Help me please....................

each blade on a windmill is in the shape of a triangle with a base of 7 feet and a height of 4 ft if there are four blades on th

Sunny_sXe [5.5K]

The total area of the blades is the area of a triangle multiplied by 4.

We have then:

$A = (4) * (1/2) * (b) * (h)$

Where,

b: base of the blades

h: height of the blades

Substituting values we have:

$A = (4) * (1/2) * (7) * (4)$

Doing the calculation we have that the area of the blades is given by:

$A = 56 feet ^ 2$

Answer:

The total area of the blades is:

$A = 56 feet ^ 2$

6 0

3 years ago

Read 2 more answers

Michael recorded the color of each car that passed by his office. He saw 30 blue cars and 40 green cars. What is the experimenta

Eddi Din [679]

Answer:

3/7

Step-by-step explanation:

4 0

4 years ago

The minute hand of a clock is 8 inches long. How far does the tip of the minute hand move in 30 minutes? How far does it move in

Brrunno [24]

Answer:

In 30 minutes:

The minute hand moves a distance of 25.13 inches

In 20 minutes:

The minute hand moves a distance of 16.76 inches

Step-by-step explanation:

When 60 minutes are completed, the minute hand of the relog makes a complete revolution. The distance s that the minute hand travels when making a complete revolution is:

$s = 2\pi r$ Where r is the radius of the circumference, and in this case, the radius of the minute hand.

So:

$s = 16 \pi$

s = 50.27 inches.

In 30 minutes (which is half of 60) the minute hand covers only half a revolution. Then the distance traveled in 30 minutes is $\frac{1}{2}(s) = 25.13$ inches

In 20 minutes (which is one third of 60) the minute hand only travels a third of a complete revolution. Then the distance traveled in 20 minutes is $\frac{1}{3}(s) = 16.76$ inches

3 0

3 years ago

Using first principal find the gradient of the curve whose equation is y=x^5. show working pleas

Keith_Richards [23]

Answer:

The gradient of $y = x^{5}$ is $\frac{dy}{dx} = 5\cdot x^{4}$ .

Step-by-step explanation:

Geometrically speaking, the gradient of a curve is the slope of the tangent line at a given point of the curve. From perspective of Differential Calculus, the gradient is the first derivative of the curve. Let $y = x^{5}$ , then the gradient of the curve is:

$\frac{dy}{dx} = 5\cdot x^{4}$ (1)

The gradient of $y = x^{5}$ is $\frac{dy}{dx} = 5\cdot x^{4}$ .

6 0

3 years ago

A = h(a+b) / 2 = , solve for h

Tema [17]

Answer:

Step-by-step explanation:

Explanation:

First, multiply each side of the equation by

2

to eliminate the fraction while keeping the equation balanced:

2

×

A

=

2

×

h

2

(

a

+

b

)

2

A

=

2

×

h

2

(

a

+

b

)

2

A

=

h

(

a

+

b

)

Now, divide each side of the equation by

a

+

b

to solve for

h

while keeping the equation balanced:

2

A

a

+

b

=

h

(

a

+

b

)

a

+

b

2

A

a

+

b

=

h

(

a

+

b

)

a

+

b

2

A

a

+

b

=

h

=

2

A

a

+

b

8 0

3 years ago