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2 years ago

9

An airplane is ascending at a constant rate of 15 feet per second what is the change in altitude during 10 minutes of flight

1 answer:

fenix001 [56]2 years ago

6 0

Answer:

9000 ft

Step-by-step explanation:

Given: A airplane is ascending at a constant rate of 15 feet per second,

What we need to know: The change in altitude during 10 minutes of flight,

60 seconds = 1 minute

60 × 10

= 600 seconds

600 × 15

= 9000 ft

Therefore there was a 9000 ft change in altitude during the 10 minutes of the flight.

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If f(1) = 10 and f(n) = f(n = 1) – 4 then find the value of f(5).

svetoff [14.1K]

Given:

$f(1)=10$ and $f(n)=f(n-1)-4$ .

To find:

The value of f(5).

Solution:

We have,

$f(n)=f(n-1)-4$

For $n=2$ ,

$f(2)=f(2-1)-4$

$f(2)=f(1)-4$

$f(2)=10-4$

$f(2)=6$

For $n=3$ ,

$f(3)=f(3-1)-4$

$f(3)=f(2)-4$

$f(3)=6-4$

$f(3)=2$

For $n=4$ ,

$f(4)=f(4-1)-4$

$f(4)=f(3)-4$

$f(4)=2-4$

$f(4)=-2$

For $n=5$ ,

$f(5)=f(5-1)-4$

$f(5)=f(4)-4$

$f(5)=-2-4$

$f(5)=-6$

Therefore, the value of $f(5)$ is $-6$ .

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3 years ago

In 1979, zoologists estimated the number of fish in a local pond to be about

rewona [7]

Answer:

693 fish

Step-by-step explanation:

In 10 years, we can tell that the amount of fish increased by 1.833...(990 divided by 540) times. If we divide 1.833... by 10, we can find how much the pond increases by yearly. we get 0.1833... If we multiply that by 7 (because the gap between 1986 and 1979 is 7 years), we get 1.2833... So, if we multiply 540 by 1.28333..., we get 693 fish.

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3 years ago

£220 is invested at 3% pa simple work out the interest for 8 years.

Svetllana [295]

Answer:

The answer is £52.8

Step-by-step explanation:

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2 years ago

a rectangle has a length of 9.00 inches with a width of 4.25 inches what is the area in square inches round to the correct signi

Helen [10]

Area = l x w
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A≈ 48 in²

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3 years ago

Suppose f(x) = 2x-1 and g (x) = x + 1/a. Which value(s) of a would make the composite functions commutative? A. 0 B. 2 C. any va

Tamiku [17]

Answer:

2

Step-by-step explanation:

A commutative function means that when you insert one function in space of x in the other function, they will equal x. The equation is f(g(x)) = g(f(x)) = x

So, 2( $\frac{x+1}{a}$ ) - 1 = $\frac{(2x-1)+1}{a}$

If you multiply both sides by <em>a</em>, you get 2<em>a</em>( $\frac{x+1}{a}$ ) - a = (2x-1)+1

Simplify it 2<em>a</em>( $\frac{x+1}{a}$ ) - <em>a</em> = 2x

Add <em>a</em> to both sides 2<em>a</em>( $\frac{x+1}{a}$ ) = 2x +<em>a</em>

The two <em>a</em>s on the left cancel out 2(x+1)=2x+<em>a</em>

Distribute the 2 2x+2=2x+<em>a</em>

Then subtract 2x from both sides 2 = <em>a</em>

Therefore, <em>a</em> = 2

Hope this helps!

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3 years ago

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