [24]

The second order polynomial that involves the variable x (border inside the rectangle) and associated to the unshaded area is x² - 62 · x + 232 = 0.

<h3>How to derive an expression for the area of an unshaded region of a rectangle</h3>

The area of a rectangle (A), in square inches, is equal to the product of its width (w), in inches, and its height (h), in inches. According to the figure, we have two proportional rectangles and we need to derive an expression that describes the value of the unshaded area.

If we know that A = 648 in², w = 22 - x and h = 40 - x, then the expression is derived below:

A = w · h

(22 - x) · (40 - x) = 648

40 · (22 - x) - x · (22 - x) = 648

880 - 40 · x - 22 · x + x² = 648

x² - 62 · x + 232 = 0

The second order polynomial that involves the variable x (border inside the rectangle) and associated to the unshaded area is x² - 62 · x + 232 = 0. $\blacksquare$

To learn more on polynomials, we kindly invite to check this verified question: brainly.com/question/11536910

3 0

2 years ago