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dem82 [27]
3 years ago
14

The altitude of an airplane is decreasing at a rate of 40 feet per second. what change in the altitude of the airplane over peri

od of 41 seconds?
A. 1,640 feet
B. 81 feet
C. -1, 640 feet
D. -81 feet
Mathematics
2 answers:
AleksAgata [21]3 years ago
8 0
C, it would be 1,640 feet lesser in elevation than it's begining point
maks197457 [2]3 years ago
7 0
The answer would be C, since the airplane is going down at a rate of 40 feet per second and the amount of time it decreased was 41 seconds, you would multiply -40 x 41 which equals to -1,640.
I hope I helped!
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the ratio of horses to chickens on a farm is 9:4. If there are a total of 169 animals, how many chickens are on the farm?
Evgesh-ka [11]

Answer:

<h2> 52 chickens</h2>

Step-by-step explanation:

Step one:'

given

we are told that the total number of animals is 169

the ratio of horses to chickens= 9:4

total ratio= 13

Required:

number of chickens

Applying part to all principle, let the number of chickens be x

4/13=x/169

cross multiply

4*169=13*x

divide both sides by 13

x=4*169/13

x=676/13

x=52

There are 52 chickens

6 0
3 years ago
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Leokris [45]

<em>Independent variables are variables of a quantity that are not affected by any conditions. </em>

<em>Dependent variables are variables  of a quantity that change if conditions relative to that variable changes.</em>

For example, we generally we take x as independent variable by x variable and dependent variable by y variable.

To find the rate of change we get two values of independent variable (x's) and two values of dependent variables (y's) to get two coordinates in form of

(x,1,y1) and (x2,y2).

<h3>And we can find the rate of change by applying slope formula</h3>

m= \frac{y_2-y_1}{x_2-x_1}.

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