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Novosadov [1.4K]
2 years ago
5

What is the area of a oblong with a base of 7cm and a height of 4 cm

Mathematics
1 answer:
mariarad [96]2 years ago
7 0

Answer: 7*4 is 28 square centimeters...

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The force of the wind blowing on a vertical surface varies jointly as the area of the surface and the square of the velocity. If
Ierofanga [76]

Answer:

a force of 1250lb is exerted

Step-by-step explanation:

since the force of the wind varies jointly as the area of the surface and the square of the velocity,

let f = force

a = area

velocity =v

from the above statement, we find out that

f \alpha a*v^2----1

that is f= k* a* v^2     -----2

where k is a coefficent of proportionality

since velocity of wind in mph,v =50

and force in lb = 20

and surface area =1/5 th ft^2

from eqn 2

we have that

20 =k*\frac{1}{5}* 50^2

making k subject of the formula

we have that

k =\frac{20}{\frac{1}{5} *50^2 } =\frac{1}{25} (lb.mph^-1.ft^-2)

that means that f =\frac{1}{25} *a *v^2  ---3

however, when velocity = 125mph

surface area =2ft^2

putting values in eqn 3 we have

f= \frac{1}{25}*2*125^2 = 1250 lb

hence a force of 1250lb is exerted

7 0
3 years ago
The graph of function g is a vertical stretch of the graph of function f ​​by a factor of 3.
Assoli18 [71]

Question says that the graph of function g is a vertical stretch of the graph of function f ​​by a factor of 3.


Now we have to find about which equation describes function g.


We know that if f(x) is the given function then a*f(x) gives vertical stretch or compress by a factor of a.

when 0<a<1 then it compresses by factor of a.

when a>1 then it stretches vertically by factor of a.


Given that function f is stretched by a factor of a so that means  we use a=3 in formula a*f(x)


Hence final answer will be g(x)=3f(x).

So choice A is correct answer.

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3 years ago
100 points to who ever can answer this the best
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a. n =17

b. n =23

c. n = 9

d. n = 15

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3 years ago
WILL GIVE BRAINLIEST The two dot plots below compare the forearm lengths of two groups of schoolchildren: Two dot plots are show
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Answer:

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Step-by-step explanation:

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3 years ago
A cylinder has a diameter of 22 cm and a height of 9 cm. Identify the volume of the cylinder.
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53 is the volume of the cylinder
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